Lichenes. — Bryophyten. 22,9 



varieties of colour, which are inheritable and probabl}?- originated 

 by mutation, being in want of intermediate forms. 



III. Fasciations. The fasciated twigs of Alectoria, Ramalina and 

 Usnea are described; their importance for the Classification is 

 discussed, and the distinction is given between the genuine fascia- 

 tions and the false ones, which are originated by bursting and 

 unfolding of hollow cylindrical twigs for instance among Cladonia 

 deformis and other larger Cladonia- and Cetraria-s^ec'xe's, , especially 

 when exposed to irrigations. 



IV. Budvariations and vegetative mutations. The author has 

 found Usnea plicata (L.) with twigs, which completely responded to 

 the description of Usnea dasypoga (Ach.) and Ramalina fraxinea (L.) 

 with twigs corresponding to Ramalina farinacea{l^.), this he calls the 

 genuine in Opposition to the false budmutation, which he explains 

 as the (frequent) case, that the buds of the young liehen are diffe- 

 rent of the buds of the old ones, even if the latter can be multiplied 

 in the same way as Hedeva "-arboreä". Lind (Copenhagen). 



Britton, E. G., Notes on nomenclature, IX. (The Bryologist. XL 



p. 24, 25. March, 1908.) 



Notes on part 229 of Engler and Prantl, Die natürlichen 



Pflanzenfamilien, dealing with several families of mosses. These are 



discussed with particular reference to the North American species. 



Maxon. 



Cardot, J. and I. Theriot. On asmall collectionof mosses 

 from Alaska. fUniversity of California Publications, Botany. IL 

 p. 297-- 308. plates 27, 28. December 29, 1906.) 



Report on mosses collected in Alaska during the summer of 

 1899 by Messrs. Setchell, Jepson, Hunt and Lawson. The 

 following are described as new: 



Orthotrichiim cancellatum Card. & Ther., related to O. fene Stra- 

 tum Card. & Th6r., Philonotis fontana heterophylla Card. & Ther., 

 Bryum pseudo-Graefianum Card. & Ther., related to B. Graefianum 

 Schlieph. and B. Kaiirinianum Warnst., Bryum Setchellii Card. & 

 Ther., allied to B. agattuense Phil, and B. mavitimum Born., Pla- 

 giothecium undulatum myurum Card. & Ther., and Hypnum pseudo- 

 sarmentosuni Card. & Ther., similar to H. sarmentosum Wahl. Most 

 of these are figured. Maxon. 



Evans, W., Lopholejeunea Muelleriana in Florida. (The Bryolo- 

 gist. XL p. 45—46. May, 1908.) 



Lopholejeunea Muelleriana (Gottsche) Schiffn., described origi- 

 nally from Mexico and now known also from South America 

 and several of the West Indian islands, is reported from San- 

 ford, Florida. So far as their vegetative organs are concerned the 

 Florida plants are said to agree well with those from Puerto 

 Rico, recently (1907) redescribed by the author. "The perianth, 

 however, shows a greater development of paraphylla or laciniae on 

 the surface and indicates that this organ exhibits an even wider 

 ränge of variabilit)^ than had been supposed." A reexamination of 

 considerable material leads to an emended description (here given) 

 of the surface of the perianth. Maxon. 



