Orthotrichum.] BKYACE^. ' 169 



emergent, oval or slightly obovate, broadly striate, urceolate 

 when empty and dry ; teeth connate in pairs, perforated at the 

 apex, punctate ; cilia as long as the teeth. — Schimp. Coroll. 

 42 ; Bryol. Eur. t. 213. 



Var. majus. More robust, glaucous green: leaves broader, 

 reflexed on the borders ; cells with longer simple or double 

 papilloB : teeth longer, entire, minutely punctate. — 0. cdjMstre, 

 var., Sulliv. Icon. Muse. Suppl. 69, t. 51. 0. occidentale, James, 

 Bot. King Exp. 402. 



Hab. Upper Canada, to the Eocky Mountains {Drummond)\ Utah, 

 (Watson). 



12. O. speciosum, Nees. Plants longer than in the Last, 

 yellowish green : leaves close, open, recurved when moist, 

 densely verrucose, long-lanceohite, complicate in the upper 

 part ; borders revolute all around : calyptra large, campanulate, 

 covering nearly the whole capsule, densely covered with yellow 

 flexuous hairs: capsule thin, cylindrical-oblong, pale yellow, 

 narrowed into a short collum and comparatively long-pedicelled, 

 generally emergent, smooth when empty or merely narrowly 

 costate near the orifice, obscurely 8-plicate when dry ; teeth 

 bigeminate, perforated at the apex ; cilia generally 8, rarely 16, 

 yellowish, densely papillose, more or less sinuous, composed of 

 two rows of large cells. — Sturm, Deutsch. Fl. ii. 17 ; Bryol. 

 Eur. t. 217. O. elegans, Schwaegr. ; Richards. Frankl. Narr. 

 App. 28 ; Mitten, Journ, Linn. Soc. viii. 24. 



Var. polycarpum. Stem-leaves very short, erect, ap- 

 pressed, dark green, most of them with male flowers in the 

 axils ; comal leaves longer : calyptra dark brown, deeply pli- 

 cate, slightly hairy. 



Var. Raui. Stems shorter : capsule exserted on a longer 

 pedicel ; teeth pellucid, distinctly articulate ; cilia longer 

 (always ?) than the teeth. — 0. Rauei^ Austin, Bull. Torr. 

 Club, vi. 343. 



Hab. Trunks of trees; plains and mountains. Widely distributed 

 and extremely variable; the varieties in the mountains of Colorado (Hall, 

 Brandegee). 



O. elegans, Schwaegr., is one of the numerous varieties of this species, 

 differing from tlie normal form in the smooth capsule and the stems more 

 slender and shorter. O. Hainesm, Aust. 1. c. 342, is another form of it, 

 differing merely in the short and less numerous hairs of the capsule. The 

 specimens were collected on rocks in Colorado by Mrs. Mary P. Haines. 

 We have seen no specimens of var. Baui. 



