180 



MUSCI. Uriniinid. 



1 3. Gr. calyptrata, Tlixjk. Densely tufted, cnnescent : leaves somewhat crowded, 

 erect and subapinessetl, oljlong-lanceolate, somewhat foldetl-carinate, margin scarcely 

 recurved, the upper with a long smootliish hair ; pericluetial leaves longer and 

 broader: capsule on a slightly exserted pedicel, cylinch'ic-oblong, brown, wholly 

 covered by the calyptra : oi)erculum conic-rostrate; ainudiis narrow: teeth purple, 

 Ijifid. — Drum. ]\lusc. Am. n. GO. Cuembella cab/ptrata, iMuell. Muse. Frond, i. 775. 



On iliy rock.s lu-ar ("avson City {Watson); in the Itocky iMountaius IVoni liriti.-,li Aiiieiica 

 {Drunimund) to New Mexico. 



* * Cali/ptra cucul/afe, /abed at base: dlcecious. 



14. Gr. elongata, Kaulf. .Stem.s erect, very slender, naked at ba.se, several 

 times branched, torming tumid blackened tutts : leaves rather lirm, the lower 

 lanceolate and blunt, the upper lanceolate from an ovate-oblong base, the apex 

 hyaline or shortly setose, carinate-concavo, tlie margin slightly thickened above : 

 calyptra obli(pie, long-beaked, 5-lobed : cajjsule minute, exserted, elliptic, yellowish, 

 Avitli short obtuse operculum and narrow annulus : teeth subentire, rellexed on 

 drying. — Eruch it 8chimp. 1. c, t. 251). 



In the Yoseniite Valley (Z>r. B. JV. James) ; alpine regions of Europe. 



* * * Calyptra cucuUate, entire: dhvcioiis. 



15. G. montana, Ihuch k Hchimp. Very much like 0. ovata, but less rigid, 

 the leaves u liltie broader and tipped with a longer voughisli hair ; calyptra long- 

 beaked, reaching below the middle of the scarcely exserted cai)stde ; annulus nearly 

 wanting; operculum long-beaked, usually deciduous with the calyptra. — Ihyol. 

 Eur. t. 250 ; SuUiv. & Lescj. Muse. Am.-lJor. Exsicc. 2 ed. n. 215. 



Near San Francisco, on Monte Diahlo, and on Mono Tass at 7,000 to 8,000 feet altitude {Bolan- 

 dcr); in mountains, Nevada (//'((/w/i) I Western Huiuiie. 



23, RHACOMITRIUM, Ihidel. 

 Taller perennials, broadly cespitose, usually ui)on rocks, dichotomously branched. 

 Leaves very densely crowded, subequal, long-lanceolate, blunt or setosely tipped, 

 channelled with recurved margins ; basal areolation linear and sinuous. Flowers 

 dioecious. Calyptra conic-mitriform, lobed at base, with a straight dark more or 

 less roughened beak. Capsule oblong-cylindric, on a rarely curved pedicel, with a 

 narrow beaked operculum and broad compouml annulus. I'eristome elongated, 

 tipou a short basal membrane, purple, the teeth irregidarly 2 - 3-cleft at least to the 

 middle, or to the base with subequal filiform divisions, erect or nearly so when dry. 



A genus variously limited, of 30 or 40 species, many antarctic; often included in Grimmia. 

 § 1. liegidarhj dlchotomona: leaves hUnit ; areolation minute and rounded, at 

 base linear and veri/ sinuous; costa narrowh/ 2-u'lnf/ed on the back: 

 pedicel arcuate: operculum conlc-rostrate : teeth bljid nearlij to the base. 



CAMPYLOnUVPTOUUX. 



K. PATKNS, Schimp. Stems 2 to 4 inches long, naked bdow : leaves spreading : pedicel rather 

 short : capsule pah- brown, oval, furrowed wlien dry. — Syn. Miisc. 2 ed. 272. drimmia pulcns 

 Rrueh & Schimp. Bryol. Eur. t. 246; Wilson, Bryol. Brit. t. 19. Between Fort Coivdie and 

 tlie Rocky I\bnuitains, Washington Territory, Drttmmond, Lynll. 

 §2. Blchotomous, fastlf/latel'j branched: leaves blunt; apical areolation quad-^ 



rate or oval, the basal very narrow and sinuous: capsule erect : beak of 



calyptra rou(jIi,ofoperctduni aclcular : teeth bifid to or below the middle. 



— Dryptodux. 

 1. R. aciculare, P.ridel. Loosely cespitose, dark green, 1 to 3 inclniS high : 

 leaves secund or spreading, widely lanceol.ite or ovate-oblong, obtuse, entire or 



