466 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Hebzog, T. — Die Laubmoose Badens. (The moss-flora of Baden.) 



[Continuation.] Bull. Herb. Boissier, vi. (1906) pp. 409-24. 



Mereill, E. D. — The Flora of the Lamao Forest Reserve. 



[Contains a list of 23 mosses and 11 hepatics from this Philippine forest ; 

 three of the mosses are endemic] 



Philippine Journ. Sci., i. supp. 1 (Manila, 1906) pp. 10-13. 



Monkemeyer, W. — Bryologische Wanderungen in der Rhonim Juli 1905. (Bryo- 

 logical wanderings in the Rhongebirge.) 



[The author alludes to Geheeb's description of the moss-flora of Milseburg, 

 in which 222 species are recorded. In the present paper 12 species are 

 added to the flora, and the habitats of other species are described. 

 Thirty-five hepaticas are also recorded for that region.] 



Hedioigia, xlv. (1906) pp. 182-9. 



Stephani, F. — Species Hepaticarum. 



[Continuation, containing descriptions of Leioscyphus (5 species), Sotithbya 

 (3 sp.), Amellia (1 sp.), Gongylanthus (11 sp.), Clasmatocolea (6 sp.)] 



Bull. Herb. Boissier, vi. (1906) pp. 377-92. 



Watts, W. W. — Australian Mosses. Some Locality Pictures. 



[Continuation.] Bryologist, ix. (1906) p. 41. 



Thallophyta. 



Algae. 



(By E. S. Gepp.) 



Colouring Matter in the Chromatophores of Diatoms.* — F. Gr. 

 Kohl continues his studies on this subject, and in the present paper he 

 states definitely that the pigment of diatom chromatophores consists of 

 (1) chlorophyll, with the same spectrum of absorption as that of the 

 higher plants ; (2) carotin ; (3) xanthophyll. The author criticises 

 the work of Molisch on the subject, and considers the presence of leuco- 

 cyanin in diatoms is merely hypothetical. No such substance as diatomin 

 exists at all in plants. There is no reason to consider the colouring of 

 the chromatophores of diatoms, as differing from that of the chromato- 

 phores of the leaves of Phanerogams. Reasons for his conclusions are 

 given by the author, with details of his experiments. The paper closes 

 with a reply to the criticisms of M. Tswett. 



Pleomorphism of Melosira.f — 0. Muller discusses the pleomorphism, 

 auxospores, and resting spores of Melosira. Beginning with a short 

 account of collections sent to him from Iceland by C. H. Ostenfeld, and 

 from Zurich and Neu-Ruppin by other savants, he sums up the observa- 

 tions of previous authors on the pleomorphism of Melosira and sundry 

 other genera, modifying some of his own former conclusions. He de- 

 scribes a new species, M. islandica, with its varying forms, auxospores 

 and their germination ; and the same for the new sub-species, M. hel- 

 vetica, and for 31. italica Kuetz. The latter is the first fresh-water 

 species in which resting spores have been found, these having previously 

 been recorded as M. Icevis, a species which must now be cancelled. A 

 new sub-species of M. italica is described in all its forms ; it is called 

 M. subarctica. The development of the auxospores has been carefully 



" Ber. Deutsch. Bot. Gesell., xxiv. (1906) pp. 124-34. 



t Pringsheim's Jahrb. wiss. Bot., xliii. (1906) pp. 49-88 (2 pis. and figs.). 



