Mnium. MUSCI. 397 



margin more narrowly bordered, and the areolation more loose. B. Schleicheri, 

 Schwaegr. Suppl. t. 73 ; Schimp. Syn. Muse. 2 ed. 462. 



Wet meadows, Calaveras Grove (Bolander) ; mountains of Nevada and Utah ( Watson) ; Galton 

 Mountains (Lyall) ; Rocky Mountains of British America to Colorado and the northern Atlantic 

 States ; Europe and Asia. The variety, which Schimper now separates as distinct, in the moun- 

 tains from the Sierra Nevada to Colorado. 



34. MNIUM, Linn. 



Larger, with simple or rarely divided annual naked or tomentose stems, perpetuated 

 by basal innovations or stolons. Leaves in several ranks, the lower usually remote, 

 minute, at the flowering summit much larger and rosulate, shining, broadly obovate 

 to oblong from a narrow rarely subclasping or decurrent base, with stout costa and 

 the usually thickened bordered margin entire or mostly serrate with 1 to 3 rows of 

 firm teeth ; areolation round-hexagonal, at base hexagonal-oblong and paler. Flowers 

 dioecious or bisexual, the male discoid with very numerous axillary antheridia and 

 clavate paraphyses. Calyptra cucullate, very narrow, smooth, fugaceous. Capsules 

 inclined or pendulous on long usually strict often clustered pedicels, ovate or oblong 

 or subglobose, with short abrupt colluni ; operculum convex, mamillate or more or 

 less beaked ; annulus narrow. Peristome as in Bryum, the inner membrane reaching 

 to the middle of the paler outer teeth ; ciliolse present in twos or threes, filiform, 

 not appendiculate. 



About 25 species are known, almost entirely European and North American. 



* Flowers dioeciotis. 

 H Leaves serrate. 



1. M. affine, Bland. Broadly cespitose; stolons often very long; stems 1 to 3 

 inches high : leaves spreading, recurved and crisped when dry, the lower round- 

 obovate, the middle obovate-oblong, the upper large, oblong-elliptic or lingulate, all 

 long-decurrent and more or less abruptly acuminate and shortly cuspidate with the 

 excurrent costa ; border narrow, yellowish, acutely toothed : capsule (often 2 to 4 

 from the same flower) oblong, glaucous-green, at length brownish ; operculum 

 apiculate, yellow. Bruch& Schiinp. Bryol. Eur. t. 397 ; Wilson, Bryol. Brit. t. 51; 

 Berkeley, Brit. Moss. t. 17, fig. 2. 



Var. elatum, Schimp. More densely cespitose, taller and more slender, with 

 erect stolons often exceeding the capsules : leaves with a pale border, the teeth more 

 remote and shorter : capsule usually solitary and shorter. Syn. 2 ed. 476. M. 

 iiudgne, Mitt, in Hook. Journ. Bot. viii. 230 ; Sulliv. Icon. Muse. Suppl. 53, t. 37. 



On stream banks in Devil's Canon (Bolander) ; East Humboldt Mountains, Nevada ( Watson) ; 

 Puget Sound and north to Sitka, and frequent in Canada and the Atlantic States ; Europe. The 

 variety in swampy places, near Clear Lake (Bolander) ; British Columbia, and in Europe. 



2. M. Menziesii, Muell. Stems erect, 3 inches high or more, strict, with 

 numerous spreading branches (an inch long) at the summit : leaves appressed, the 

 lower remote and scale-like, the upper and those on the branches lanceolate, acute, 

 somewhat concave, costate to the apex, not bordered, the margin and nerve upon 

 the back acutely serrate ; perichretial leaves long-acuminate with excurrent costa, 

 serrate only at the apex : pedicels several or solitary ; capsule cylindric-oval, pen- 

 dulous, at length contracted below the broad mouth ; operculum obtuse. Syn. 

 Muse. Frond, i. 177 ; Sulliv. & Lesq. Muse. Am.-Bor. Exsicc. 2 ed. n. 306. Hypnum 

 acanthoneuron, Schwaegr. Suppl. t. 258. Bri/um Menziesii, Hook. Bot. Misc. i. 36, 

 t. 19. Rhizogonium acauthoneuron, Muell. in Bot. Zeit. v. 803. 



On shaded rocks and creek banks in the Coast Ranges (Bigelow, Bolander) ; at Tort Discovery 

 and Puget Sound, Washington Territory, Mcnzics, Scouler, Pickering. 



