586 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Gehebb, A.— Neue Formen und Varietaten von Laubmoosen aus der europaischen 



t Flora. (New forms and varieties of mosses of the European flora.) 

 ~ _ •" rCritical notes upon ten forms from various localities.] 



Beih. Bot. Centralbl. xxii. 2 (1907) pp. 97-101. 

 M'AECHAL, E. — Arthur Mansion. 



[Obituary notice of A. Mansion (born 1863, died 1905), the leading bryologist 

 of Belgium.] Bull. Soc. Roij. Bot. Belgiqjie, xliii. (1906) pp. 376-9. 



M o L L E E, H. — Ett par npplysningar angaende den snart utkommande forteckningen 

 ofver Skandinaviens Mossor. (A few explanations concerning the catalogue of 

 Scandinavian mosses soon to be issued.) 



[A list of new name-combinations, with synonyms.] 



Bot. Notiser, 1907, pp. 141-5. 



Boll, J. — ITeber die neuesten Torsmoosforschungen. (On the latest researches 

 upon the Sphagna.) 



[Conclusion of article.] Oestcrr. Bot. Zeitschr., Ivii. (1907) pp. 142-6. 



Stephani, F.— Species Hepaticarnm. (Species of Hepatics.) 



[Continuation of descriptions of new and little known species of Lophocolea 

 (27) and Harpanthus (1) ]. Bull. Herb. Boissier, vii. (1907) pp. 477-92. 



Waenstobp, C.^ — Biccia bavarica sp.n. 



[Description and figure of a new Biccia, collected near Regensburg by 

 I. Familler.] Hechoigia, xlvi. (1907) p. 299 (fig.), 



Thallophyta. 



AlgSB. 



(By Mrs. E. S. Gepp.) 



Algological Notes.* — A. Scherffel commniiicates four short notes 

 on the subjects which have arisen during his studies on the microscopical 

 organisms of fresh-water. The first is entitled variety of development 

 in the stigma of Pandorina morum Bory. The author has observed 

 a colony of this alga in wl)ich the cells at one pole of the colony 

 possessed markedly large stigmas, while the cells at the opposite pole of 

 the colony had none at all. The cells between the two poles had a 

 stigma of small size. Hitherto this phenomenon has only been observed 

 in Volvox. The second note describes swarm-cells with several stigmas, 

 an occurrence which has never yet been described, though Kuckuck had 

 previously observed it in swarm-cells of Ph^ophyceaj. The present 

 author records the phenomenon in a zoospore of Bulbochcete, which 

 had four stigmas, and in a cell of Chlamydo7nonas sp. which had two. 

 Details of both cases are given. The next note is on a forgotten 

 (" verschollene ") species of Chlamydomonadine^, Carteria duhia (Perty) 

 Scherflfel, of which a description is given, together with a discussion on 

 its systematic position. Finally a new species, GhamcBsiplion hyalinus, 

 is described. 



Fresh-water Algal Flora of the Tropics.f— F. E. Fritsch pub- 

 lishes a phytogeographical and ecological study of the sub-aerial and 

 fresh-water algal flora of the tropics, based on the records contained in 

 the literature enumerated at the end of his paper — a bibliography of 

 111 titles — and partly upon his own observations made in Ceylon. His 

 object was to make an analysis of the existing data of these tropical 



* Ber. Deutsch. Bot. Gesell., xxv. (1907) pp. 228-32 (figs.). 

 t Ann. of Bot., xxi. (1907) pp. 235-75. 



