Grimmiace^.] 67 [Orthoirichum. 



Stomata immersed. 



Upper leaves with diaphanous hair-points. diaphanum. 



without diaph. hair-points. 



Leaves obtuse. 



Leaves round at point, with small crowded cells. rividcire. 



apiculate, with lax rounded cells. Sprncei. 



Leaves more or less acute. 



Teeth of per. striolate vertically, with short basal lamellse. 



Capsule immersed or emerging. ciipulaium. 



much exserted. anomalnnt. 



Teeth of per. papillose, without lamellae. 



Neck of caps, shrivelling into a cup, enclosing the pedicel. Schimferi. 



defluent into the pedicel. 



Vaginula hairj'. strnmineum. 



smooth. 



Capsule immersed. 



Caps, oval-oblong, calyp. campanulate, 



naked. pallens. 



cylindric, cal. conic, with few hairs, tenellum. 



Capsule exserted. pnUhellum. 



Sect. I. GYMNOPORUS Lindh. Stomata on wall of capsule 

 superficial. 



'f Dioicous ; leaves obtuse with plane margins. 



I. ORTHOTRICHUM OBTUSIFOLIUM [Sckrad.) 



Dioicous ; in small yellowish-green cushions, with short turgid 

 branches. Leaves imbricated, broadly ovate with the margin erect, 

 obtuse and hyaline at apex. Caps, immersed, oval-pyriform, with the 

 neck longer than sporangium, and 8 weak bands ; stomata superficial ; 

 teeth 8, bigem. ; calyptra naked, covering the capsule. (T. LV, A.) 



Syn. — Orihotrichum obtusi/olium Schrad. Crypt. Gew. 14 (1796). Swartz Muse. suec. 42, t. 4, 

 f. g (1798). Brid. Muse. rec. H, P. II, 23 (i8oi). Sp. muse. II, 6 (1812), Mant. in 

 (1819), Bry. univ. i, 287 (1826). Schultz F1. starg. 308 (1806). Web. Mohr Bot. 

 Tasch. 231 (1807). VoiT Muse. herb. 62 (1812I. Wahlenb. F1. lapp. 365 (1812), Fl. 

 carp. 354 (1814). ROEHL. Deutsch. fl. iii, 82 (1813). Schwaeg. Suppl. I, P. II, 14, 

 t. 50 -(1816). FuNCK Moost. 35, t. 23 (1821). Hook. Grev. in Edin. J. So. 1824, p. 122. 

 HuEEEN. Muse. germ. 355 (1833). Br. ScH. Bry. eur. fasc. 2 — 3, p. 13, t. i (1837). De 

 Not. Syllab. 153 (1838), Epil. bri. ital. 306 (i86g). Rabenh. Deutsch. kr. fl. ii,s. 3, 179 

 (1848). Hammar Orthot. suec. 2 (1852). C. Muell. Synops. 688 (1849). Carringt. 

 in Trans, Bot. Soc. Edin. vi, 49, et in Phytol. 1858, p. 572. Schimp. Synops. 263 

 (i86o), 2 ed. 320. Berk. Handb. br. m. 221 (1863). Milde Bry. siles. 172 (i86g), 

 BouLAY Fl. cr. de I'Est 617 (1872). Hobk. Syn. br. m. go (1873). HusN. Mouss. nord- 

 ouest 106 (1873). JuEATZ. Laubm. oester-ung. 198 (1882). Lesq. James Moss. N. 

 Amer. 177 (1884). Venturi in Muse. gall. 193, t. 52 (1888). 



Wcissia obtusifoUa Roth Tent. Fl. germ, iii, I, 218 (1800). 



Dorcadion obtusifolium Lindb. Muse, scand. 29 (1879). 



Dioicous ; in small dense cushioned tufts, pale or yellow-green 

 above, fuscescent at base ; stems J — i in. high, with a few turgid 

 branches. Leaves closely imbricated when dry, quickly spreading 

 when wet and then becoming straight, ovate-oblong, concave-carinate, 

 obtusely rounded, slightly hyaline and minutely serrulate at point, 

 plane at margin, often bearing small oblong septate gemmae on the 



