4 Britton: Mosses of Danish West Indies 



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

 Britton &' Shafer 2og; Rosenberg and Bordeaux, Britton & Shafer 

 288, 534, 56Q. St. Thomas: on the ground. Water Island, 755; 

 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 df Shafer 1039 



II. 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 i 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 ^t long by 8 /x wide, upper cells obscure up to 5 ;u 

 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 36/. 



12. 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 inroUed 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 /i 

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

 surface; lower cells hyaline, oblong, 10-12 rows, up to 40 /x 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, 



