BARNES NORTH AMERICAN MOSSES. 



not forming distinctly delimited auricles. Ren. ibid. 388. -Packs Harbor, 

 Labrador. 



558. Hypunm fluitans conflatnm C. M. & Kindb. Stem slender, sub- 

 filiform, distinctly pinnate, not radiculose: leaves small, concave, distant, 

 denticulate all around; stem leaves decurrent, from a broad ovate base 

 suddenly narrowed into a very short, subulate-filiform straight point; alar 

 cells very large, hyaline or faintly yellowish, others nearly uniform, oblong- 

 lanceolate, conflate; costa pale yellow, vanishing in the acumen; branch 

 leaves narrower, oblong-lanceolate, more or less short acuminate, curved 

 or straight: capsule very small, arcuate, contracted below mouth: dioicous. 

 Mac. Cat. 230. In pools and bogs: British Columbia; Ottawa, Ont.; 

 Labrador. 



559. Hypnum Moseri Kindb. Differs from H. uncinatum in leaves 

 not striate, but sometimes recurved at base; costa faint, often fail- 

 ing: differs from all other Harpidia in stem densely radiculose. Mac. 

 Cat. 229. On bases and trunks of poplar trees: New Brunswick; New- 

 foundland. 



560. Hypnum filicinum aciculinnm C. M. & Kindb. Costa ex- 

 current to a rigid point. Mac. Cat. 231. On wet rocks: British Co- 

 lumbia. 



561. Hypnum decipiens (DeNot.) Kindb. Monoicous: habit of Hyp- 

 num commutatum or filicinum; loosely interwoven, with green inno- 

 vations, scarcely shining; stems 4 cm., paraphyllia present, pinnate; 

 branches simple, slender, spreading; stem leaves sub-squarrose, broadly 

 cordate-deltoid, short cuspidate, decurrent, plicatulate; margin reflexed 

 below, denticulate all around especially at apex; costa strong, vanishing 

 below apex; branch leaves small, ovate-acuminate, secund falcate; costa 

 reaching beyond middle; cells short, sub-rhombic to oblong, strikingly 

 papillose especially on lower face, basal on desecurrent, elongate, hyaline: 

 perichaetial leaves membranaceous, pallescent, appressed, inner slenderly 

 subulate, fimbriate: capsule on a long seta, thick-clavate from an erect 

 base, cernuous, brown. Thuidium decipiens DeNot. Epil. 233. 1869. 

 On rocks: Rocky Mts.; Br. Columbia; Vancouver Is. 



562. Hypnum chloropterum C. M. & Kindb. Tufts laxly cohering, 

 with few rhizoids, whitish or bright green, not shining: stem more or less 

 densely pinnate, rigid: stem leaves small, patent also in dry state, loosely 

 and long-decurrent, auricled, papillose at back, distinctly but faintly pli- 

 cate, concave, broad-ovate, suddenly narrowed to a short (in the dry state 

 twisted) acumen; borders broadly recurved below, sometimes to middle, 

 denticulate all around from apex to auricles; areolation lax, more or less 

 chlorophyllose, alar cells larger, sub-quadrate, numerous, others oval ob- 

 long, only the uppermost narrow; costa distinct, reaching above middle;. 



