378 MUSCI. (Irimmia. 



Yoseniite Valley (BohDidcr) ; Colorado River (Bigelow) ; Uinta Mountains {Watson) ; common 

 eastward, from Arctic America to the Atlantic States, and in most quarters of tlie globe. An 

 exceedingly variable species. Var. rivularia, Nees & Ilornsch., a. large form, 2 or JJ inches higli, 

 with ovate-lanceolate obtusibh leaves, and shorter capsule becoming turbinate, is found on wet 

 rocks in Yosemite Valley, Bolmnlcr. 



§ 3. Capsule more or less exserted upon an arcuate pedicel: adi/ptra larger, 

 mostli/ mitriforiu and lobed at base: operculum conic, obtuse or rostrate, 

 deciduous without the columella: leaves all setoscli/ tip2Jed. — Guimmia 

 pru2)er. 



* Cali/ptra cavqyanulate-cucullate : Jlowers vionoecious. 



4. Gr. Jamesii, Austin. In compact heniispliericul tufts : leaves crowded al)Ovo, 

 erect when i\vy, oWong- to ovate-lanceolate, convolute-concave above the middle, 

 tipped with a Avhite scabrous subulate-tilifurm seta, the costa reaching to the apex, 

 areolation at the angles enlarged-tpiatlrate : calyi)tra large, unequally lobed at base : 

 capsule round-oval, slightly exserted upon a slender yellow jjedicel, from yellow 

 becoming red, obconic wlien dry and slightly striate ; operculum very shortly 

 convex-acuminate; annulus obscure: teeth pale red, very simrt, broad, 3 - 'l-clcfl, 

 and much perforated below. — Torr. Bot. Bull. vi. 43. U. orbicularis, James, Bot. 

 King Kxp. 403, not Bruch <t Schimp. 



On dry rocks near Carson ("ity, iratson. AVith the strongly cribrost; peristome of Cvscuiodon, 

 but the calyptra (iicuUate and not jilicate. 



* * Calijptra viitriform and lobed, strai'/ht or oblifjue. 



-t- Floaters nionKcious. 



T). Gr. pulvinata, Smith. Uesendding the last, but less crowded and somewhat 

 paler, A to 1 incli higli : leaves oblong-lanceolate, tlie margin slightly thickened : 

 capsule upon a longer pedicel, distincttly striate, costate wlien dry, firmer, brown ; 

 operculum convex, rostrate ; annulus broader : teeth bright purple, longer, sparingly 

 perforated, unequally bifid. —Engl. Bot. t. 1728; Bruch & Schimp. 1. c, t. 231); 

 Wilson, 1. c, t. 13; Sulliv. & Lescp Muse. Am.-Bor. Exsicc. n. 137''. 



Near Ukiah, on Russian River, and about Clear Lake (Bolaudcr) ; on William's River, Arizona 

 (Biydoiv) ; Hot Spring Mountains, Nevada, and the Uintas ( //^«As(w) ; Fort Colville {Li/all) ; 

 Arctic America {Taylor) ; and widely distiibuted through the Old World. 



-1- -i- Flowers dioecious. 



6. Gr, COntorta, Schimp. Rounded tufts soft, deep green, blackish below : 

 leaves spreading-iuciirved, crisped when dry, lanceolate to linear-sul)ulate, hyaline at 

 the apex or .shortly setose, somewhat folded-carinate, the margin recurved below ; 

 pericluctial leaves 8 or 9, subulate, spreading : capsule nodding upon a somewhat 

 arcuate jiedicel, erect when dry, oval, soft, yellowisli, small : operculum convex- 

 conic, obtuse : annulus broad : teeth orange-red, reflexed wlien dry, bifid to below 

 tlie middle and pt:rforated. — G. uncinata, Kaulf. ; Bruch &l Schimp. 1. c, t. 218. 

 G. incurva, Schwaegr. Suppl. ii. t. 97. 



Big Tree Grove (Bolnndcr) ; alpine regions of Europe. 



7. Cr. Muhlenbeckii, Schimp. Loosely tufted, soft, from green becoming 

 hoary; stems tall, branching: leaves densely crowdcsd, ernct when dry, long- 

 lanceolate, channelled along the very prominent costa, carinate at the apex, witii 

 flat margins, the upper leaves tipped with a rather long very rough hair : capsule 

 exserted upon an arcuate pedicel, somewhat pemlulon.s, oval, smooth, brownish, 

 with a convex apiculate operculum and narrow annulus : teeth reddish purple, erect 

 when dry, entire, rarely slightly bifitl. — G. incurva, Bruch tt Schimp. 1. c, t. 243. 



Mount Diuia, at 10, .''.OO feet altitiidi; {Bolaudcr) ; Alps of Kurope. 



8. Gr. trichophylla, Thev. Looscdy tufted, .soft, yellowish or green ; stems ] 

 to 1 inch long : leaves spreading, incurved when <lry, obluiig lanceolate;, atteiiuatt; to 



