4 Britton: Mosses of Danish West Indies 



St. Jan: Emaus, Brentel (type locality); wet banks, Bethania, 

 Britton & Shafer 209; Rosenberg and Bordeaux, Britton & Shafer 

 288, 534, 569. St. Thomas: on the ground, Water Island, 155; 

 roadside banks, summit of ridge, Bonne Resolution, 1336; 

 Bordeaux, 1384; St. Peter, 1258; top of Flag Hill, Fitch & Shafer 

 1494. Tortola: Peter Island, Britton & Shafer 860. Anagada: 

 without definite locality, Britton & Shafer 1039 



11. Hyophila uliginosa E. G. Britton sp. nov. 



Plants attached to rocks in stream, gregarious and matted 

 together by fresh water algae, soft and flaccid when moist; stems 

 simple, about 5 mm. high, branching at apex; leaves much dis- 

 colored and clogged with mud at base, green and spreading at 

 summit of stems, about 1 mm. long; base hyaline and oblong; 

 apex Ungulate and slightly carinate, apiculate; margins plane, 

 entire or rarely denticulate with a few hyaline teeth at apex; 

 costa stout, papillose on back and smooth above ending in the 

 cuspidate point, in section showing one row of ducts and two 

 small bands of stereid cells; basal cells hyaline, oblong or square, 

 up to 16 fj. long by 8jii wide, upper cells obscure up to 5 ^ 

 in diameter, green and densely papillose, with several minute 

 papillae on each surface; dioicous; flowers and fruit unknown; 

 propagating by septate gemmae borne in clusters on brown fila- 

 ments in the axils of the leaves. [Plate i, fig. 1-6.] 



Type locality: — St. Jan: Bethania, Britton & Shafer 367. 



\2. Phascum sessile E. G. Britton sp. nov. 



Plants annuaj(?), gregarious in loose bare earth, on banks; stems 

 simple, or branching at base, with several rosettes from one root, 

 1-2 mm. high; leaves inrolled with conspicuous yellowish-white 

 costa when dry, bright green in color and spreading when moist, 

 few, 8-12, oblong at base, obovate above, 1-1.25 mm. long by 

 0.4-0.5 mm. wide; costa percurrent or excurrent into a short 

 cuspidate point, terete and smooth on back, with a narrow dorsal 

 stereid band and 2-3 rows of large ducts; margins entire or 

 finely crenulate and papillose; upper cells hexagonal, up to 13 ju 

 in diameter, densely chlorophyllose with 1-3 papillae on each 

 surface; lower cells hyaline, oblong, 10-12 rows, up to 40 ju long, 

 not papillose, occasionally curved and yellow and slightly auricu- 

 late at basal angles; paroicous, antheridia few, with paraphyses, in 

 small buds below or near the archegonia, of which occasionally 

 several are fertilized making 2-3 fruits on one plant; calyptra 

 small, conic, split, slightly papillose at apex; capsule immersed, 



