Origin algae floating cork, fishing boats, transported passivily
Transcrição
Origin algae floating cork, fishing boats, transported passivily
The Algae transported and washed ashore on on drifting objects the Netherlands coast by W. J.A. Lucas (Leiden). 3. (Issued IV. 1950) Introduction. Little the to T. L. D. attention Vrijdag H. Buse to pay that by Bat. the first investigators, The indebted which, Dr S. J. and Bisschop The greater part being, of and charge Leiden, the of Fauna” en Fauna”) Stock (Scheveningen). Rijksherbarium, Flora last and by well Zijnen, collections of the few has years most ter for of it A. Mulder belongs the in to for is, Bestudering on preserved the and furthermore material (“Committee temporarily as Vrijdag (Amsterdam), “Comité author is help, Vereniging’, This but Fl. these on Botanische present author, J. Helder), Leenhouts the the the The kind the the were especially Prodromus occur. in present ago and 1845), ± chapter a her Ncderlandse by the collected material, during together in observations for transported century collected, contains Koster completely collected under the put Flora The Swennen (Den P. mentioned new Th. a 1840—1847) ± material (1923) ‘Koninklijke brought Nederlandse Mariene Marine almost the material, collection few only algae, Scheveningen, The is Goor Josephine is and been Van the About Zandvoort, subject. Ooststroom. Buse and (Haarlem) Dr v. by K. especially of however, to ‘Rijksherbarium’ Leiden. two this to now objects. (near Zee and aan (1853). in time Bisschop to book till drifting attention much the paid on and G. Zijnen algae, to been coast (between Wijk first as has Netherlands the van de Netherlands’ “Het Filiaal”, Leiden. Origin The French detached fishing importance is Carruthers S.W. of through to (1925) Ireland. know has the The which place of they the smaller and flow the junction to the and to the the depends so branch Dover; the South and German on the that direction Gulf stream of of hunches passivily, southern Strait bends on material. floating occurrence found that The the Channel the transported are Scotland and the Faroes, after and algae boats, the of a large the sea the one of of the the 011 first currents. branches, North Sea flows around the southern and direction used as matter into two reaches joins Bight of splits cork, Danish wind, branch, Coast. and is BLUMEA 528 situated during the Frisian near gales southern ashore, from especially (1946 —1947) it and umbilicalis, Balanus tintinnabulum Apseudes According southern clonium ovale, Grateloupia southern sidered and of In Van detached the be Even have now a the for for 1. 1844 detached specimen a of This coast. on 3. a in the all species, A Ag. pedicellata, the on it possibility that Cirripcde material has comes certainly it is the English the Channel: this In on is species been 1948 of a tetra- The good transported over Hellevoetsluis. grown coast, has species number great to doubtful. in not been this in sarniensis, Zandvoort. a has con- occur for of at near be can not the material occur have even the This other showing might do Also whether ashore that it the objects. specimen beach suggests, that ovale. Channel. probably washed con- obtusa with agrees which which mentioned not regions, be Malletia This Channel, drifting for from originate Antithamnionella as the natans. hillebran- certainty molluscs algae, question, natans, but hillebrandii near adventitious to same the piece of cork, characteristic was for that the above-mentioned Also the animals, the Channel. object clavatum which drifted Falkenb. (Born.) it material, Netherlands floating Gastroclonium sarniensis, from the from (Ag.) the suggests less or found than ashore Falkenbergia '2. consider specimen the some on nlore Gastro- Brouwer. Gastroclonium common Dasya and is of are the a Netherlands native of the coasts. practically more this distance, great Channel on washed was condition and very three of of (Iso- (Polychaeta). elegans), also plumiosa. and Trivia perforat us, and Sargassum with more Gibbula bidentata algae (D. Holt- of picta, harrasii reptans the B. are Falkenbergia can e.g. Channel, Himanthalia, 011 origin, Brouwer J. Balanus Naesa following specimens and pullus the Acrosorium origin the pedicellata Dasya spores, of southern more Tricolia Eunice alga Ptilota of more washed apertura, (Bryozoa), and Bloklander Sargassum following still found in to Diodora Padina pavonia frequency distance greater assumed but is perforatum We from of hillebrandii Falkenbergia the place great north state Balanus this cases from and found several Dasya pedicellata few northern and Goor and Only more montagui most cluded of being as Astarte views regions. ashore of are Bloklander and L. (Cirripedia), (1923) filicina, clavatum Gastroclonium dii, more be Bloklander Antithamnionella sarniensis, algae them can animals aurea, biaperta pectinata Goor of North M. exasperatus, Cystoseira fibrosa, Furthermore the 11. (Tanaidaceae) Van to origin: B. Paphia Lepas talpa the washed mostly are that most transported Stephanosella , poda), algae islands. the magna, 1950 2, communications of among Lutraria (Mollusca), the probable A. by Cantharidus origin: monacha Frisian from oral that is No. VI, material from investigations appears southern it also the on As islands. S.W., origin, though From, the huis the VOL. as coast. with Channel; ashore on the that Moreover the Ardiss. Gastroclonium this As probable Antithamnionella (Roth) overgrown the is This the from this it same day, its occurs origin has species is been sarniensis. species species originates species was found Antithamnionella may from be the indicate concluded, Channel. an origin J. A. W. found attached The and Katwjjk. and the South The has (1937) IJzerman were LUCAS: which of origin of transported wei-e these rocks of pieces •washed rock, ashore to be proved etc. drifting objects, on studied the small and Coast algae 529 which to between algae Zandvoort the coast of Normandy England. Substratum. Often such washed are ashore, nodosum ceranoides L.; Fucus Fucus L. algae Ascophyllum as: Himanthalia in rich those Saccorhiza (L.) epiphytes; Borg. as (e.g. of French Also beams). cinders, are inner eggs, substratum rich board on there of formed boats, smaller on objects of capsules egg shells is fishing Sepia, After good even these and when in often they their This be can fertile, occurs normal ashore the on number blowing 19—21 much from de have la Sar- Pyl.; are very found been S.W. well as is an from as on e. the g. of the fact quickly algae greater be can as in are of pieces wood transported, of clumps as Buccinum material the of a is small very size. a very that most striking, than periods in mostly is alive. It Fructification mentioned is for the transport. two or months, were fifth of Noordwjjk. dike source, at as Den the of 21th from a the After Ilelder. results in washed smaller detached the 21th On were but probably from derived algae August. on be may 1918 number, great a They the as September October of All a of and November this the by gale material study of the fauna. more the cork, material washed ashore was same interesting transported October the on on the algae other 19—21 South cast was hails the of floating and skates, Zuid-Holland in the bunches also still are at Noord-Holland. especially material It while of one On September material probably flora of coast that on Himanthalia are Lamina- Lamour.; habitat. estimated at observation. following gale vesiculosus Himanthalia species by the ashore, Duration of tbe of and rays apparently are sometimes plants plants drifted been having condition, plants, the Lamour.; etc. Condition of of (L.) (Huds.) stipes different 71 as many digitata bulbosa the Especially Fucus spiralis L.; seaweeds, (L.) Halidrys siliquosa (L.) Lyngb.; Laminaria Lyngb.; Lamour.; filum parts. Another use (L.) natans gassum (L.) lorea saccharina vesiculosus L.; brown large on Chorda Jol.; serratus L.; Fucus Fucus serratus L. X Fucus ria epiphytic Le (L.) were part of that the than bunches the mainly -washed the cork, of drifting beams, cork, algae. ashore etc. the On south were beams, the of found etc. 24th of Noordwijk, north of Noordwijk. Egg capsules or two weeks of after rays the and algae. skates are washed ashore usually about one BLUMEA 530 List list This with To the the of 2, 1950 drifted ashore. species names from No. VI, 171 65 species; Netherlands of them these coasts; have not been have been marked asterisk. an (Van the contains recorded previously of VOL. the material Goor) The which phorophyta has has (Prodr.) or substrata or been not been studied the by author, either added. mentioned are far as these as data were available. CYANOPHYCEAE. Calothrix Lucas confervicola *Hydrocoleum Lucas No d wij k or erh ou t N o o r dw i - 20-9-1948, jk, lyngbyaceum Kiitz. Kijkduin-Terheideii, — 21-11-1948, 188, Himanthalia lorea. Lyngbya bunch :: — Ag. Chorda filum. 127, of semiplena 'Oscillatoria Lucas Ag. Noordwijk-Katwyk, — 15-11-1949, Lucas 494, cork. Thwaites nigro-viridia Scheveningen, — 30-11-1947, Himanthalia lorea. 279, *Oscillatoria 1947, Lucas Lucas 332, planctonica "VVolonszynska 325, Himanthalia lorea; 14-12- Noordwijk-Katwijk, — Katwijk-Wassenaarse Slag, 10-12-1947, Laomedea geniculata. CHLOROPHYCEAE. Bryopsis plumosa Sehcveningen, (Huds.) Cladophora 11-1948, Lucas arcta 246, Katwijk, 11-3-1949, Cladophora Hartog, :S 5- Harv. Zandvoort, — Lucas 5-11-1948, 145, 1-1852, Buse, Himanthalia lorea; cork. fracta (Dillw.) lanosa (Roth) Kiitz. — Den Helder, 3-1-1950, C. den Kütz. Seheveningen, — Vrijdag Zijnen, vesiculosus. Cladophora 5-11-1948, egg Ascophyllum 147, (Roth) Kiitz. Himanthalia lorea. refracta — Kiitz. (Roth) Noordwijkerhout-Noordwijk, Scheveningen, — 23-12-1947, cork. 160, Cladophora 89, prolifera Lucas Cladophora Tjeenhouts Lucas Noordwijkerhout-Noordwijk, — — wood. Cladophora Fucus Lamour. lorea. lorea. (Griff.) Noordwijkerhout-Noordwijk, hypnoides Himanthalia Kiitz. (Dillw.) B. Syn. — 275, Himanthalia flexuosa Cladophora Ag. Lucas 30-11-1947, rupestris capsule nodosum; of (L.) Raja ibid., Kiitz. — clavata; 13-11-1949, Zandvoort-Katwijk, Noordwijk, Lucas 455, 12-12-1948, egg 11-3-1949, Lucas capsule of 149, Raja Lucas of clavata ; Noordwijk-Katwijk, 15-11-1949, egg-capsule Raja 521, clavata ; Kijkduin-Terheiden, 21-11-1948, Lucas 70 and Lucas 213, Himanthalia lorea. Codium fragile tomentosoides :: van (Sur.) Goor — 'Codium tomentosum Hariot In — Syn. C. mucronatum J. Ag. var. bunches. (Iluds.) Stackh. — Noordwijkerhout-Noordwijk, J. A. W. LUCÜS 10-10-1948, LTICAS: The algae 152, Himanthalia lorea; *Endoderma Lucas viride Griffithsia 453, (Reinke) cf. etc. 531 Lucas 30-11-1947, Scheveningen, clathrata Enteromorpha bunch Scheveningen, cork; (this ; Sepia and species?) J. (Roth) 31 of Lagerh. Noordwjjk, — 13-11-1949, barbata. 24-10-1948, Lucas Lucas Ag. 13-10-1946, Scheveningen, Noordwijkerhout-Noorclwijk, — wood; 212, Katwijk, 15-10-1938, Leenkouts, Roster 19-10-1941, Lacourt, nodo- Ascophyllum shell inner 655, oi' officinalis. Enteromorpha 16, bunch daal, of compressa cork; vesiculosus; nodosum-, ibid., cork; ibid., erecta Enteromorpha Lucas 170, Himanthalia 37, Scheveningen, 18-10-1947, linza Enteromorpha J. 13-10- cork; Scheveningen, 16-11-1947, wood; Ag. ibid., Lucas bunch 298, Lucas 22-9-1948, 242, Noordwijkerhout-Noordwijk, — J. (Wulf.) Ag. Zandvoort, — Lucas 24-10-1948, 18-12-1949, 171, wood; egg of capsule Wijk — Lucas 24-11-1948, Lucas 219, cork; Zee, bunch XII-1841, of Buse, Scheve- cork; cork. -J. Ag. Noordwijkerhout-Noorchvijk, — J. (Mull.) Raja 22-9-1948, Ag. — Lucas wood. 208, 4-3-1949. Zandvoort, clavata. Scheveningen, — aan 492, Scheveningen, prolifera Monostroma spec. Ag. Helder, 24-1(1-1948, wood. 133, 15-11-1949, marginata *Enteromorpha 1, J. (L.) Den — Noordwijk, Leenhouts Creutzberg, 22-10-1941, *Enteromorpha Link (L.) lorea; Nooixhvijk-Katwijk, Mulder 213, (Lyngb.) intestinalis Enteromorpha Swennen ningen, of ibid., Buse, Ascophyllum box. 2, stone; 502, bunch 324, wood. flexuosa 'Enteromorpha Stock Lucas Mulder Bloemen- XI-1847, Zandvoort, 14-12-1947, nodosum; Leenhouts 21-9-1948, cork; 19-12-1949, Mulder 17; 19-12-1949, Ilazevoet, Lucas Ascophyllum IJmuiden, — lorea. Ilimanthailia 24-10-1948, and (1) Noordwijk-Katwijk, 15-11-1949, 3946, Leenhouts, Grev. (L.) IJmuiden-Bloemcndaal, Stock 13-11-1949, Fucus of drifting objects, on Himanthalia lorea. 272, sum transported 6-12-1947, Leenhouts 202, Fucus vesiculosus. :;:Protococcus marinus Kütz. — Katwijk, 30-10-1949, Lucas 442, Patella vulgata. *R.hizoclonum 11-1948, Lucas Rhizoclonium 18, bunch of Ulva cork; implexum riparium lactuca Urospora 18, Lyngb. — Kijkduin-Terheiden, 21- lorea. Ilarv. (Roth) — IJmuiden, 19-12-1949, Mulder cork. L. — Noordwijk-Katwijk, Lucas (Dillw.) 245, Himanthalia Noordwijkerhout-Noordwijk, penicilliformis lime-stone; Lucas 28-2-1949, ibid., (Roth) 8-5-1949, 14, Aresch. Lucas 334, 24-10-1948, Lucas 53, lime-stone. — Noordwijk, clump of 28-2-1949, Buccinum eggs. PHAEOPHYCEAE. Ascophyllum nodosum (L.) # Asperococcus Le Jol. — bullosus Lamour.— Bunches Noordwijk, are extremely X-1948, common. Rijkers, cork. BLUMEA 532 cf. *Asperococcus Lucas 24-10-1948, of Swennen 3-10-1948, Mulder 19-12-1949, and 75, box; IJmuiden, of Texel, — cork; Lucas 1948, Schouwen, bunch 69, ibid., of cork; beam; 3, ibid., ibid., Stock 13-11-1949, bunch of Lucas Leenhouts little 192, (4) 20-9- cork; ibid., 18-10-1947, ibid., cork; wood; 129, stone; Viergever, box. 27-12-1947, tuberculata *Bifurcaria 68, Bloklandcr, of Stock Bloemendaal, Scheveningen, Lucas 16-11-1947, bunch 26-8-1948, Hazevoet, cork; Noordwijk, 4-8-1946, Rijkers, wood; 7-10-1946, Swennen 85, 27-8-1948, bunch 19, Noordwijkerhout-Noordwijk, — Grew (Mert.) Holder, 1950 2, stone. porous echinatus Den cork; No. VI, Griff. compressus 224, Asperococcus bunch VOL. Stackh. (Kiitz.) Kijkduin-Terlieiden, — 1-10- " Himanthalia Bloklandcr, plumosa *Chaetopteris N oordwi.j kerho Lucas 525, Cladostephus Lucas Lucas 1949, Lucas 15-11- are ibid. 336, more less or common. 11- Zandvoort-Noordwijk, — Noordwij clavata-, 15-11- k-Katwijk, ibid. sinuosa Derb. (Roth) et Sol. — ; detached. Only Terschel- Noordwijk; Katwijk; Tcr- Holland. van Cystoseira discors Cystoseira ericoides Cystoseira fibrosa egg Raja clavata; Noordwjjk-Katwijk, Goor); Bloemendaal ; Noordwijkerhout (van heiden-IIoek an of Ag. Zeewering- of capsules ibid.; Bunches — Ilondsbosse — egg 3-3-1949, (Light-f.) capsule egg 523, Colpomenia ling' Larnour. (L.) 2, 44, Scheveningen, spongiosus 43, Kütz. Mulder Lucas 11-3-1949, ibid.; Chorda filum 3-1949, (Lyngb.) 16/20-4-1949, ut, Zandvoort-Katwijk, 1949, lorea. Raj 1948, of capsule J. (L.) (L.) Ag. J. (Iluds.) Raja Ag. clavata, Otice — Ag. bunch a Once — Bunches — (Prodr.). bunch a Kijkduin-Hock (Prodr.). fairly are van rare. Holland, Once on 19-10-1946, Bloklandcr. Desmarestia aculeata *Dictyopteris Mulder bunch 20, Dictyota Lucas 1949, of bunch (Huds.) of Lamour. Lo (Roth) Mulder 21, bunch of cork; Bloemendaal, cork; Zandvoort, Lucas 24-10-1948, Katwijk, Ectocarpus bunch fasciculatus of Ectocarpus 210, Kijkduin, cork; wood; 271, cock fascia. j Stock (this '20-11-1949. 19-12-1949, 15-11- 467, -Tol. — IJrauiden, 19-12-1929, 13-11-1949, Stock (5) and Hazevoet, box; 7, bunch of Noordwykerhout-Noordwyk, Lucas cork; 296, wood; Noordwyk- 23-12-1947, Scheveningen, c.l (Griff.-) (Engl. — 31-10-1948, Bot.) 6, box; species?) Levis, Harv. Ag. — Texel, 7-10-1946, Zandvoort, 1-1844, Noordwijkerhout-Noordwijk, Noordwijk, 8-5-1949, Blok- wood. Mennema, Lucas Buse; 24-10-1948, 304, beam; beam. hincksiae Harv. — Zandvoort-Noordwijk, 25-1-1948, cork. Ectocarpus of (Prodr.). IJmuiden, Noordwijk-Katwijk, — 20-1-1949, Hellevoetsluis, granulosus '*Ectocarpus Lucas wood; ibid., Lucas Zandvoort, 18-12-1949, Lucas — cork. Leenhouts, lander, Stock 18-12-1949, 211, 15-11-1949, Batt. cork. confervoides Ectocarpus Scheveningen — (Stackli.) cork. dichotoma 499, Lamour. (L.) membranacea irregularis perhaps at Kütz. — Seheveningen, Texel, 7-10-1946, 18-10-1947, Bloklandcr, Leenhouts 128, bunch Phyllitis A. J. AY. Ectocarpus Mulder 22, lander, bunch (det. identified of cork; species?) Kijkduin-Hoek Ag. etc. 533 19-12-1949, IJmuiden, Holland, van 1843, Scheveningen, — For of want sandrianus 209,, Blok- 19-10-1946, Bisschop, Polysiphonia the material sporangia be not can Zanard. tomentosus (Duds.) vesiculosus; Schcveningen, 24- Noordwijkerhout-Noordwijk, — stone. porous Fucus Vrijdag virescens *Ectocarpus Lyngb. Noordwijk, Zijnen, Thur. Terschelling, — Lucas 20-9-1948, -T Ascophyllum bunch —-, of nodosum. Noordwijk-Katwijk, — 11-8-1949, 165, , 15-11-1949, Lucas cork. 464, Elachista Lucas 357, fucicola ningen, and e. 293, 1843, g. Bondam, (Velley) vesiculosus; Fucm and Lucas 166 (this — drifting objects, on certainty. Ectocarpus 353, Mont, cork; rufus with algae transported cork. Ectocarpus Lucas of Kiitzing). Lucas 10-1948," The paradoxus bunch Ectocarpus lanosa LTJCAS: Vrijdag Zijnen, ibid.; ibid., 30-12-1946, Elachista scutulata wijkerhout-Noordwjjk, wijkerhout, ibid., "Eudesme 234, virescens Bosch, 431, Bisschop, Fucus Leenhouts, Düby (Sm.) Lucas 20-9-1948, der van Lucas Scheve- ibid.; Capelle vesiculosus; Hoek ibid. Lucas, Itijkers, K'oster 6-9-1938, den van 20-9-1948,. 4-8-1946, 24-10-1949, 4-10-1946, 12-8-1949. Terschelling, — Noordwijkerhout-Noordwijk, ibid.; Noordwijk, Holland, van A resell. Den — Lucas ibid.; ibid.; J. Goor) „ Noord- ; Nf>or,n- lorea; Vrijdag 21-9-1948, Ajr. (van Himanthalia Scheveningen, . , ibid., (Carm.) Helder 167, Zijnen, „ „ ibid.; , Leenhonts, Nooi-dwiikerhout-Noordvviik. — ~ 24-10-1948, Lucas and 128 Lucas 222, wood, Fucus fairly rare. on vesiculosus and a feather. Fucus ceranoides Fucus serratus floating L. L. spiralis Fucus vesiculosus objects L. L. L. ~ Halidrys Bosch, 535, e. not are g. less or Fucus so are Noordwijk, Often common. on sometimes rare, Lucas 8-5-194-9, vesiculosus — L common. Sometimes common. very on 321. Noor dwnk-Katwijk bunches. (L.) Lyngb. velutinum (Grcv.) — Bunches J. A»\ — are more or Zandkreek, less 1852, common. van den Himanthalia lorea. Himanthalia lorea an m-ore - 2 siliquosa Herponema are are Bunches — X - Lucas Bunches — beams, as serratus Fucus 6-12-1949, Bunches nodosum. Ascophyllum Fucus Boating Bunches — — (L.) Laminaria digitata Laminaria saccharina iron buoy at Laminaria (L.) Lyngb. — — Lamour. (L.) Noordwijkerhout, spec. — Lamour. Bunches are Bunches — 4-8-1946, common. are Bunches rare. are rare. Once on Rijkers. Noordwijkerhout-Noordwijk, 10-10-1948, Lucas 232, Jlinianthalia lorea. :;: Mesogloia Swenncn beam; 74, vermiculata box; Scheven ingen, Padina pavonia Pelvetia Phyllitis (Engl. Wassenaarse 17-9-1941, (L.) canaliculata fascia (Miill.) lm Creutzberg, Lamour. (L.) Hot.) Jol. — Slag-Scheveningen, — Decne Kütz. — Melder, Himanthalia Scheveningen et Don 23-10-1947, Thur. Katwijk, — 3-10-1948. Lucas 237, lorea. (Prodr.). Once 9-2-1946, a bunch Rijkers, (Prodr.). light-buoy BLUMEA 534 N. F. Scheveningen 4; Lucas 228, beam; Lucas 227, cork; ningcn, 16-9-1941, 132, beam; Kjellm. ibid., Lucas 17, Katwijk-SchevcVrijdag Ascophyllum Zijnen, Leenhouts 18-10-1947, ibid., Schouwen, ; 22-9-1948, 28-2-1949, cork; Scheveningen, 165, vesiculosus 16-11-1947, ibid., box. 158, lanosa; Leenhouts Fucus 243, Laminaria; Polysiphonia 23-12-1947, Lucas Lucas ibid., cork; 164, Noordwijk, — 11-3-1949, Creutzberg, nodosum and Ascophyllum 22-9-1948, (L.) beam; 132, Viergever, 27-12-1947, Katwijk, vesiculosus; 1&50 2, Leenhouts 23-12-1947, Schouwen, No. VI, L&erihouts 18-10-1947, ibid., littoralis Pilayella Fucus VOL. nodosum; 18-8-1941, ibid., Viergever, Himanthalia lorea. Punctaria Saccorhiza onco natans Sarg'assum Vrijdag 11-12-1949, Viergever, wood. Zijnen, 7-9-1941, Scheveningen, — bunch of cork. (L.) Borg. Once — a J. (Lyngb.) bunch Ag. Scheveningen. at Noordwijk, — 24-10-1948, wood. 96, cirrhosa Sphacellaria Lucas 20-9-1948, thalia Noordwijkerhoiit-Noordwijk, Schouwen. lomentarius Scytosiphon Lucas at Pyl. la cork; Schouwen, of bunch a de (Huds.) — Scheveningen, stone; porous bulbosa bunch Creutzberg, Also 207, Grev. (Roth) plantaginea Lucas 24-10-1948, 127, pilum Noordwi.jk-Katwijk, lorea-, J. (Roth) Chorda As. — ibid., ; 28-2-1949, Noordwijkerhout-Noordwijk, Lucas 10-10-1948, Lucas Iliman- 189, 16, lime-stone. RHODOPHYCEAE. Acrosorium bunch of cork; Ilimanthalia lia Acrosorium Swennen 23, lorea; Lucas 1948, thalia lorea; 1948; Lucas Lucas uncinatum lorea-, 265, van 18-10-1941, Ilimanthalia Lucas IJmuiden, cruciatum 19-12-1949, Lucas Noordwpk-Katwijk, Scheveningen, venzande, 7-11-1949, 14-11-1948, 6-12-1949, Lucas Mulder Iliman- 542, Lucas Rijkers, 10-10- 536, ibid., Scheveningen, ; Iliman- Ilimanthalia 527, 36, Ilimanthalia lorea; lorea; 16-11- 30-11-1947, 21-11-1948, 14-11-1948, Lucas 35, Bloklander, stone; Ilimanthalia lorea; Schouwen, Nag. Katwijk-Scheveningen, — lorea, Thur. — ibid., 26-11-1948, cork; 24, bunch ibid., Lucas 385, Bloklander, 24-11-1948, lorea. (Ag.) 5-11-1949, 48, Ilimantha- 19-12-1949, 5-10-1948, Kijkduin-Terheiden, Lucas 388, Helder, 28-12-1949, Gravenzande, Mulder Lucas Lucas Bloklander, Swennen Noordwi.jkcrhout-Noordwijk, ; Lucas (Ellis) 55, and 13 Den — Noordwijk, Ilimanthalia plumula 20-9-1948, Kylin liuse Ilimanthalia Ilimanthalia lorea; 12, Noordwijk, cork; 18-12-1949, 54, Antithamnion lorea; Terheiden-'s Viergever, 7-11-1948, Ilimanthalia lorea 33, 7-10-1946, IJmuiden-Blocmendaal, 1-1844, 7-11-1948, Texcl, Swennen IJmuiden-Zandvoortf, 32 and Lucas Holland, — Ilimanthalia lorea. 32, Ag.) Noordwijk-Katwijk, Antithamnion 16-11-1948, lorea; (J. Ilimanthalia lorea; Ilimanthalia. lore/a; Swennen Lucas 16-11-1948, Zandvoort, 34, Kylin 24-11-1948, Katwijk-Scheveningen, ; Katwijk-Scheveningen, Hoek (Crouan) Helder, 14, Ilimanthalia lorea-, Ilimanthalia thalia Den lorea ibid., lorea-, reptans Den den of Ilelder, Ilartog, cork; 20-1-1949, Ilimanthalia lorea Ilimanthalia lorea, Noordwijkerhout- Lucas 516, Halidrys 24-11-1948, Ilimanthalia 92, bunch siliquosa; ; of Katwijk- Terheiden-'s Gra- J. A. W. LUCAS: The algae Antithamnionella sarniensis at Den Helder ( Swennen between everywhere cork; collectors 273, 295, Stock 329, (8, 9), 462, of Antithamnionella Cellulis axis ramulis latis; Type: cork All unilateraliter ramosis Lucas Bangia Mulder Raja fusco-purpurea 25, bunch clavata; buncli of bunch 485, (this cork; of Schouwen; 50, 51, of 53, 52, of species J. crassa Lucas, nov. var. 140 ad latis, longitudinis /n raris. bunch, 55, J. (Turn.) of of and 57, cork. same bunch of cork. Noordwijk-Ivatwijk, — Lyngb. Zandvoort, species?) Ag. cork. (Dillw.) cork; of Found bunch tetraspores. ruscifolium Apoglossum var. %—U/4 Mulder 56 19-12-1949, (45, number great a 6, Holland; van 535 vulgata. Midder 19-12-1949, with specimens 15-11-1949, Lyle crassis, IJmuiden, on and Patella principalis Mulder Lucas Viergever, Found sarniensis Hoek etc. species. common very 19-12-1949, and Zandvoort drifting objects, on A IJmuiden, 529). Cotypes: IJmuiden, — Lyle Bloklander, 481, cork, bunches algae, 18), transported IJmuiden — Mulder 4-3-1949, Noordwijk-Katwijk, Kijkduin-Terheiden, 3, capsule Lucas 15-11-1949, Lucas 21-11-1948, 19-12-1949, egg 70, of 495, Ascophyllum nodosum. Bostrychia scorpioides Lucas 5-11-1948, ciliata *Calliblepharis Swennen 17, (Gmel.) Himanthalia 73, (Huds.) Himanthalia lorea; 7-12-1947. Lucas 253, Patella Lucas Patella 74, Callithamnion ibid., 508, IlimanthaKa of corymbosum lorea; lorea; 24-11-1948, Slag, 10-12-1947, (Sm.) lorea-, Noordwij k-Katwij k, — Lyngb. — (this species?) 91, bunch of cork; „ (this species?) Scheveningen, 15-11-1949, 15-11 Helder, -1948,, Lucas Lucas Lucas Leenhouts 76, bunch 474, —Fucus 284, 141, ibid.; 75, Lucas 10-10-1948, , 13-10-1946, 24-11-1948, XII-1841, Buse, 5-11-1948, 30-11-1947, 0 Den Zandvoort, ibid., -u-, Slag-Scheveningen, — tus; Helder, Noordwijkcrhout-Noordwijk, cork. Noordwijk-Katwijk, Wassenaarse cork; Den — Noordwijkerhout-Noordwijk, Lucas 20-1-1949, Arn. bunch Ilimanthalia Himanthalia Kiitz. (this species'?) vulgata; Katwijk-Wassenaarsc byssoides 475, 507 and Swennen 23, Noordwijkerhout-Noordwijk, — vulgata. Callithamnion Lucas Mont. lorea. of serra- Ilimanthalia lorea. * Callithamnion fruticulosum J. Ag. Scheveningen, — 30-10-1949, Lems. "Callithamnion 15-11-1949, Lucas granulatum 473 and Callithamnion hookeri everywhere of cork. Once Callithamnion 37G, beam; on Halidrys roseum Helder, Busc, Mulder 26, bunch of cork; — 529) ; Harv. (Wither) lorea On Noordwijk-Katwijk, — Ilimanthalia. lor&a frequent {Buse, Rijkers, Schouwen, — Lucas 118, Viergever, 23-10-1948, Terschelling, 26-11-1949, Swennen Himanthalia 1-1844, Ag. Ag. cork. siliquosa. (Roth) tetragonum 24-11-1948, of Scheveningen 528 and Zandvoort-Noordwijk, Callithamnion Den (Dillw.) between Zandvoort and 119, 120, 121, 320, 327, 375, bunch (Ducluz.) bunch 501, 26, and everywhere Ag. Stock — A Himanthalia Fucus spec.; between 15-8-1949, 10. very lorea-, common Wijk IJmniden, Zandvoort and species. aan Zee, 19-12-1949, Hoek van BLUMEA 536 Holland VOL. (lime, Bijkers, Lacourt, No. VI, 2, 1950 Lucas Bloklander, 123, 124, 223, 241, 255, 278, 389, 457 and 530), Himanthalia lorea, Fucus platycarpus, yever, bunch Callithamnion Schonwcn, Vier- 23-10-1948, 11 Ag. /? brachiatum (Bonn.) (Wither) tetragonum bnneh Mulder 27, 19-12-1949, Stack 26-11-1949, of cork; 126, 203, cork. of IJmuiden, -— Corallina officinalis, 125, Halydris siliquosa, cork; .T. Ag. Zandvoort-Noordwijk, Lucas 15-11-1949, Noordwijk-Katwijk, ■ of bunch 491, cork. *Callithamnion Lucas 25-1-1948, found. Already belongs to C. In Van Goor found In the species tripinnatum (Grat.) only paper the to Species Ceramium Ducluz. this Ag. Zandvoort-Noorrlwijk, — identification material of is to be Schcveningen Zandvoort, — Ascophyllum 312, with 1-1844, Buse; Sehp,ve- nodosum; and the on C. Carm. (Ellis) is same those of C. B) Species 1) Ceramium Ceramium good for species, the on is It made about the sometimes outer side also without number great a and of those of ""Cera- Ag. and the Ceramium with parts of (Ellis) ciliatum .T. doubtful whether Material from Den Ilelder has but node whorls only are nodes, characteristic intermediate nodes, acanthonotum. C. spines. Chauv. deslongchampsii strictum diaphanum Ceramium Dueluz., Ceramium echionotum spines ciliatum Gongroceras Syn.: be will Ceramium Iioth. found. were a plant. acanthonotum, between # Harv., with parts remarks genus spines. ciliatum flabelligerum J. Ag. spines few a difficult f. acanthonotum acanthonotum for that Lucas 14-12-1947, present belonging A) found Ag. wrong a Bisschop. ilingen, of Prodr. tripinnatum. Noordwi.jk-Katwjjk, mium (Dillw.) cork. Callithamnion ::; tetricum cf. 264, Ceramium strictum Kiitz.; (Light!) Roth twice found strictum var. Harv.; (Kiitz.) Feldmann- (Kiitz.) Mazoyer. This The it is a species Ceramium a) C. C. The not which name C. must the specimens. Harv., which is strictum made Harvey based a on Kiitz.; new the com- species has typicum var. Roth to not been yet f. strictoides of C. Petersen. II. objects. identified were form a as diaphanum drifting on thusfar he Roth. Roth (Lightf.) as C. diaphanum sMcturn (Light!) Harv. (Kiitz.) Roth. There- indicated above. (Light!) ~ In Gongroceras objects. rare Roth f. tenuissimum Lyngb. ' Syn.: Gongroceras "Original drifting objects. Chauv. (Light!) (Light!) opinion belong fore the c) algae on type of Kiitz. drifting is (Kiitz.) diaphanum diaphanum form the deslongchampsii diaphanum from This my C. strictum 2) recorded in of study to Ceramium striatum Gongroceras b) able was synonym bination, only was author herbarium v. tenuissimum of Lyngbye" Kiitzing in These specimens Kiitz. at Leiden Kiitzing's do not show a label, handwriting, gland cells, on which belongs while also is written to the a • few apices J. A. only are According <7. C. applies C. C. it is of C. tenuissimum this This Roth (Lightf.) is f. H. been not intermediate forms H. cateniforme Hormoceras Syn.: The cells. are lowest cateniforme of part However, the in objects. Lucas, the Rijks- Kiitz. of type The has is C. e) In the be to form this form, that preserved Roth. belongs to form C. Kylin which and must be from 4) A to the separate a of as with Chantransia Stock and (12) daviesii f. cork; Scheveningcn Chantransia (Kylin) in objects, form of I Sjostedt, connection diaphanum with tenuissimum Iiyngb.; in from C. the one other corti- material Tabulae Kützing's with agree C. is not identical differs type, speci- Phvco- specimens, Ceramium and rubrum (Huds.) Ag. too. belonging Thur. (Dillw.) cork; , Roth. Ceramium, , to could not be yet. as Ilazevoet there cateni- species. specimens, certainty rest (Lightf.) and (d), a u identified the greater part of Kiitzing's figure Kylin objects For corticating Hormoceras diaphanum drifting on Roth with the corticatulum Kylin The (Lightf.) drifting number occurs considered the belongs f. tenuicorne Kiitz. *Ceramium rescissum 3) known Roth. supposed. agrees C. mentioned remark also Gongroceras as of Roth. at of objects. corticatulum diaphanum C. however, and possibly above corticated. (Lightf.) form a (Lightf.) the the as drifting on consider catulum Kylin, are rare completely diaphanum considered not and (Lightf.) C. diaphanum fact, logicae with connection to Sjostedt men, internode is no differences no forme Bloemendaal, — Noordwijk, 20-9-1949, Lucas 13-11-1949, 56, (Prodr.). virgatula .Thur. (Harv.) Zandvoort, — ... 4-3-1949,, Mulder 19-12-1949, Mulder , ~ " Ceramium rubrum. *Chondria bunch 28, of are .1. (Tviitz.) herbarium; Leiden, shows nodes with upward proliferation i me, drifting on and Petersen by comb. nov. to difThe Petersen. found rare Ag. essential not strictoides have form The Ag. f. which is Ag. J. (Lyngb.) strictoides J. Roth Ag. opinion. diaphanum J. 537 that Ceramium impossible tenuissimum f. (Lyngb.) (Lightf.) J. not Roth etc. drifting objects, on arachnoideum (Lightf.) (Lyngb.) with transported synonym Ceramium dHaphanum accordance algae Therefore a diaphanum tenuissimum d) The is Ag. to C. between J. Kylin to ferent from LUCAS: dentate. feably orach noideum same W. of substrata, 133 131, dasyphylla cork; 011 (Woodw.) IJmuiden, — in number great a everywhere between Noordwi.jkerhout Nooi'dwijkerhout-Noordwijk, ; Ag. 20—22-IX-1948 24-10-1948, on many and Kijkduin, Lucas 132, kinds Lucas 127, Ascophyllum nodosum. *Chondria Mulder 29, lime, 134, tenuissima bunch cork, of (G. cork; W.) et Ag. IJmuiden, — Noordwijkerhout-Noordwijk, Himanthalia lorea and Ascophyllum 19-12-1949 24-10-1948, nodosum: Lucas Noordwiik- , Katwijk, 14-12-1947, Lucas 326, Himanthalia lorea ; 469, cork; ibid., 15-11-1949, Lucas 480, 16-11-1948, Lucas Chondrus Buse, 135, crispus bunch of ibid., 15-11-1949, Lucas cork; Katwjjk-Schcveningcn, Himanthalia lorea. (L.) IIimanthaUa lorea ; Staekh. — (this species?) NoordwijkerhoiU-Noordwjjk, Zandvoort, 7-12-1947, Lucas 1840, 136, BLUMEA 538 vulgata Patella Noordwijk-Katwijk, ; *Corallina 456, cf. Terschelling, of L. A Corallina rubens Corallina ; L. Ell. Cruoriella dubyi 543, 154, ibid.; Lucas filum. Scheveningen, ibid., lorea-, ibid.; XII-1843, van den lorea- Kijkduin ocellata Dasya bunch 470, Kylin Den — Lucas 24-11-1948, Helder, Rijkers, Ilimanthalia 505, bunch of Ilimanthalia Schmitz Terheiden- cork; lorea, Scheveningen, — Kütz. (ITuds.) Den — IJ m u i de n -B lo eme ibid.; 328, Terheiden, 14-11-1948, Ag. 13-10-1946, Helder, 26-11-1948, 19-12-1949, ndaal, Lucas 21-11-1948; Mulder Lucas 11-11-1948, Katwijk-Scheveningen, 161, 16-11-1948, ibid.; 160, Ter- ibid. Bloldander, 30, 31 19-12-1949, Mulder IJmuiden, — and 32, on piece a According, to did from Buse the was (Ag.) mica label, on to It present. Lucas 163, Erythropeltis Noordwijk, 24-10-1948, Viergever, on dated Ilimanthalia discigera Lucas Mulder 33, written the to of be 15-11-1949, Rijksherbarium found, Dasya, "supra on have glass however, preserved. algas", that at van Himanthalia been varias stated though no all this material 1-1844. Grev. — Noordwijkerhöut-Noordwijk, lorea. (Berthold) 194, Sehmitz Nitophyllum — Noordwijkerhout- punctatum; Schouwen, X- spec. hillebrandii Himanthalia. 19-12-1949, is of piece Goor, van (Fl. Dan.) Laomedea '-'Falkenbergia a not plants some on which is Buse; is Agardh Only and In Zandvoort. — from material. Dumontia filiformis 10-10-1948, Ag. Venice of belong Noordwijk-Katwijk, — cork. material from mentioned this Harv. (Grateloup) of pedicellata Dasya especially 31-10-1948, cork. # c.f. Scheveningen, — Noordwijkerhout-Noordwijk, arbuscula "Dasya material Ag. liloklander, Lucas 5-11-1948, 159, bunch of J. 15-11-1949, (Crouan) heiden-'s Gravenzande, den, and 546); Lucas 28-12-1949, Noordwijk, 5-10-1948, purpurascens Ilimanthalia 1942, 5 539, Noordwijkerhout-Noordwjjk, — vulgata; (Batt.) 14-11-1948, Cystoclonium # Swennen Mulder 374, 10-10-1948, Chorda 155, Sol. (Grev.) ramosa Ilartog, Ilimanthalia lorea, 355, ( Ilimanthalia lorea. Leenhouts, Goor 318, Ilimanthalia lorea. Noordwijk- Katwijk, Gravenzandc, Leiden on 24-11-1948, Holland van 312, 280, Lucas et Patella erecta Ilimanthalia *Cryptopleura Lucas Hoek IJmuiden-Zandvoort, — Swennen 13, Ilimanthalia lorea; Lucas and especially Den Helder 355-, 153, 21-9-1948, 156, *Cordylecladia Sprong, ibid.; 13-11-1949, Ilimanthalia lorea. Capelle, lorea; species, common Lucas squamata Lucas 7-12-1947, 58, Blok- VIII-1946, Noordwijk, — Noordwijkerhout-Noord wgk, Katwijk-Scheveningen, den Scheve- cork; 458, Viergever. Himanthalia lorca # Lucas Schouwen, Sol. et Lucas IJmuiden Blojilander, Rijkers, Schouwen, 's vulgata; clavata. Raja VIII-1949, between everywhere Ell. granifera capsule eg'g Corallina officinalis lorea. 35, 1950 2, Himanthalia lorea. lander, 12-, No. VI, 15-31.-1949, Patella 1-10-1948, Bloklander, ningen, Lucas VOL. Den (Born.) Falkenb. Helder, Swennen 25, bunch of — A common den Hwtog; cork; IJmuiden-Zandvoort, species; IJmui- 19-12-1949, J. Mulder A. W. LUCAS: algae Gastroclonium ovale; 34, and Noordwijkerhout Bloklander Hoek and Lucas *Gastroclonium Lucas The clavatum IX—XII, 105, 106, 104, 539 Rykers, 533. 532, Noordwijk, — between 1917—1949, 460, 468, Ardiss. (Roth) etc. 6; everywhere Mulder Holland, 103, drifting objects, on Zandvoort, van 102, transported 24-10-1948, cork. 141, Gastroclonium kaliforme Swennen 27, (G. Himanthalia lorea; 35, Ilimanthalia lorea; Zandvoort, wijk, 20-9-1948, 143, 144, 234, 10-10-1948, - Helder, 24-11-1948, Chorda Mulder 19-12-1949, Cystoseira fibrosa; Noordwi cork; 13,, 5-11-1948, jkerh out-Noord- 11-11-1948, Lucas 13, and filum - - 19-9-1946, Stock 24-10-1948, Himanthalia lorea, on Den — cork and 1-1844, Buse, 26-11-1949, Zandvoort-Noordwi.jk, Ardiss. W.) et IJmuiden-Bloemendaal, 142, cork; Scheveningen, - bunch Leenhouts, Gastroclonium ovale of cork. — Kütz: (Iluds.) A species, common especially ~~ on Himanthalia lorea. Swmnen 11-1948, Holland; 38; Schouwen, Patella 178, Goniotrichum between everywhere 18-8-1941, *Gelidium attenuatum Lucas 15-8-1949, Terschelling, Lucas Wyk Den 356; Zee aan Helder, 24Hoek and van Viergever. (Tarn.) Thur. Noordwjjk-Katwijk, 14-12-1947, — vulgata. (Chauv.) Zanard. elegans "" """ — " No o r d w i ker hout-No o d j r w ijk, " Lucas 20-9-1948, bunch 507, of nodosum; Gracilaria of by cross-section, filicina egg belongs ef. egg capsule * capsule of of barbata Halurus rubens ningen, 20-1-1949, lander, Zee Lucas Ilimanthalia The specimen, 31-10-1948, according to and the purpurascens. Ag. Noordwijk, — 13-11-1949, 15-11-1949, Lucas Lucas 524, Ag. Katwijk-Scheveningen, — 7-11-1948, Lucas 21-11-1949, 38, Ag. Katwijk-Scheveningen, — 16-11-1948, (Lightf.) Kütz. Batt. (Ellis) Zandvoort, ; Lucas 205, Den — of cork; ; 24-11-1948, Noordwi.jkerhout- ibid., 5-11-1948, Wassenaarse lorea; Himanthalia Helder, II use 1-1844, Himanthalia 533, Noordwijker hout-No ordwjj k, Himanthalia lorea; bunch 93, 270, Lucas — lorea. Lucas Slag-Scheve- Scheveningcn-Hoek lorea; Kijkduin, van 18-12-1949, nodosum. Hypoglossum aan J. Lucas Lucas 18-12-1949, Ascophyllum Wijk 335, lorea. coccinea 30-11-1947, Holland, Lucas (Prodr. Scheveningen. Kijkduin-Terheiden, ; Himanthalia lorea Noordwijk, 24-10-1948, ibid., Scheveningen, — from Noordwijk-Katwijk, Himanthalia 186, Heterosiphonia 333; Ag. mistake. (Sm.) (Ellis) equisetifolius Lucas Swennen 39, 290, cork. lorea. Himanthalia 24-10-1948, Lucas 168, 8-5-1949, Lucas clavata. setacea Haematocelis 182, a Raja clavata; :ï Lucas Noordwijk, record Cystoclonium Himanthalia lorea 181, Himantlialia ' The was to Raja Griffithsia Lucas (Wulf.) lorea. Goor) van Griffithsia 453, — 30-11-1947, Leenhouts 23-12-1947, Grev. (L.) 15-11-1949, eggs. Himantlialia, cited later Scheveningen, confervoides Buccinum *Grateloupia Sprong, filum; Noordwijk-Katwijk, cork; Wassenaarse Slag-Scheveningén, Ascophyllum clump Chorda 180, and 183, lorea. woodwardii 's Kütz. Gravenzande; 184, 185, 212, — lime, 292, Common. Vrijdag 362, 386, Everywhere Zijnen, 486, Muider 531, 541; between 7, Blol;- most on BLTJMEA 540 *Laurencia ef. Lucas 463, cf. obtusa Lucas 20-9-1948, Holder, everywhere Most Himanthalia on of clump Lamour. (Gm'el.) between IJmuiden Lucas 15-11-1949, tw ijk, Noordwijkerkout-Noord- Very — and 's Terschelling, common. Scliouwen. Gravenzande, (Huds.) ibid., Lucas 5-11-1948, Noordwgkerhout-Noordwijk, bunch of cork. Buse, XII-1841, Himanthalia loreu Buse, ibid. Noord wijk-Katwijk, — Zandvoort, — 16-8-1940, Haren, van 15-10-1938, Lacourt, Lyngb. 1-1844, Terschelling, — 23-7-1947, (Aresch.)Foslie 14, lime-stone; Katwijk, Himanthalia lorea-, — Aresch. ibid., eggs; lenormandii Lomentaria articula species'?) a lorea. Buccinum Lithothamnion 28-2-1949, dw ij k-K or Lamour. (Huds.) "■Lithothamnion calcareum (Pallas) Gcelhocd, No — 1950 2, Uimanthalia lorea. 23, Laurencia pinnatifida Den Lam our. caespitosa No. VI, cork. *Laurencia wi.jk, VOL. and (this cork; Himanthalia 235, lorea. Melobesia Rosan. lejolisii Zandvoort, — lorea; Wassenaarse Slag-Scheveningen, phylla. Probably not *Melobesia 19-12-1949, Mulder Him ant halia lo rea Neomonospora pedicellata 238, alata (this pedicellata (Sm.) Sol. lorea; Scheveningen, species?) ■—- G. 236, Chondria dasy- very Noordwijk, 5-10-1948, Fcldm. Meslin et Holland, van — Mono- Syn. 16-11-1948, Lucas 30-11-1947, cork. (Prodr.). Katwi.jk-Scheveningen, Scheveningen-Hoek Rijkers, Lucas 509, bunch of Katwijk — young. Umuiden-Bloemendaal, 15-11-1949, Stackh. (Huds.) are — lorea; (Sm.) Himanthalia lorea; Himanthalia 8, Noordwijk-Katwijk, • Membranoptera spora Foslie (Crouan) Himanthalia Buse, Lucas colonies most uncommon; zonalis 1-1844, 21-9-1948, 276, Lucas Himanthalia Lucas 18-12-1949, 538, Himanthalia lorea. *Nitophyllum 19 punctatum Grev. (Stackh.) IJmuiden-Bloemendaal, — " 12-1949, Mulder 9, Ilimanthalia lorea; Zandvoort, siliquosa; lorea- Noordwijkerhont-Noordwijk, ibid., 5-11-1948, Lucas 7-11-1948, Lucas 535, 387, Lucas 225, Himanthalia lorea ; Himanthalia lorea-, Mulder Croiian Himanthalia lorea; 10, Himanthalia Bloklander, *'Peyssonnelia Bwennen Hoek Halidriis Himanthalia 194, Katwijk-Scheveningen, van Holland, 18-12-1949, Hinmnthalia lorea. *Pevssonnelia atropurpurea 1949, 1-1844, Buse, Lucas 24-10-1948, — LJmuiden-Bloemendaal, Tcrheiden-'sGravcnzande, 19-12- 14-11-1948, lorea. rubra (Grev.) J. Ag. Den — 46, Himanthalia lorea-, Katwijk-Scheveningen, Helder, 24-11-1948, 7-11-1948, Lucas 376, IIimanthalia lorea. ,s 210. 10-10-1948, Himanthalia cf. siliquosa; 8/9-2-1949, ningen, Plocamram Halidrys Raja thalia clavata; ; borreri Noordwijk, Lucas J. W.) et ; (Sm.) 8-5-1949, Nag. Ag. ; — Noordwijkerhout- ibid., 24-10-1948, (Huds.) Lyngb. Lucas Lucas 1-3844, Buse, Katwijk-Scheve- lanosa. Zandvoort, — 11-3-1949, Noordwijkerhout-Noordwijk, 8-5-1949, 303, beam ; , Zandvoort-Katwijk, Noordwijk, Zandvoort, — Lucas 307, Polysiphonia coccineum siliquosa lórea (G. Lucas 239, Himanthalia lorea lorea. Pleonosporium Halidrys of membranifolia Phyllophora Noordwijk, Lucas 5-11-1948, 300, clump 322, Lucas of 1-1844, egg Buse, capsule 231, Himan- Buccinum eggs; J. ibid., A. W. Lucas 13-11-1949, wi.jk, Raja of capsule *Polysiphonia of bunch cork; thalia lorea; cork; 16-11-1948, ibid., of elongata Polysiphonia bunch 144, cf. *Polysiphonia on of bunch cork; of cork; clavata; (Pluds.) 15-11-1949, Scheven Lucas 476, ingen, 19-10-1946, Zandvoort-Noordwijk, 26-11-1949, — — (L.) nigrescens urceolata cork; violacea ship's Grev. (Lightf.) (Roth) 167, capsule of cork. IJmuiden, — Mul- 19-12-1949, Lc-enhouts 23-12-1947, Bloklcmder, egg 169, bunch of wood. Grev. Ag. — 1-1844, Lucas branch; 519, 100, cork; cork. Zandvoort, 20-1-1949, Lucas of Bloklander, Lucas 5-11-1948, bunch 469, 7-10-194G, Texel, — Chorda Buse, bunch 94, of Scheveningen, cork; Vrijdag Ag\ pluma Friesland — (Prodr.); Thur. (Dillw.) — Zandvoort Den Helder, (van Goor). 24-11-1948, Ilimanthalia lorea. small red which alga within probably Rhodochorton rothii Noordwijk-Katwi.jk, Lucas 522, mast. plumosa (L.) 15, (Hydrozoa) Lucas Leenhouts '■Rhodochorton membranaceum Magn. a cork. 170, Texel, 7-10-1946, — Grev. Lucas J. (L.) 15-11-1949, *Ptilothamnion Swennen Texel, Always Mulder 12, 19-12-1949, Leenhouts 15-11-1949, Noordwi.jkerihout-Noordwi.ik, Ptilota Holland. van LJmuiden, — 23-12-1947, 15-11-1949, Noordwijk-Katwijk, Zijnen, Batt. Seheveningeii, laciniata Porphyra Tersehelling, common. Noordwijkcrhout-Noordwijk, N oor dwijk-Katwi,jk, filum; Very 23-12-1947, 19-1-1948, Lensink, Polysiphonia cork; — (Dillw.) Scheveningen, bunch of of Tandy between IJmuiden and Hoek Noordwijk-Katwijk, Terheiden, bunch 1949, of 101, Himanthalia lorea; Lucas Ilarv. Harv. nigra (Huds.) Polysiphonia 13, beam; Mulder bunch 14, cork. Scheveningen, Polysiphonia bunch found cork. 19-12-1949, Stock 26-11-1949, 10-10-1948, of 506, bunch nodosum. Ascophyllum cork; bunch 140, LTmuiden, — Noordwijk-Kat wjjk, elongella lanosa Polysiphonia der of Helder, everywhere Raja 490 and 478, Hima-n- 99, 15, cork. Polysiphonia Den cork; 3, Lucas Bloklander, Lucas cork. Leenhouts Stock Kütz. Zandvoort-Noordwjjk, Lucas 20-1-1949, lorea; Haven, van 7-10-1946, 10-10-1948, Leenliouts (Dillw.) cork; Noordwijkcrhout.-Noordwi.jk, bunch 4-12-1946, Texel, — 15-11-1949, 19-9-1946, denudata cork; Lucas 7-11-1948, Himanthalia 230, Holland, van Grev. (Dillw.) Noordwi,jk-Katwi.jk, of Lucas 541 N oordwijk-Kat- clavata Raja Noordwijkerhout-Noordwijk, Schevcningcn, bunch 11, of etc. clavata. brodiaei Polysiphonia drifting objects, on ibid.; Katwijk-Scheveningen, Bisschop ■ Kijkduiri-Hoek Scheveningen, egg transported capsule egg 526, Himanthalia lorea; ibid., 229, of algae 445, Lucas 15-11-1949, Tluc LUCAS:, the belongs (Lyngb.) to Nag. 15-11-1949, 532, Himanthalia — Several of hydrothecae this — times there has heen Laomedea geniculata species. Noordvvijk, Lucas 510, 8-5-1949, bunch lorea; Scheveningen, of Lucas cork; ibid., Vrijdag Zijnen, 305, 6-12- Himan- thalia lorea. Rhodomela Swennen Lucas 41, 206, lycopodioides HimanthaUa Ilimanthalia (L.) lorea; lorea; J. Ag. — Don Helder, 24-11-1948, Noordwijkerhout-Noordwi.jk,, Noordwijk, 5-10-1948, Rijkers, 5-11-1948, Himanthalia BLUMEA 542 lorea; Kijkduin-Terheiden, As there far is I as No. VI, between 2, the material in R. 1950 Lucas 21-11-1948, judge from can difference no VOL. subfusca Himanthalia 39, the Kijksherbarium, and Ag. (Woodw.) lorea. Leiden, R. lycopo- dioides. bifida Rhodophyllis and (Prodr. The later cited specimen concerned Rhodymenia :! of 531, of X: ' de from Zandvoort identification. a.wrong uncinatum. Zandvoort — (Crouan) record on Toni (Prodr.). IJmuiden, — 19-12-1949, turneri Aresch. (Mert.) Kijkduin, — 18-12-1949, Lucas nodosum. Harv. (Wulf.) IJmuiden, — Mulder 19-12-1949, cork. Trailliella intricata Lucas The — based Acrosorium to Grev. (L.) filamentosa ■Spyridia bunch 15, was cork. Spermothamnion Ascophyllum Kiitz. belongs gaillionii bunch 14, W.) Goor) et van palmata Seirospora Mulder (G. by (J. Batt. Ag.) Kijkduin-Terheiden, — 21-11-1948, Himanthalia lorea. 37, Literature. BI/OKLANDEU and J. CAKKUTHERS, surface Cyanophyeeae and , , 2e 1925, VI, 9—73. 1931, de Phdophycdes W. F., KOLDEKUP Die Meeresalgen Bd. 2.; Vidensk. 1—4; F. T., , , , Gastro- 10, 1946, Sea, 119 2, n. Part pp. I. The XII crts, do la Mediterranfio occi- — Bd. Vcrh. 14; Kon. Leipzig, Akad. 1932. Wetensch. 1923. 2, — Rev. The Algol. I, 1924 —1925, 278'—293 Bemerkungen iiber 1930, 298' —297 1—55 and and 383—430; 1931. London, und 1846' —.1851. Oestorreichs Rabenhorst —- Krypto- algae of Denmark, I, Rhodophyceac Raekkc, 7. Naturvidensk. — D. Mathem. og Kgl. Afd., .1909—1931. observations les Bryopsis XV, 1841—2, sur du Golfe de Naples 225—258. Ag. Linnaea — 727—746. 1849. Bd. die iiber 168—174, 1924, V, I—XIX, 1845—1869. Algenflora dor schwedischen Wcstkiiste, Akademische 1907. cinige Coramium-Arten — Botaniska Notisor 1924; 443 —452; 1924. Studien 6; marine Ceramium Bhyeologicac Studien H., I, 43—76; 1885. Skrifter, 1941, 2, Ibid. — 1929, Deutschlands Algarum; Lipsiao, Tabulae Die Geramiacees Ectocarpales, Quelques n. Uebcr I, IV, Leipzig, Ivdbenhavn, Blumea, IV, Species Nr No. Brittannica; Selsk. Josephine Th., Lund, , Loricata, Bastcria — North VIII, Ivryptogamenflora, frangaises France, Abhandlung; Upsala, , Southern vol. Mecresalgen Bangiales 68—71; Phycologia ROSENVINGE, L., VH. NYLIN, the II, les sur XXIII, cotes H., Dansko KUTZLNG, Dl. France. des — strand 407—457. gamenflora, , de II, KOSTEII, in Rabenhorst — Sect. 458—461; HAUCK, adventievc natuurlijke Ncderlandsche Series Hollandische Chlorophycdes HARVEY, , Die van, Floriddes G., EL. Invest,. Recherches G., Amsterdam, HAM hot 1940. Alger J. Do M., 1925. tab., C. H. van movements water Fish. — — L., A. Gooit, E. 89—100. 1947, The N., dentale; GEITIER, 11, drift LXXX A. BROUWEB, Lamellibranchiata en 49—64, FELDMANN .T. en poda iibor Lund, die Delcsseiriaceen — Lunds Univ. Arsskrift. N. F. Adv. 2. Bd. 20. 1924. Phaeophyceenondniung Chordariales Schwedischein Die Rhodophyceen der Die Phaeophyceen der Sehwedischen — Ibid. Westkiiste Westkiiste Bd. — — 3G. Nr Ibid. Bd. Ibid. Bd. 9; 40. 43. Lund, 1940. Nr 2; Lund, .1944, Nr. 4; Lund, .1947. J. A. LAKOWITZ, LEVRING, Die K., NEWTON, V. FLORAE G., L. Swedish A. SLOOTWEO, n. W. TONI, G. F. F. Avd. of B. DE, VELDKAMP, H., British 33. Ostseo; der Nr 8; Lund, Ceramium Raekke, 7. etc. 543 1920. Dantzig, Westkiiste Norwegisclien — Lunds 1937. Seaweeds; London, Slaegten Skriftcr, Vol. 2. II, 1931. (Roth) Lyngbye Naturvidensk. — D. Ivgl. Mathem. og Afd. 23. 109—236. 1858, Oeresund, their Bd. II, pars over XIV classification Nr. Netherlands' Algae Michigan Syllogc The Bd. drifting objects, on 12; Lund, Marine — and Revision ecology of dubious some — Lunds Univ. 1928. Cladophora species — Blumca VI, 274—281. Marine R., 2. af types, The G., gesammten Algenflora Undersiikninigar N. transported 1908. BATAVAE, 1, 1947—1948, versity the Arter Ceramium Arsskrift, der der Selsk. K0benhavn, 2; PHODROMUS SJOSTEDT, Vidcnsk. algae Avd. of Danskc E., Danske F. N. handbook A H. The Kenntnis Arsskrift. L., PETERSEN, LUCAS: Algenflora Zur Tore, Univ. W. genus of studies, Algarum the Northeastern Vol. XIII; omnium Polysiphonia in hucusque the Coast Norwood, of North America — Uni- 1937. cognitarum; Netherlands — Padua, Blumea VI, 1889 —1924. n. 2, 1950, 517—526. I.IZERMAN, 11., Tran sporteerend zeewier — Do Levende Natuur, 42, 1938, 14&—150.