Bryophyten. 195 



Cooke (Mastigobrywn Didericianum var. emarginatum Steph.). 



With a Single exception all of the species treaied are illustrated. 



Maxon. 



Evans. A. W 2 , Hepaticae of Porto Rico, X: Cololejennea, 

 Leptocolea, and Aphanolejeunea. (Bull, of the Torrey bot. Club. 

 XXXVIII. p. 251-286. pl. 11 — 12. June, 1911.) 



There are here described 2 new genera, Leptocolea (Spruce) 

 Evans and Aphanolejeuna Evans, and the following new species: 

 Leptocolea planifolia Evans, Aphanolejeunea exigua Evans, and A. 

 crenata Evans. The following „new combinations" occur: Cololejennea 

 myriocarpa (Nees & Mont.) Evans {Lejeunea myriocarpa Nees & Mont.); 

 Leptocolea micrandroecia (Spruce) Evans (Lejeunea micrandroecia 

 Spruce); Leptocolea scabrifolia (Gottsche) Evans (Lejeunea scabrifolia 

 Gottsche); Leptocolea Goebelii (Gottsche) Evans (Lejeunea Goebelii 



Gottsche); Leptocolea ceatocarpa (Angstr.) Evans (Lejeunea ceatocarpa 



Angstr.); Leptocolea lanciloba (Steph.) Evans (Cololejeunea lanciloba 

 Steph.); Leptocolea cardiocavpa (Mont.) Evans (Lejeunea cardiocarpa 

 Mont.): Leptocolea Jooriana (Aust.) Evans (Lejeunea Jooria na (Aust.); 

 Leptocolea cuneifolia (Steph.) Evans (Lejeunea cuneifolia Steph.) '^Lep- 

 tocolea ovalifolia (Evans) Evans (Cololejeunea ovalifolia Evans, 1900) ; 

 Aphanolejeunea microscopica (Ta}'l.) Evans (Jungermannia micro- 

 scopica Tay!.).; and A. sicaefolia (Gottsche) Evans (Lejeunea sicaefolia 

 Gottsche). The type of the genus Leptocolea is L. micrandroecia; 

 and of the genus Aphanolejeunea the type is A. microscopica. The 

 paper concludes with a discussion (illustrated by text figures) of the 

 gemmae of Cololejeunea, Leptocolea and Aphanolejeunea. Maxon. 



Evans, A. W., The Hepaticae of the Bahama Islands. (Bull. 

 Torrey bot. Club. XXXVIII. p. 205—222. pl. 9 and 10. May, 1911; 

 issued June 15, 1911.) 



"Previous to 1903 no Hepaticae had been reported from the 

 Bahama Islands. In that year a list of 8 species was published by 

 Coker from determinations made by the writer." The basis of the 

 present enumeration is mainly material collected by several expedi- 

 tions sent out by the New York Botanical Garden during the period 

 1904 — 1910. A total of 34 species is now listed. Of these the following 

 are here described as new: Rectolejeunea Brittoniae Evans, the type 

 being from New Providence, E. G. Britton 692; Ceratolejeunea 

 integrifolia Evans, the type from New Providence, E. G. Britton 

 721. A Single new combination is published: Taxilejeunea obtusan- 

 gula (Spruce) Evans (Lejeunea obtusangula Spruce). For the other 

 species there are numerous references to recent papers by the writer, 

 in which these have been critically discussed. 



As to relationships the author's comment is, in part, as follows: 

 „The preponderance of the Jubulae indicates the tropical character 

 of the hepatic flora. All but 5 of the species, in fact, are definitely 

 known from the Antilles, and all but 10 from Florida, numbers 



that will doubtless be reduced upon further exploration It 



seems rather surprising at first that only 5 of the Bahamian species 

 are known from Bermuda. The flora of the more northern island. 

 however, is much more closely related to that of the northeastern 

 United States, even though it does contain certain subtropical ele- 

 ments." Maxon. 



