Bryophyten. — Pteridophyten. 379 



Williams, R. S., Mniiim ßagellare Süll, and Lesq. in North 

 America. (The Bryologist. XV. p. 10. 1 textfig. January, 1912.) 

 Mniiim flageUare, first described from Japan and not previ- 

 ously known from North America, is here reported from Kodiak 

 Island, Alaska. The peculiar leaves, roughened upon both sides, 

 are figured in cross section. Maxon. 



Williams, R. S., The genus Clasiohryum Doz. and Molk, in 

 America. (The Bryologist. XV. p. 31. March, 1912.) 



The author refers to the recent description of Clastohryiini 

 americaniirn Cardot, founded upon Pringle, 15640 from Mexico, 

 and regards as probably of the same species certain specimens 

 collected by himself in Bolivia and by Mrs. Britton in Jamaica. 

 The species is very distinct from the old world members, which 

 are East Indian. Maxon. 



Maxon, W. R., Notes on the North American species of 

 Phaneyophlebia. (Bull. Torrey bot. Club. XXXIX. p. 23 — 28. January, 

 issued February 10, 1912.) 



Collections of ample material of two species of Phanevophlehia 

 in Panama led to a further revision of the North American 

 species of this genus, in which it became necessary to reduce P. 

 guatenialensis to P. macrosorn. This species, which is fully descri- 

 bed, has a probable continuous distributiou from Guatemala to 

 Panama. A key to the 7 species is provided. Maxon. 



Robinson, W. J.. A taxonomic study ofthe pteridophyta 

 of the Hawaiian Islands. fBuU. Torrey bot. Club. XXXIX. 

 p. 227—248. pl. 18-20. May, issued June 8, 1912.) 

 The author here presents the first part of an extended syste- 

 matic study of the pteridophyta of the Hawaiian Islands, based 

 upon a large amount of herbarium material and a first-hand acquain- 

 tance with the region treated. The introductory portion contains a 

 Short description of the Islands, comments upon the relationship of 

 the fern flora, and notes upon the various collections made and 

 work previously done. The families treated in the present paper 

 are the Salviniaceae, Marsileaceae, Ophioglossaceae, Marattiaceae, 

 Schisaeaceae, Gleicheniaceae , Cyatheaceae and Hymenophyllaceae. 

 Keys are provided for the orders, families, genera and species. The 

 species are not described, but for each one there is given: the type 

 locality, distribution, list of previously published illustrations, and 

 an enumeration of the specimens exarained, with an indication of 

 herbaria in which they are to be found. The following new names 

 appear: Dicranoptevis emarginata (Brack.) W. Robinson {Mertensia 

 emarginata Brack), and D. owhyheyisis (Hook.) W. Robinson [Glei- 

 chenia owhyheyisis Hook.). Maxon. 



Slosson, M., New ferns from tropical America. (Bull. Torrey 

 bot. Club. XXXIX. p. 285—288. pl. 23. June issued July 10, 1912.) 

 Two new species are described and figured: Loxsoniopsis nota- 

 hilis Slosson. from Bolivia, the type being R. S. Williams 1303; 

 and PolypocUum insidiosiim Slosson, from Cuba, the type being 

 Shafer 8043. The former constitutes the third member to be descri- 

 bed in this peculiar genus. The latter species is a diminutive rela- 

 tive of P. tvifiivcatiim L. Maxon. 



