Bryum. MUSCI. 391 



crowded, longer, narrowly lanceolate, strongly denticulate ; perigonial leaves broadly 

 ovate with a long flexuose acumination, nearly entire : capsule inclined or horizontal, 

 short-ovate, attenuate into a rather long collum ; operculum conic, apiculate ; annulus 

 compound : outer teeth broad and short, the inner longer with rudimentary ciliolse 

 in pairs or wholly wanting. Mem. Calif. Acad. i. 22. 

 Foot of Mount Dana, Bolandcr. 



* * Capsule broader with the collum short : ciliolce perfect. 

 -i Monoecious: anther idia axillary. 



4. B. nutans, Schreb. 8tems \ to 2 inches long, simple or branching above : 

 lower leaves ovate-lanceolate, entire, the upper gradually larger, linear-lanceolate and 

 serrate above : capsule mostly pendulous, pyriform or oblong-ovate, at length reddish- 

 brown ; opercnlnm apiculate ; annulus broad : teeth orange-red, with pale filiform 

 tips ; inner cilia and ciliola? as long, the former broadly fissured. Smith, Engl. 

 Hot. t. 1240; Bruch & Schimp. 1. c., t. 343; Wilson, 1. c., t. 29. Webera nutans, 

 Hedw. Muse. Frond, t. 4. 



Var. bicolor, Bruch &, Schimp. 1. c., t. 347. Perichoetial leaves erect, shorter : 

 capsule shorter, thicker, variegated : leaves of the sterile branches ovate, acuminate, 

 the costa excurrent. Webera bicolor, Hoppe & Hornsch. 



Foot of Mount Dana (Bolandcr) ; from Arctic America to Utah, Colorado and the Atlantic 

 States. A common and very variable species, found also in Europe, Asia and South America. 

 The variety was collected on the banks of King's River, at 4,000 feet altitude (Brewer), and oil 

 Mount Dana (Bolandcr) ; likewise European. 



5. B. cucullatum, Schwaegr. ' Alpine, and like alpine forms of the last species : 

 distinguished by its broader, softer and scarcely shining leaves, the thicker capsule 

 with small orifice (the margin reflexed when dry), and the smaller peristome, the 

 inner less developed with short and fugacious ciliolse. Suppl. i*. 94, t. 68 ; Bruch 

 & Schimp. 1. c., t. 343 ; Fl. Dan. xv, t. 2683. Webera cucullata, Schimp. 



On Mount Dana (Bolandcr) ; White Mountains, New Hampshire ; mountains of Europe. 



Flowers dioecious, or also bisexual in n. 6. 

 H- Leaves narrow, the upper linear-lanceolate. 



6. B. cnidum, Schreb. Loosely cespitose, glaucous-green ; stems 1 or 2 inches 

 high, purple : lower leaves ovate-lanceolate, entire, the upper crowded, linear-lanceo- 

 late, flexuose-spreading, remotely serrate above, all shining and transparent : capsule 

 rarely pendulous, oblong or ventricose, often gibbous : operculum convex, more or less 

 apiculate : peristome pale yellow ; ciliolae in pairs or threes. Engl. Bot. t. 1 604 ; 

 Bruch & Schimp. 1. c., t. 348 ; Wilson, 1. c., t. 28; Fl. Dan. t. 2682. Mnium crudum, 

 Hedw. Muse. Frond, i. 99, t. 37. Webera cruda, Schimp. 



Around Clear Lake and in the Calaveras Grove (Bolandcr) ; East Humboldt Mountains, 

 Nevada ( Watson) ; and from subarctic America to Utah, Colorado and the northern Atlantic 

 States. Also in Central America and Mexico, Patagonia and Europe. 



H- -H- Leaves broader, the upper ovate-lanceolate. 



7. B. commutatum. Cespitose, bright green, reddish brown below ; stems an 

 inch high or more when dry, leaves shining, rather firm, erect-spreading, imbricate, 

 the lower ovate or ovate-lanceolate, the upper gradually larger, oblong- to linear- 

 lanceolate, concave with reflexed margins, scarcely decurrent, the purplish costa 

 ceasing at or near the serrulate apex : male flowers with axillary antheridia and 

 numerous paraphyses : capsule inclined or subpendulous, slightly incurved, brownish ; 

 operculum obtuse : teeth large, yellow, the inner pale, with gaping fissures and 

 ciliolse in pairs or threes. Bryum Ludwigii, Bruch & Schimp. 1. c., t. 354, not 

 Sprengel. Webera commutata, Schimp. Syn. 2 ed. 403. 



On Mount Dana, at 9-10,000 feet altitude (Bolandcr); Cascade Mountains, Washington 

 Territory (Lyall) ; Europe. 



