I \.-FRESHWATER ALG.E OF THE SOUTH ORKNEYS. 1 



By I Iv Fr.ii-. H. D.Sc., Ph.D., Eaat London College (University of I^ondon). 



(With Two Plates.) 



I. INTRODUCTORY REMARK- 



IN the year 1905 I received from Dr R. N. Rudmose Brown seventeen tubes of fresh- 

 water and suboerial algae collected by him in tin- Smith Orkneys, while acting as 

 botanist to the Scottish National Antarctic Expedition (1902-04). I am glad to 

 hBTe this opportunity of thanking him for placing this interesting material at my 

 disposal. 



Our knowledge of Antarctic freshwater algae is at present not very extensive. 

 The first important contribution was that <>f Hooker and Harvey,* based on the material 

 collected by the Erebus and Terror in 1839-43. This was followed about thirty-five 

 yean later by two pa}K>rs of Reinsch,* containing a description of the alg collected by 

 the Rev. A. E. Eaton on the island of Kcrguelen. A later paper by Keinsch ' dealt* with 

 freshwater algae collected by Dr H. Will in South Georgia, Wille * has further described 

 a few forms brought by C. E. Borchgrevink from the Antarctic continent, and 

 De Wildeman a number of algae collected by E. Rucovitza of the Belgian Antarctic 

 Expedition." In 1909, lastly, there appeared the important contribution of Van Heurck 

 on the diatoms of the same expedition. 7 



i Revised and reprinted from Jour*. Linn. Soe. Land., R-4* vol. xl., 1912, pp. 293*338. 



J. D. Hooker, Tkt Botany of the Antartiie Voyagt of H..M. diteorery Aipt " Krtbut* and " Terror " in tin ytart 

 1839-43 (Worn Antarttita\ London, 1844 : " Alga; " (by W. H. Harvey and J. I). Hooker), vol. L pp. 176-193 ; vol. ii. 

 pp. 464-619. 



1 P. F. Reinnch, u Species ac Genera nova Algaram aqiuo dulcis, qtue stint invent* in tpeciminibui in expedition* 

 Vener. transit, hieme 1874-76 in Inul Kergtielen*i a clar. Eaton collectU," Jour*. Linn. Soe., Bo, v., 1876 ; P. F. 

 Reinsch, "Freshwater Alfpv collected by the Rev. A. E. Eatnn (Alg- aqun- dulcu Ininlir Kergueleniii) : Account 

 of the Petrologiea], Botanical, and Zoological collection* made in Kerguelen'a Land and Rodriguez during the Traniit 

 at Venus Exped' UoM > 1874-76," PkiL Train. Hoy. Soe. Loud., vol. 168, 1879, pp. 65-92. See also W. Archer, 

 Note on the Freshwater Alga: collected by H. N. Moeeley in Kergoelen'i Land," Jour*. Linn. S.*.. Ii.4., xv., 

 1876, pp. 446-446 ; E. O'Menra, " On the Diatomaceoiu gathering* made at Kerguelen'x Land by H. N. Moseley, 

 H.M.S. CmaUenyrr," lot. fit., pp. 55 59. 



1 I*. F. Rein*ch, "Die Suatwawerulgenflorn v. i, Surl-Qeorgien," IHe international* /'olar/<nr*u*g, 1882-83. 

 Ditdnixkm Kxptditiontn und ikn Ery,bnitte, Bd. ii., Berlin, 1890, pp. 329 365, Jahrb. i. iv. 



N. Wille, "Mitteilungen ul-r .-iiiij-i- von C. K. liorrhgrerink auf deiu anUrktinchen Kmtlande ge*animelt 

 Pflanxen : III. AnUrktiiche Algen (by N. Wille) ; IV. \arieuta mutiea, Kutx^ an* dem anUrktiicben FartUnde (by 



Imboe),'' Ay Magamnf. ffaturvidatttab, xl., 1902, pp. 209-222, pi. iii. n 



E. de Wildeman, "Note pr. liminain- *ur leu Algue* rapportee* par M. E. Racovitia, naturali*te de I'expedilion 

 antarctique beige," Bull. Atad.Roy.it BcfpfiM, 1900, pp. 55B-569. 



Van Heurck, " DUtomcea," in Rtt. toyagt da ,.y. Htlyifa' tn 1897-99, Antwerp, 1909, pp. 1-128, pi*, i. xm 

 WhiUt the present paper ha* been in the press, there has also appeared Ifesws West's report on the Freshwater Atg* 







