372 MUSCI. Barhula. 



20. B. flexifolia, Hampe. Dicjliii^miislied fioiu the last ))y the more revulutc 

 leaves, S(puu'iujic-relli;xi!(l wlion wi;t, ciispctl \\\w\\ dry, tlio dark red capsule suiiie- 

 wliat narrower and wilha lonj^er operodiuii, and by the Itui^^er red ami mure twisted 

 l>eristume. — Linuiea, xxx. 45G ; Lesij. 1. c.; ISulliv. it l^esij. 1. e., ii. 132. 



On sand and boulders, near San Francisco, with the last, Bolandcr, Bauer. 



21. B. virescens, Lesq. 1. c. Intermediate between the last and B. semitoiUi, 

 distiuguislieil Irum the one by the mneh looser distinct oval areolation, and from 

 JJ. semitorta by the long(!r leaves with margins revolute to the apex, and by the 

 longer and more twisted peristome upon a broader basilar membrane. — Sulliv. ik 

 Lesq. 1. c., n. 134. 



On rocks at Redwood and Oakhuid, BoJandcr. 



22. B. Beecheyi, Lesq. INls. Stems stout, .sulicespitose, branching, \ to 1 inch 

 high, brownish yellow : leaves loosely imbricated, open-erect, or appre.ssed and 

 slightly tortuous when dry, ovate-lanceolate with revolute margins and strong 

 excurrent costa : capsule large, oblong, reddish, on a straight reddisli pedicel a half- 

 inch long, with erect pointed operculum half as long as the capsule, and a double 

 white annulus : peristome red, twice twisted, on a short membrane. — J>. itisidanu, 

 UeNot. (]); Lesq. Mem. Calif. Acad. i. 11 ; IMitten, Journ. Linn. 8oc. viii. 27. 



On gravelly soil, near the Big Trees (Bolandcr) ; also collected by Copt. Bccchaj. 



* * Leaves hrujht green or yeUowlsh, twhted and Inrurrcd when dry : j^erlstome 



very long, jmi'P^c, atronyly twiated. 



23. B. convoluta, Hedw. Small and slender, in broad flat mats, bright green 

 above : leaves narrowly lanceolate, acute, with Hat margins above the base, and 

 costa ceasing at or below the apex ; pericha;tial leaves sheathing, the inner convolute, 

 blunt, nerveless : capsule narrowly oblong, incurved, upon a long yellow pedicel, 

 Avith conic-sul)ulate operculum and rather broad annulus. — Muse. Frond, i. 86, t. 32 ; 

 Bruch »k Schimp. 1. c, t. 154 ; Fl. Dan. xv, t. 2G14, lig. 2. 



Oakland {Bigclow) ; in gardens at San Francisco, and on burnt logs at Ukiali, Bolandcr. Also 

 in the Alleghanies and throughout Europe. 



§4. Usually somewhat taller: leaves oblong to obovate-spatulate, smooth and 

 hyalhie at base, j)apUh.se and more closely areolate above: capsule usually 

 arcuate, erect on a stout pedicel : peristome upun a long basal tube, much 

 twisted. — Syntiuciua. 



* Leaves acute or blunt, and costa slightly excurrent, croivded above: capsule 



very slender: momvcious. 



24. B. subulata, l^ridel. Stems usually short (3 lines to an inch high), loosely 

 cespitose, sinq)le or branched, rooting at base : leaves obovate- and oblong-si)atulate, 

 entire or serrate at the apex, with Hat margins and sometimes a yellow bonier : cap- 

 sule elongated, cylindrical, brown, on a twisted pedicel, with narrowly conic oper- 

 culum, double annulus, and peristome pale red, tubular half its length or more. — 

 Bruch k Schimp. 1. c, t. IGO. Tortula subulata, Hedw. Spec. Muse. t. 37; Engl. 

 Bot. t. 1101. 



Big Tree Orovo (Bolandcr) ; Western Arizona (Bigchnc) \ Wahsatcli Mountains ( //7(/Ao;i) ; in 

 British America fioni the Hocky Mountains to Canada, and through most of Europe. 



25. B. inermis, Bruch. Leaves firmer than the last, the lower oblong-lanceolate, 

 the upper long-liiH.ar, blunt or very shortly apiculate, with ai)i)ressed-rellexed mar- 

 gins and no border, minutely papillose both sides, olive or yellowish : capsule more 

 narrowly cylindrical. — Bruch & Schimp. 1. c, t. ICl (var. y), and t. 1G7. Tortula 

 inermis, Mont. ; DeXot. Muse. Ital. i. 44, t. 20. 



r.ase of mountains west of the Colorado llivcr {Ili'jcluir), and collected also by Bolandcr. 

 Southern Europe. 



