390 MUSCI. Bnjum. 



t. 28; Berkeley, Eiit. Moss. t. 18, fig. 3. Bryum pi/ri/onne, Linn.; Hedw. Hist. 

 Muse. t. 3, lig. 13; lUuch it Schiiui). Ihyol. Ear. t. 3;ir) ; 1<1. Dun. t. 2380, fig. 2. 



At Cajon Puss {Jiiijrloir), ('Icar Liikt! {liitlKudcr), ami (.•(iiniiion in (lii; Siena Nevada ami in tlio 

 mountains noitbwaid and eastward across tlie continent. Also Ireijuent in Euroiie, Asia and 

 Soutli America. 



33. BRYUM, Dill. 

 Cespitose perennials, on the ground or rocks ; stems simple or sparingly innovat- 

 ing near the Howering apex, often with rhizoids the whole length. Leaves in 

 several ranks, the upper larger and more crowded, usually ovate or lanceolate, 

 smooth, the costa mostly percurrent or nearly so, Avith rather large subequal rhombic- 

 or rectangular-hexagonal areolatiou, usually more or less serrate. Male llowers dis- 

 coid or bud-like, with filiform parapliyses. Calyptra narrow, cuoullate, fugacious, 

 smooth. Capsule long-pedicellate, solitary, pyriform or oblong, with long or rather 

 short collura, inclined or pendulous, smooth, mostly annulate ; operculum convex, 

 apiculate or shortly rostellate. Peristome double; outer of IG linear-lanceolate or 

 lanceolate teeth, with sinuous medial line and joints prominent on the inner side, 

 incurved when dry ; the inner a basal membrane;, divided half-way down into cari- 

 nate processes or cilia (sometimes splitting through the keel), alternate with the 

 teeth, and usually with (1 to 3) interposed filiform ciliohe. 



A genua of over 200 species, of which one-half are South American and a fourth European. 

 About 45 species arc found in Nortii America. The section JTcbcra is restored to the rank of 

 a genus by Schimper in the last edition of his Synopsis. 



§ 1. Stems simple or innovating usual! i/ at the base: leatws mostli/ narrowly 

 lanceolate, shining, with elongated hexagonal areolation ; costa ceasing 

 below the apex : cilioUe wanting or imperfect, or filiform and not apj^en- 

 diculate. — Weber.\. (JVehera, lledw.) 



* Capsule narroivlg pi/riforin with long collinn: inner teeth entire or scarcely 

 fissured; cilloloi none or imperfect : fioiuers monuicions in n. 1. 



1. B. polymorphum, Bruch & tSchimp. Loosely cespitose; stems usually 

 very short, simple or rarely branched : upper leaves crowded, spreading, oblung- 

 lanceolate, sharply sermte above, lower margins reiiexed : antheridia hypogynous, 

 axillary : capsule oval-oblong, horizontal or inclined, reddish brown, with bluntly 

 conic opercuhim ami large annulus : outer peristome reddish brown, the inner 

 yellowish, without ciliokc. — Bryol. Eur. t. 344; Wilson, Bryol. Brit. t. 47. 

 Pohlia potymorpha, Iloppe & Ilornsch. Wehei-a 2Joti/inorpha, Schimp. 



On Mount Dana {Buhmdcr) ; Oregon, Ilnll. Tiiroughout Europe ; a very variable species. 



B. LONGICOLLUM, Swaitz, found in the Cascade Mountains of Washington Territory (Lijall), 

 is a taller deep-green species, with broader leaves, shorter colhun, and a bright yellow peristome 

 with more or less developed ciliolae. 



2. B. nudicanle, Lesq. Densely cespitose, brown below, green above ; stem 

 slender, 4 or 5 lines higli, nearly naked to above the middle : leaves crowded, erect, 

 ovate-lanceolate, acute, obsoletcly denticulate above ; the inner pericluctial shorter 

 and denticulale, sometimes with free antheridia in the axils : capsule horizontal or 

 pendulous, usually slightly. unsymmetrical, brown, with depressed conical operculum 

 and compound annulus : inner peristome deeply divided, the narrow elongated teeth 

 narrowly fissured, Avithout ciliohe. — Mem. Calif. Acad. i. 21 ; Sulliv. Icon. Muse. 

 Suppl. 49, t. 34. 



On Mount Dana, at 11,000 feet altitude, Bolandcr. 



3. B. Bolanderi, Lesq. Loosely cespito.se, pale green and shining ; stems 

 short, simple, leafy: lower leaves loosely imbricated, erect, lanceolate; the upper 



