Hypnum.] BRYACE^. 363 



Capsule suberect, oblique or subliorizontal, oval-oblong, some- 

 what incurved or arcuate, short-necked, thin, smooth, rarely 

 sulcate when dry. Teeth of the peristome whitish. — Plagio- 

 thecium, Schimp. 



* Teeth of the peristome distantly articulate; cilia none. 

 -1- Flowers dioecions. 



98. H. latebricola, Lindb. Ms. Plants small, cespitulose, 

 yellowish or bright green, shining ; stems short, very slender, 

 ascending, sparingly branching, radiculose at base : leaves loose, 

 erect-spreading, ovate-lanceolate, long-acuminate, decurrent, very 

 entire, slightly concave, recurved on the borders, obsoletely two- 

 nerved ; areolation long and narrow; inner perichaetial leaves 

 ovate-lanceolate, erect : capsule very small, suberect, oval or 

 oblong, tapering to the base, thin, with a broad orifice and sub- 

 turbinate when dry ; operculum large, apiculate or short-ros- 

 trate from a tumid conical base ; teeth whitish ; segments as 

 long as the teeth, entire, narrow, hyaline-punctate; annulus 

 narrow. — Leslcea latebricola^ Wils. Bryol. Brit. 329, t. 54. 

 Plagiothecium latebricola^ Bruch & Schimp. Bryol. Eur. 

 t. 494 ; Lindb. Faun. Flor. Fenn. ix. 52. H. scitulum^ Aust., 

 Bull. Torr. Club, vi. 44 (?), described from a sterile specimen 

 found mixed with H. Sprucei in Drummond's Mosses of British 

 America (n. 190). 



Hab. Eoots and stumps in swamps; New Jersey and New York 

 (Austin). 



99. H. Passaicense. Differs from the last merely in the 

 abruptly acuminate pericliretial leaves, very entire or erose- 

 denticulate at the apex, and the basilar areolation of the leaves 

 with shorter cells, the cells not inflated nor the leaves decurrent ; 

 stem-leaves triangular-lanceolate and subcanaliculate-concave. — 

 Plagiothecium denticidatum., var. laititm, Aust. Muse. Appal. 

 n. 362. P. Passaicense, Aust., Bull. Torr. Club. v. 24. 



Hab. On rocks, in mountain districts; New Jersey (J.ifsim), sterile; 

 Belleville, Canada (Macoun), fruiting, 



Tlie autlior remarlcs that it resembles H. pulchellum, and H. latebri- 

 cola, but that it is smaller than either and the smallest of the subgenus. 

 The characters indicated as specific, or as different from those of H. late- 

 bricola, are not sufficiently marked, as in this last species the base of the 

 leaves is often truncate instead of decurrent, and the basal cells not in- 

 flated but only quadrate. 



