346 SUMMARY OF CURRENT RESEARCHES ' RELATING TO 



Thallophyta. 



Algae. 



(By Mbs. E. S. Gepp.) 



British Algae.* — E. M. Holmes has issued the twelfth fascicle of his 

 Algaj Britannicae Rariores Exsiccatse, which is to be the concluding one 

 of the series. He also publishes a list of the algae contained therein, in 

 which a few small errors are corrected, which had appeared in the original 

 issue. Among the alga? represented are Godium elongatum from Clare 

 Island, and Myrionema reptans, a new species, from Swanage. 



Italian Algae.f — S. Sounder, in his Flora of the Island of Pianosa 

 in the Tyrrhene Sea, gives a list of 57 algae, determined by A. Forti, 

 A. Mazza and Formiggini. They are as follows : 1 Chara, 19 Floridege, 

 11 Fucoidese, 6 Chlorophyceae, and 20 Heterocontse and Acontee. 



Marine Algae of Panama. J— M. A. Howe publishes a report on a 

 botanical visit to the Isthmus of Panama, in which he records a few 

 interesting notes on the marine algas which he collected there. 



West Indian Marine Algae. §— M. A. Howe publishes a short report 

 of his work on marine algaa during an expedition to Jamaica, Cuba and 

 the Florida Keys. He was able to enlarge his previous collections to 

 713 numbers, including about 40(H) specimens. One of the most inte- 

 resting finds was Bryopsis Duchassaingii J. Ag., a plant which was 

 re-described by Montagne six years later under the name of Trichosolen 

 Antillarum. Hitherto this species has only been known from Guadeloupe, 

 but was found by the author at Port Antonio, Jamaica, as well as at 

 Port Morant. Other interesting records were Acetabulum polyphysoides 

 and Petrosiphon from Jamaica, Sarcomenia filamentosa from Cuba, Neo- 

 meris ■mucosa, and species of Gaulerpa, Halimeda, Avrainvillea, etc. 



Japanese Algae. || — K. Okamura publishes a further part of his Icones 



of Japanese A!ga3, including Carpopeltis rigirfa Schmitz, C. angusta Okam., 



C. articulata Okam., G. data Okam., and Prionitis patens Okam. The 



• plates are as usual explained in Japanese and English, and a few remarks 



are added. 



Three new Chrysomonads.H — A. Pascher describes and figures three 

 new species of Chrysomonadea;, belonging to the genera Chrysocoecus, 

 Ghromulina and Uroglenopsis respectively. All three were found in an 

 old bed of a tributary of the Moldau, in the forest of South Bohemia, 

 near Mugrau. The author considers it probable that the mildness of 

 the climate is specially adapted to the growth of these organisms, and 

 that those already known probably only represent a fraction of the 

 existing species. 



Volvocaceae.** — H. C. Jacobsen has succeeded in cultivating certain 

 of the Volvocacea?, and describes his experiments in detail. He finds 



* Journ. of Bot., xlviii. (1910) p. 109 



t Nuov. Giorn. Bot. Ital., xvii. (1910) pp. 147-9. 



J Journ. New York Bot. Garden, xi. (1910) pp. 20-44. 



§ Op. cit., x. (1910) pp. 115-18. 



|| Icones of Japanese Algre, ii. No. 4 (1909) pis. 66-70. 

 % Oesterr. Bot. Zeitschr., lx. (1910) pp. 1-5 (1 pi.). 

 ** Zeitschr. Bot., ii. (1910) pp. 145-88 (1 pi.). 



