370 MUSCI. BarbuUi. 



7. B. Vahliana, Schultz. Resembling the last : leaves more oblong, opaque 

 with a closer areolation above, the margins rarely reflexed, strongly crenulate, and 

 costa always excnrreut : capsule elongated, narrow ; annulus broad, compound. 

 Eecens. Barb. 222, t. 34, fig. 31 ; Bruch & Schimp. 1. c., t. 157. 



In the Coast Eanges, at Cajon Pass (Bigeloiu) and on Monte Diablo, Bolcmder. Also in "Western 

 Europe, rather rare. 



++ ++ Inflorescence dimcious. 



8. B. niarginata, Bruch & Schimp. With the habit of the preceding : leaves 

 oblong-lanceolate, obtuse or obtusish, umcronate with the excurrent costa, concave, 

 the margin distinctly thickened : capsule oblong-cylindric, slightly curved, brown, 

 with a rather broad simple annulus: teeth once twisted. Bryol. Eur. t. 158. 

 Tortula marginata, Wilson, Bryol. Brit. 131, t. 43. 



On rocks near San Francisco (Bigelow, Bolander) ; Atlantic States ; Europe and Northern Africa. 



9. B. Bolanderi, Lesq. Stem short, simple or fasciculately branched : upper 

 leaves densely rosulate and reflexed, ligulate or oblong, obtuse or shortly apiculate 

 by the excurrent thick brown nerve, the areolation chlorophyllose above ; inner 

 perichsetial leaves short : capsule dark red, cylindric, on a short reddish pedicel, 

 with beaked operculum and short simple annulus : peristome reddish, twisted. 

 Trans. Amer. Phil. Soc. xiii. 5 ; Sulliv. & Lesq. 1. c., 2 ed. n. 139. 



On rocks near the bay of San Francisco (Bolander) ; Colorado, Hall. 



10. B. amplexa, Lesq. 1. c. Closely resembling the last : leaves softer and 

 more loosely imbricated, longer, obtuse, and nerve not excurrent, the areolatiou 

 pellucid ; inner perichsetial leaA^es elongated, erect, closely embracing the base of 

 the pedicel : capsule shorter and smaller, pale green, with shorter obtuse operculum. 

 Sulliv. & Lesq. 1. c., n. 140. 



Near San Francisco, Bolander, Gibbons. 



11. B. brevipes, Lesq. Stem very short, simple: leaves crowded, lignlate or 

 oblong, obtuse and tipped by the slender excurrent costa, concave and the margin 

 revolute, areolation above close and chlorophyllose : capsule long-cylindrical, slender 

 and somewhat curved ; operculum long-conic : peristome upon a long tubular mem- 

 brane, closely twisted, red. Mem. Calif. Acad. i. 12. 



On mud walls at Mission Dolores, in mats an inch broad or more, and on Russian River divide 

 (Bolander) ; near Carson City, and on rocks in the Trinity Mountains, Nevada, Watson, n. 1391. 



3. Rather taller perennials, with lanceolate leaves (costa not excurrent or 

 slightly so), and long peristome upon a very short basal membrane : flowers 

 dioecious : perichcetium more or less sheathing. TORTULA. 



* leaves often brownish, nearly straight when dry. Species mostly closely 



allied. 



H Peristome several times twisted. 



12. B. fallax, Hedw. Cespitose, | to 1 inch high, brownish green : leaves 

 squarrose, recurved-spreading, twisted when dry, lanceolate or linear-lanceolate, 

 acuminate, carinate, the margin revolute and costa ceasing at the apex or slightly 

 excurrent ; areolation minute, uniform throughout : capsule narrowly ovate-oblong, 

 slightly curved, brown upon a red pedicel, without annulus ; operculum purple, 

 subulate, as long as the capsule : peristome red, upon a very narrow base, very long, 

 twisted closely. Muse. Frond, ii. 66, t. 24; Bruch & Schimp. 1. c., t. 147. 



At Cajon Pass and near San Francisco, Bigelow. Also throughout Europe, very common, 

 growing on the ground. 



13. B. stibfallax, Muell. Much like the last : leaves green, loosely imbricated, 

 rather broadly ovate-lanceolate, with strongly revolute margins, the areolation at 

 base more rectangular and pellucid than above, and the broad stout costa excurrent 



