Jlarbtda. Mil SCI. 371 



in n, sliort point ; iioricliictiiil loaves stronjjly cnrvod and niar<,'ins rovoluto : capsulo 

 with simple persistent annulus, and loosely twisted peristome elelt to the base. — 

 J)ot. Zeit. XX. 338. 

 San Jose Valley, J. Bauer. 



H- -1— Peristome once or twice tivisted or less. 



14. B. rigidula, Sehimp. Closely resembling 5. /w^/ax, bnt growing on rocks 

 and stones, witii a iirmer capsule, narrow annulus, and the teeth of the peristome 

 shorter and scarcely at all twisted. — 8yn. Muse. 2 ed. 2()G. Didijmodon rigidulum, 

 Hedw. Muse. Frond, iii. 8, t. 4. Trichostomuin rigiduhivi, Smith; Bruch k Sehimp. 

 1. c., t. 17G; Wilson, 1. c, t. 20. 



On rocks sulijcct to overflow on Ihissian IJivcr, opposite Ukiah {Bolandcr) ; Vancouver Island 

 (Li/al/) ; Euri>pcaii. 



15. B. semitorta, Sulliv. Stems loosely cespitose, 3 or 4 lines high, sub- 

 simple, rooting at base : leaves crowded above, spreading horizontally from an erect 

 clasping base, linear-lanceolate, concave with Hat margins and the firm costa ceasing 

 at the apex : capsule cylindrical, with slender beaked operculum scarcely covered 

 bv the calyptra, narrow annulus, and rather long peristome twisted half-way round. 

 -^Pacif. It. Kcp. iv. 18G, t. 3. 



Near Beniria, Bifjrlmr. 



IG. B. brachyphylla, Sulliv. Stems densely cespitose, 8 to 12 lines high, 

 fastigiately branched, rooting the whole length : leaves dark brownish green, firm 

 and thick, spreading, ovate, shortly and obtusely acuminate, stoutly costate to the 

 ai)ex and the margins recurved ; areolation miiuite, uniform : capsule cylindrical, 

 with obli([uely beaked operculum more than covered by the calyptra, a simple 

 annulus, and the peristome twisted scarcely half-way round. — Pacif. II. Hep. iv. 

 18G, t. 2. 



Near Ijcnicia, with tlie last, Bi(jclov). 



1 7. B. purpurea, IMuell. Stems very short, forming small very rigid purple 

 mats : leaves few, lirm, shortly lanceolate from an oblong base, concave, with 

 .strongly revolute margins and stout cxcurrent costa : capsule minute, elliptical, with 

 conical operculum as long as the capsule, a narrow persistent annulus, and scarcely 

 twisted elongated i)eristome : calyi>tra reaching the base of the capsule. — Flora, 

 Iviii. 78 (1875). 



With B. viirscr^is, ujion rocks near Oakland, Bohindcr. 



18. B. vinealis, Bridel. More densely ces])itose and less l)rown i\\nw D. fallax, 

 with more crowded longer and more acuminate leaves, somewhat flaccid and crisjied, 

 when dry, the margins less revolute and nearly flat above : capsule thicker and 

 more elliptical, with shorter operculum, a rather broad double annulus, and a shorter 

 nearly white peristome upon a broader basilar membrane, twisted once or 1^ times. 

 — Druch k Sehimp. I. c, t. 148; Sulliv. <t Lesq. 1. c, n. 90" (2 ed. n. 130, 131). 



Around San Fraiu;isco, on rocks and stones near the hay, very common and vi\\\n\\\(i {Bolander) ; 

 Oakland and Sonora, Biijelow. Connnon also in Europe. Some of the following species are 

 scarcely distinct. 



19. B. artocarpa, Lesq. Densely cespitose: stems slender, short, subsimple : 

 lower leaves short, lanceolate from an ovate base or short-subulate, the stout costa 

 running to the apex; the upper longer and more narrowly lanceolate-subulate; 

 ])ericha'tial leaves broader, clasi)ing at base, crowded above, erect; areolation at 

 base looser and chlorophyllose : capsule ovate-cylindrical, short, slender, contracted 

 at the mouth, with a long-beaked curved operculum and broad simple persistent 

 annulus: teeth slender, whitish, once twisted. — Trans. Amer. Phil. Soc. xiii. 4; 

 Sulliv. & Lesq. 1. c, n. 133. 



On Monte Diablo, and northward to Ukiali, Bulandcr. 



