MUSCI. 385 



13. O. Kingianum, Lesq. Stems sparingly branched, an inch high, in dull 

 green tufts, brown below : leaves erect-spreading when moist, ovate-lanceolate, 

 obtusely acute, revolute in the middle, carinate, the costa ceasing below the apex, 

 granulose-papillose above : monoecious, the male buds axillary, slender : calyptra 

 sparingly hairy, covering the brown smooth oval capsule, which is exserted upon a 

 pedicel 2 or 3 lines long, long-cylindric when dry: teeth in pairs, 9- 10-jointed, 

 punctate, erect when dry, longer than the 8 cilia. Mem. Calif. Acad. i. 18; Sulliv. 

 Icon. Muse. Suppl. 74, t. 55. 0. Icevigatum, James, Bot. King Exp. 402, not Zett. 



On rocks near the Yosemite Falls (Bolander) ; Pah-Ute Mountains, Nevada ( Watson). SiU- 

 livant in his manuscript notes refers this species to 0. spcciosum. 



14. O. pulchellum, Smith. Stems loosely cespitose, about 3 lines high, very 

 slender : leaves pale green, soft, spreading, lax and slightly crisped when dry, linear- 

 lanceolate, acuminate, margins revolute below, very minutely punctate and revolute 

 toward the apex : male flowers terminal : calyptra campanulate, naked, pale yellow 

 with a brown point : capsule exserted on a rather long pedicel, small, oblong with 

 a short collum, yellowish, indistinctly 8-striate, becoming sulcate below the mouth 

 and contracted: teeth red-orange, rather long, in pairs, reflexed when dry, with 16 

 equal filiform cilia. Engl. Bot. t. 1787; Bruch & Schimp. 1. c., t. 223; Wilson, 

 1. c., t. 21 ; Berkeley, 1. c. tig. 7. 0. Columbicum, Mitten, Journ. Linn. Soc. viii. 24? 



Clear Lake and Eureka (Bolander) ; Vancouver Island ; Northern Europe. Peristome some- 

 what paler and pedicel longer than in the European type. O. Columbicum, from Vancouver 

 Island, is described as having but 8 cilia and the calyptra rugose, at the apex. 



0. CONSIMILE, Mitt. 1. c. (Sulliv. Icon. Muse. Suppl. 59, t. 43), also from Vancouver Island, is 

 very similar but with shorter capsule, the calyptra somewhat hairy, and the cilia only 8. 



15. O. Lyellii, Hook. & Tayl. Stems loosely tufted, 2 to 4 inches long, much 

 branched : leaves crowded, flexuose-squarrose, when dry nearly erect and somewhat 

 twisted, linear-lanceolate, acute, margins flat, beset with red clavate hairs or papillae : 

 dioecious : calyptra large, moderately hairy, conic-campanulate : capsule emergent, 

 ovate upon a long collum, faintly 8-striate, elongated and deeply striate when dry, 

 yellowish brown : teeth whitish, reflexed when dry; cilia 16, red, slightly erose on 

 the hyaline margin. Muse. Brit. t. 22; Bruch & Schimp. I.e., t. 221; Wilson, 

 1. c., t. 22 ; Sulliv. & Lesq. Muse. Am.-Bor. Exsicc. 2 ed. 184, 185. 0. papillosum, 

 Hampe, Linnaea, xxx. 458. 



On trees, California and Oregon, common ; Europe. 



26. ENCALYPTA, Schreb. 



Somewhat cespitose branching perennials, on the ground or rocks, the stem 

 rhizoid-bearing the whole length. Leaves 5-ranked, dull green, linear to spatulate, 

 densely covered above with cleft papillae; areolation close hexagonal toward the 

 apex, long-rectangular and hyaline at base. Inflorescence monoecious (rarely dioe- 

 cious), bud-like. Calyptra very large, longer than the capsule, cylindric-campanulate, 

 very smooth, with long slender beak. Capsule erect upon a long pedicel, oblong or 

 cylindric, with a short collum ; operculum beaked like the calyptra. Peristome 

 very variable, single, of 16 teeth (in our species), or double, much as in Orthotrichum, 

 sometimes wanting. 



A genus of about 20 species, largely European. Resembling in habit the larger species of 

 Barbula, but readily distinguished by the calyptra. 



* Peristome very fugacious and fragile, or often wanting. 



1. E. vulgaris, lledw. Stems scarcely 6 lines long: leaves spreading, lingu- 

 late, apiculate, twisting when dry, the reddish costa ceasing below the apex or 

 slightly excurrent : calyptra entire at base, yellowish green : capsule ovate-cylindrical, 



