368 Bryophyten. 



tical notes are appended to other species, for example, Papillaria 

 fuscescens (Hook.) Jaeg., Meteorium atratum (Mitt.) Broth., Homalio- 

 dendvon ligulaefoliam (Mitt.) Fleisch., Pinnatella calcutensis (C. M.) 

 Fleisch. A. Gepp. 



Dixon, H. N., On some Mosses of New Zealand. (Journ. 

 Linn. Soc. XL. Bot. N°. 277. p. 433—459. 2 pl. London, May 1912.) 



The mosses treated of were mostly collected by James Murray 

 in the north and south islands during the visit of the "Nimrod" of 

 the British Antarctic Expedition (1907—9); but others were sent by 

 various collectors from different parts of the islands. The species 

 fall into three categories: 1) Malay-Australian, 2) endemic, 3. Antarctic- 

 Fuegian. One hundred and thirty-two species are enumerated, and 

 six of these are described as new: Andreaea (Chasmocalyx) Michellii 

 Broth. et Dix., Dicranum (Holodonlium) Mackayi Broth. et Dix.. 

 Fissidens (ßemilimbidium) anisophyllus Dix., Trichostomum grossirete 

 Broth. et Dix., Macromitrium (Goniostoma) rigescens Broth. et Dix., 

 Tetraphidopsis [n. gen.J uovae-see/audia Broth. et Dix. The new 

 genus Tetraphidopsis belongs to the Ptychomniaceae. Critical notes are 

 added to several of the species, e. g., Leucoloma Pungentella (C. M.), 

 Campylopus clavatus, C. insititins, Macromitrium caducipilum, Tham- 

 nium latifolium. A. Gepp. 



Dunhan), E. M., Polxtrichum approaching P. Smithii. (The Bryo- 

 logist. XIV. p. 90-91. Sept. 1911.) 



The writer here publishes certain critical notes by J. F. Col- 

 lins on specimens which appear to be intermediate between Poly- 

 trichum ohioense and the reeently described P. Smithii Grout). 



Maxon. 



Evans, A. W., Branching in the Leafy Hepaticae. (Ann. 

 Bot. XXVI. p. 1—37. 36 figs. Jan. 1912.) 



Two modes of branching, terminal and intercalary, are found 

 in the Junger manniaceae. In terminal branching the branches arise 

 in very young Segments cut off from the apical cell; while in 

 intercalary branching they arise in Segments more or less mature. 



1) Terminal branching includes four distinct types according to the 

 portion of the segment which takes part in the branch formation: 

 a) in the Fruüania type the branche represents the ventral half of 

 a lateral segment; b) in the Microlepidosia type, the dorsal half of 

 a lateral segment; c) in the Acromastigum type, one of the halves 

 of a ventral segment; d) in the Radida type, a portion only of the 

 ventral half of a lateral segment. In the first three of these types 

 the branch is always accompanied by an incomplete leaf arising 

 from the other half of the same segment; but in the Radula type 

 this leaf is a complete one, and belongs to the same segment. The 

 branch-spiral may be homodromous or antidromous with the axis, 

 according to whether it has arisen in an anodic or kathodic segment- 

 half. The leaf subtending the base of a terminal branch, especially 

 in the Fruüania type, is modified in form, size and attachment, 

 either showing a reversionary tendency, or being specially adapted. 



2) Intercalary branches are either lateral or ventral. The branch- 

 spiral shows no relation to the axis. There is no definite rule as to 

 the first branch-segment. Intercalary branching is apparently a more 



