GKiMMiACE.-ii.j - 33 [Grimmia. 



seta, elliptic, smooth, lid conic, rostellate, calyptra raitrseform. 

 (T. L, C.) 



Syn. — Bryum orbictilare fulvinatum, hirsutie canescens, capsulis immersis, var. capsulis cvectis 

 prcedita Dillen. Hist. muse. 395, t. 50, fig. 65 D — E (1741) et Herbar. 



Grimmia campestris Burchell MSS. Hook. Muse. exot. ii, g, t. 129 (1S20), Steud. 

 Nom. cr. 188 (1821). 



Cmnpylopus Icevigatus Brid. Mant. 76 (iSig). 



Grimmia Icevigaia Brid. Bry. univ. i, 183 (1826). 



Grimmia leucophcea Grev. in Wern. Trans, iv, 87, t. 6 (1822), Seott. Cr. fl. v, t. 284 (1828). 

 Hook. Tayl. Muse. br. 2 ed. 70, Suppl. t. 3 (1827). Hook. Br. fl. ii, 26 (1833). 

 HuEBEN, Muse. germ. 187 (1833). De Not. Syllab. 248 (1838), Epil. bri. ital. 70S 

 (i86g). ScHWAEG. Suppl. IV, t. 306 (1842). Bs. ScH. Bry. eur. fasc. 25 — 28, p. 23, 

 t. 20 (1845). Rabenh. Deutsch. kr. fl. ii, S. 3, 165 (1848). C. Muell. Synops. 794 

 (1849). WiLS. Bry. br. 161, t. 33 (1855). Schimp. Synops. 218 (i860), 2. ed. 261. 

 Berk. Handb. br. m. 238 (1863). Milde Bry. siles. 152 (i86g). Hobk. Syn. br. m. 

 84 (1873). HusN. Mouss. nord-ouest 93 (1873), Muse. gall. 127,1.36(1886). Juratz. 

 Laubm. oester.-ung. 168 (1882). Boulay Muse. Fr. 373 (1884). Lesq. James Moss. 

 N. Amer. 144 (1884). 



Dryptodon Uticophceits Brid. Bry. un. i, Suppl. 773 (1827). 



Dioicous ; in wide very laxly coherent tufts, dull green, silvery 

 grey above. Stem erect, simple or dichotomous, the branches erect, 

 dense-leaved, subclavate at apex. Lowest leaves minute, triangular- 

 ovate, muticous, thence gradually larger, erecto-patulous, from a broad 

 oblong base, ovato-lanc, suddenly running out into a long very rough 

 hair, decurrent at sides, cymbiform-concave, the margin flat and erect ; 

 cells soft, green, roundish-quadrate, opake, bistratose in upper part, at 

 base next the nerve with 2 — 6 rows elongate, faintly hyaline, the rest 

 quadrate; nerve thin and flat. Perich. bracts larger, semivaginant, 

 with lax, rectang. cells, several rows at margin hyaline. Caps, on a 

 pale straight seta, scarce elevated above the hairs, erect, elliptic or 

 tumid-oblong, reddish-brown, rather large, smooth, pachydermous ; 

 Calyptra mitrseform, lobed, annulus of 3 rows of cells, lid conic, subulate 

 or bluntly rostellate, straight, J length of caps., teeth 2 — 3-fid to middle, 

 cribrose below, rarely subentire, purple. Male plants mixed with female, 

 infl. gemmiform, bracts broadly ovate, with short hairs. 



Hab. — Dry granite and basaltic rocks. Fr. 4, 



Arthur's Seat, Edinburgh {R. Brown) ! ! Fairhead,>Fife (Arnott). Penzanee {Curiiow 

 1878) ! The Chasms, I. of Man (Holt 1884) ! The Gannel, Newquay, Bolt head 

 and Whitsand Bay (Holmes 18S4) ! ! Abbey craig, Stirling (Lyle). Salcombe 

 (Mrs. Griffiths). Giant's Causeway and Rathlin Island (Moore 1837). Dartmoor 

 (Marquand 1884). Largo Law [Howie 1864). 



Readily known by the broad leaves with very rough hair-points, and by 

 the solid rufous capsule, just emergent above the leaf-hairs. 



Sect. 3. DRYPTODON {Brid.} Plants taller, in very lax irregular 

 tufts, dichotomously branched, fastigiate. Leaf cells incrassate, their walls 

 more or less crenulate or sinuate. Caps, on a curved or straight seta, 

 smooth ; teeth more or less deeply cleft.; calyptra mitrseform. 



