GRIMMIACE^.J 7^ [Ortlwtrichum. 



strongly incrassate, with prominent conical papillae. Caps, immersed, 

 yellowish-brown, oval-oblong, 8-striate, decurrent at base in a longish 

 neck, slightly narrowed below mouth, when dry and empty elongate, 

 deeply sulcate ; stomata few, superficial ; teeth 16, geminate, pale, 

 revolute when dry, cilia 16, rather broad, appendiculate, papillose, 

 rufous; lid pale, nearly conical; calyptra conic, elongate, with yellow 

 hairs. Male infl. lateral, axillar. 

 HAB. Trunks of old trees, not unfrequent. Fr. 7. 



This fine moss may be readily known by its large size and long sub- 

 squarrose leaves, and is scattered throughout the whole kingdom, for I have 

 found it in fine fruit at Virginia Water, and at Finlarig, Killin, as well as in 

 Yorkshire and intermediate districts. Dr. Spruce found a marked form by 

 the Ouse near York in 1843, with rigid, closely appressed leaves. 



Sect. 2. CALYPTOPORUS Lindb. Stomata immersed in the wall of 

 capsule and more or less covered by some of its epidermal cells. 



* Upper leaves hair-pointed, cilia 16. 



8. ORTHOTRICHUM DIAPHANUM Schrad. 



Autoicous ; in small loose cushions, hoary at top. Leaves oblong- 

 lane., with acuminate hyaline points. Caps, emerging, oblong, suddenly 

 contracted at base, teeth 16, cilia 16, cal. campanulate, nearly naked. 

 (T. LVI, D.) 



SYN. Orthotrichum diaphanum SCHRAD. Spic. Fl. germ. 69 (1794). HOKFM. Deutsch. fl. ii, 26 

 (1796). BRID. Muse. rec. II, P. II, 29 (1801), Sp. muse. II, i (1812). Mant. in (1819), 

 Bry. univ. i, 293 (1826). SM. Fl. brit. 1235 (1804), Eng. Bot. t. 1324. TURN. Muse. 

 hib. 99, t. 9, f. i (1804). SCHULTZ Fl. starg. 310 (1806). WEB. MOHR Bot. Tasch. 

 234 (1807). VOIT Muse. herb. 62 (1812). STURM Deutsch. fl. II, 14 (1813). ROEHL. 

 Deutsch. fl. iii, 81 (1813). SCHWAEG. Suppl. I, P. II, 31, t. 55 (1816). MART. Fl. cr. 

 erl. 78 (1817). HOOK. TAYL. Muse. br. 74, t. 21 (1818). GRAY Nat. arr. br. pi. i, 746 

 (1821). HOOK. Fl. scot. P. II, 137 (1821), Br. fl. ii, 54 (1833). FUNCK Moost. 35, t. 23 

 (1821). HOOK. GREV. in Edin. J. Sc. 1824, p. 123. HUEBEN. Muse. germ. 377 (1833). 

 MACK. Fl. hib. P. 2, 30 (1836). BR. SCH. Bry. eur. fasc. 23, p. 25, t. 14 (1838). DE 

 NOT. Syllab. 157 (1838), Epil. 316 (1869). RABENH. Deutsch. kr. fl. ii, S. 3, 185 (1848). 

 C. MUELL. Synops. i, 694. (1849). HAMMAR Mon. Orthot. suec. 13 (1852). WILS. Bry. 

 br. 185, t. 21 (1855). SCHIMP. Synops. 277 (1860), 2 ed. 333. BERK. Handb. br. m. 226, 

 1.20(1863). MILDE Bry. siles. 178 (1869). BOULAY Fl. cr. de 1'Est 604(1872). HOBK. 

 Syn. br. m. 93 (1873). HUSN. Mouss. nord-ouest 109 (1873). JURATZ. Laubm. oester- 

 ung. 204 (1882). LESQ. JAMES Moss. N. Amer. 176 (1884). VENTURI in Muse. gall. 

 193,1.52(1888). 



Bryum diaphanum GMEL. (L.) Syst. nat. ii, 1335 (1791). 

 Wcissia diaphana ROTH Fl. germ, iii, P. I, 223 (1800). 

 O. aristatum TURN. Muse. hib. 100, t. 9, f. 2. SM. Fl. brit. 1265. 

 O. hctcrophyllum and 0. pilosum P. BEAUV. Prodr. 80 (1805). 



Autoicous ; in small irregular dark green tufts, hoary at top. Leaves 

 imbricated when dry, erecto-patent when moist ; soft, oblong-lane., termi- 



