6 Britton: Mosses of Danish West Indies 



15. Bryum Cruegeri Hampe; C. Mull. Syn. 1: 300. 1849 



Dioicous plants bright yellowish green, shining gregarious in 

 loose soil in gravelly bed of stream; stems short, less than I cm. 

 high, upper part of stem erect, base decumbent red and radiculose; 

 leaves light yellowish green, glossy, spreading, lanceolate, acute 

 or acuminate, 2 mm. long X 0.35-0.5 mm. broad; costa narrow, 

 ending in the carinate, mucronate apex, margins entire below 

 slightly serrulate at apex, not bordered nor revolute; cells hex- 

 agonal 54-108 n long X 13 m broad, a few alar, shorter and 

 broader, square or oblong, not decurrent; sterile but often 

 propagating by gemmae. 



St. Thomas: in bed of stream at Tutu, 422. 



Compared with Chas. Wright 63 from Cuba, distributed as 

 B. ovalijoliiim Sull., the leaves are slightly narrower and less con- 

 cave, but they are evidently closely related species and both 

 belong with the group of tropical American species having glossy 

 leaves, and flaccid red stems, resembling a Pohlia. They grow 

 mostly along streams and form a closely related group, of which 

 B. ripense C. Mull, from Jamaica is also a member. 



16. Philonotis sphaerocarpa (Sw.) Brid. Bryol. Univ. 2: 25. 



1827 



St. Thomas: moist banks, Bonne Resolution 421; Crown 

 Estate, 450 m. alt., 1368, 1458. 



17. Philonotis tenella (C. Mull.) Jaeger, Adumb. 1: 541. 



1873-1874 

 St. Jan: on wet banks, near Corallenburg, Breutel, 1841; 

 Bethania, Britton & Skafer 208. Tortola: near Roadtown, 

 325 m. alt., Britton & Shafer 773. 



18. Pireella cymbifolia (Sull.) Cardot, Rev. Bryol. 40: 17. 



1913 

 St. Jan: on wet rock near Bethania, Britton & Shafer 359. 



19. Pterobryum angustifolium (C. Mull.) Mitt. Jour. Linn. 



Soc. Bot. 12: 426. 1869 



Tortola: High Bush, Eggers 3240a, December, 1887; Sage 

 Mt., W. C. Fishlock 85, May, 1913. 



