184 SUMMARY OF CURRENT RESEARCHES RELATING TO 



New Brachythecium.* — 0. E. Jennings describes and figures the 

 structure of Brachythecium pacificum, a new species collected by W. 

 Spreadborough on the Queen Charlotte Islands off the north coast of 

 British Columbia. He indicates the characters by which it differs from 

 B. subasperrimum Card. & Ther. 



Bryological Notes. f — V. Schiffner continues his series of notes 

 upon questions of bryology. Inter alia, he describes and figures the 

 gemma? of Hydrogonium Ehrenbergii ; records new stations for Scapania 

 intermedia in North Bohemia and Ireland ; declares that Jungermannia 

 confervoides Hampe is not an independent species but the slender small- 

 leaved off -shoots of the leaves of Plagiochila dichotoma ; records new 

 stations in Hungary for Riccia Frostii ; and adds remarks on some 

 interesting Swedish hepatics. 



Siberian Bryophyta.f — H. W. Arnell, in an account of the bryo- 

 phyta collected in the valley of the Lena by H. Nilsson-Ehle in 1898, 

 gives descriptions of 15 new species and varieties, illustrated by some 

 figures showing leaf-structure, etc. Altogether 241 mosses, 14 sphagna, 

 and 61 hepatics are enumerated. 



Mosses of East and South Africa.§ — V. P. Brotherus, in an 

 account of the moss-collections made by J. Brunnthaler in German 

 East Africa and in Cape Colony, Natal, and Rhodesia, publishes de- 

 scriptions of 14 new species. In all 92 species were collected, and 

 these belong to 61 genera. 



Thallophyta. 



Algae. 



(By Mrs. E. S. Gepp.) 



Plankton of the Adriatic! — J. Schiller gives a preliminary 

 report on the Coccolithophoridse collected by S.M.S. ' Najade ' in the 

 Adriat : c in 1911-12. After describing the new genera and species, he 

 deals with the biological aspect and summarizes shortly his results. 

 No region of the Adriatic was found to be devoid of these organisms. 

 The littoral forms were more numerous than the pelade, the proportion 

 being five to two. They resemble the diatoms in being purely surface 

 forms, reaching their maximum development in 2-5 metres depth and 

 in some cases to 20 metres. The author attributes this to a strong 

 need of light. Finally, he states that the Coccolithopliorida? reach 

 their maximum in summer, at a time when net-phytoplankton is very 

 poor, and thus provide compensation in the food supply. 



The same author^ gives a preliminary report of the Flagellates and 



* Bryologist, xvi. (1913) pp. 95-6. 



t Oesterr. Bot. Zeitschr., lxiii. (1913) pp. 453-6 (figs.). 

 t Archiv f. Botanik., xiii. No. 2 (1913) 94 pp. (3 pis.). 

 § Denkschr. Math.-Nat. k. Akad. wiss. Wien, lxxxviii. (1913) pp. 734-43. 

 || SB. k. Akad. wiss. Wien, exxii., (1913) pp. 597-617 (3 pis.). 

 Tf SB. k. Akad. wiss. Wien, exxii. (1913) pp. 621-30 (1 pi.). 



