Grimmiacejj.J 85 [Orthotrichum. 



the wall of capsule ; cilia 8, shorter than the teeth, and of the same 

 colour ; lid conic, shortly apiculate. Calyptra naked or with a few 

 short hairs, companulate-hemispheric, plicate from base to apex, 

 yellowish brown. Male infl. at base of female branch. 



Hab. — On trees, rare. Fr. 4. 



Kilcock, Meath (i?. Brown). Copgrove, Yorks. {Rev. y. Dalton). Ripon (Brunton). On 

 ash, Clifton Ings, York (Spruce 1843) ! ! Addingham, Bolton-br. (Carrington 1858). 

 Malahide (Moore 1871). Rowardennan, Loch Lomond (Dr. Wood 1875). 



•I have not seen any British specimen of 0. pumilum Swartz, and must 

 therefore exclude it from our list ; it differs from O Schimperi by the more 

 cylindric capsule, with a distinct neck tapering gradually into the pedicel, 

 and paler yellow ribs. 



O. Schimperi is one of our smallest species, with the capsule immersed 

 entirely or to the middle. 



15. ORTHOTRICHUM FALLENS Bmch. 



Autoicous; in very small lax green tufts. Leaves lanceolate, 

 concave and rounded at point. Caps, emergent, oval-oblong, tapering 

 gradually downwai'ds, with 8 broad striae ; teeth 8 bigeminate, cilia i6, 

 the alternate ones very small. Calyptra conic-campanulate, naked. 

 (T. LVIII, A.) 



Syn. — Orthotrichum pallens Bruch in Brid. Bry. univ. i, 788 (1827). Br. Sch. Bry. eur. 

 fasc. 2 — 3, p. 24, t. 13 (1837). Rabenh. Deutsch. kr. fl. ii, S. 3, 184 (1848). C. Muell. 

 Synops. i, 701 (1849). Hartm. skand. fl. Hammar Mon. Orthot. suec. 11 (1852). 

 WiLS. Bry. br. 179, t. 45 (1855). Carringt. Trans. Bot. see. Edin. vi, 51 (1858) ; et 

 Phytologist 1858, p. 571. ScHiMP. Synops. 271 (i860), 2 ed. 331. Berk. Handb. Br. 

 in. 224 (1863). MiLDE Bry. siles. 176 (1869). Hobk. Syn. Br. ra. 91 (1873). Juratz. 

 Laubm. oester.-ung. 207 (1882). Lesq. James Moss. N. Amer. 175 (1884). Venturi 

 in HusN. Muscol. gall. 188, t. 51 (1887). 



Dorcadion pallens Lindb. Muse, scand. 28 (1879). 



Autoicous ; in very small, lax, irregular, pale green or yellow-green 

 tufts, k in. high, but little branched. Leaves imbricated when dry or 

 loosely incumbent and slightly flexuose, when moist erecto-patent, from 

 an oval-oblong base, lanceolate, the point concave and rounded, entire 

 or crenulate at margin by projecting cells, or acuminate, or suddenly 

 apiculate, margin revolute below the point ; cells at base rectang. nearly 

 diaphanous, gradually passing into rounded, angular or hexagonal, with 

 slightly thickened yellowish walls ; papillse prominent simple or forked ; 

 nerve vanishing below point. Perich. bracts longer, narrowly ligulate, 

 darinate, strongly nerved to apex. Caps, emergent, oval-oblong, pale 

 yellow, defluent insensibly into a neck long as sporangium, on a very 

 short pedicel, vaginula naked or with some paraphyses, bands §, orange, 



