790 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Marine Algology.* — A. Mazza continues his studies of marine 

 algology, and treats of the following genera : — Callithamnion, Seirospora, 

 Cmnptothamnion, Spongoclonium, Haloplegma, Euptilota, Ptilota, Plu- 

 maria, Dasyphila, Muellerena, Psilotkallia, Ballia, Antithamnion. 



Marine Algae of Kamerun.t — R. Pilger gives an account of the 

 marine algae of Kamerun collected by C. Ledermann. The Localities 

 searched were Victoria, Kl. and Gr. Batanga, Elabi-Ilende, Kribi, Bodje, 

 Campo. The number of species recorded is forty-five, ten of which 

 are new. The author discusses the morphology of the species and their 

 distribution. The Cladophoraceae were determined by F. Brain I. 



Fungi. 



(By A. Lorbain Smith, F.L.S.) 



Notes on Mucorini. i — Fernand Moreau gives an account of the 

 histology of some Mucorini, with special reference to the nucleus. The 

 latter he has studied under various aspects : in the resting stage it 

 consists of a nuclear membrane, nucleoplasm, a chromatic mass, and 

 a nucleolus which may be either central in position, excentric, or lying 

 against the internal wall of the nucleus. Karyokinesis in this group 

 was also studied by Moreau ; it is characterized by the presence of a 

 spindle, two centrosomes, two chromosomes, and by the absence of the 

 nucleolus and the nuclear membrane. The disappearing of the nucleolus 

 is peculiar to the Mucorini among fungi. The absence of the nuclear 

 membrane distinguishes them from the Ascomycetes and Siphomycetes. 

 Amitosis or direct division was also noted. 



Notes on Hypocreaceae.§ — Rene Maire divides this family into the 

 genera Pyxidiophora, Peckiella, Hypomyces, and Nectriopsis g. n., the 

 latter intermediate between Hypomyces and Nectria. Maire insists on 

 attention being paid, in this group, to the form, septation, and orna- 

 mentation of the ascospore. In some genera an apiculus is always 

 present, in Nectriopsis it is always absent. It should also be stated, in 

 any description, whether the spores have been studied in water, in some 

 special medium, or dry. Figures are given of the spores. 



Study of Laboulbeniales.|| — J. H. Faull describes the structure of 

 thallus and fructification in several species of Laboulbeniales. The 

 spores are uninucleate at first, then become bi-nucleate before maturity. 

 The entire plant-body is enclosed by a thin chitinous membrane ; the 

 walls of the cells are thick and laminated. 



Antheridia are exogenous as in Zodiomyces, or endogenous as in 

 Lain id bmin ; usually they are borne on the same plant as the female 

 organs. Spermatia are formed as short lateral branches of the antheridia, 

 probably several in succession. The one nucleus almost fills the entire 

 cell. The procarp begins as a single uninucleate cell, an outgrowth 



• Nuov. Notar., xxii. (1911) pp. 53-80, 109-39. 



t Engler's Bot. Jahrb., xlvi. (1911) pp. 294-323 (26 figs.). 



I Bull. Soc. Mycol. France, xxvii. (1911) pp. 204-10. 



§ Ann. Mycol., ix. (1911) pp. 315-25 (1 pi.). 



|| Ann. of Bot., xxv. (1911) pp. 650-4. 



