Barbida.] BRTACE^. 127 



31. B. gracilis, Schwaegr. Densely tufted ; plants short, 

 olive or dusky green, simple or with few innovations : leaves 

 open, erect, strict, loosely imbricate when dry, smooth, ovate- 

 lanceolate, acuminate by the excurrent brown stout costa ; 

 borders revolute from the base to the middle ; areolation round, 

 minute but distinct, rectangular at the base ; perichoetial leaves 

 large, rellexed on the borders, with a long flexuous point : cap- 

 sule small, ovate-oblong, solid, more or less incurved ; lid narrow- 

 ly rostrate; teeth short, reddish, twisted; annulus none. — Suppl. 

 i. 125, t. 34; Bryol. Eur. t. 145. Tortula gracilis, Schleich. ; 

 Lindb. Trichost. 249. 



Hab. Crevices of limestone rocks, Brattleboro, Yermont (Frost). 

 Distinguisbed from B.fallax especially by tbe suberect straiglit leaves, 

 the long-cuspidate pericluetial leaves, the shorter small capsule, etc. 



§ 5. CoxvoLUT^. Plaiits densely ces2)itose: leaves bright or 

 yelloicish green, clilorophyllose, hoisted when dry ; basilar 

 areolation loose / perichmtial leaves long-sheathing or con- 

 volute: capside sniall, ellij^tical-ovate, subincurved, broion, 

 teeth of the funnel-lihe purple 'peristome very long, twisted. 



32. B. convoluta, Hedw. Plants short, in dense tufts, 

 bright green above : leaves open when moist, twisted when 

 dry, narrowly lingulate-lanceolate, with flat borders, acute or 

 apiculate by the excurrent costa; basilar cells quadrangular, 

 the upper close, round, subopaque, minutely papillose ; peri- 

 choetial leaves convolute, the upper closely sheathing, obtuse or 

 short-apiculate : capsule oblong-cylindrical, incurved, reddish 

 brown, on a long yellow pedicel ; annulus large, compound, 

 revoluble. — Muse. Frond, i. 86, t. 32; Bryol. Eur. t. 154. 

 Tortxda convoluta, Schrad. ; Lindb; Trichost. 248. 



Hab. Onthegroimd; British America (Z)ru?ri?no;KZ); Eaccoon Moun- 

 tains, Alabama [Lesqnereux)\ Enon Valley, Pennsylvania {Jame^)\ Oak- 

 land (Bigelow), and on burned trunks, Ukiah, California (Bolander). 



33. B. Closteri, Aust. Known only from sterile plants, 

 and closely related to the last, characterized, according to the 

 author, by its sublinear or oblong-lanceolate subcarinate remark- 

 ably granulose leaves, very slightly recurved on one of the mar- 

 gins below the middle, with a minute hyaline point; leaves 

 often strongly recurved at the apex. — Coult. Bot. Gaz. i. 29, 

 and iv. 30. 



Hab. New Jersey (^7js<i)i); Gainesville, Florida (EaceneO. In Rau 

 & Hervey's catalogue united with B. Cruegeri, a very different species. 



