TORTULACE^E.] 212 [Tortilla. 



burn and Marple (Hunt 1863) ! Ltvens (Barnes 1867) ! Sussex Downs (Davies) \ ! 

 Crambeck and Welburn, Yorks. (Spruce 1843)! Newton Viaduct (Wilson, 18.47)!! 

 Masham (Mudd). Thirsk and Byland Abbey (Baker). Hovingham, Ingleboro and 

 Settle, Yorks. (Hobkirk). Greenheugh, Burnmouth and Wooler (Hardy}. Bearley, 

 Red Hill and Maxtoke, Warwick (Bagnall). Ashwood Dale, Derby. (Holt 1880) ! ! 

 Common in Devon and Cornwall. 



C. Desmatodon. Nerve free from appendages ; leaves soft, highly 

 chlorophyllose. 



7. TORTULA ATROVIRENS (Sm.) Lindb. 



Autoicous ; dwarf, csespitulose. Leaves spreading, oblong, sub- 

 spathulate, concave, apiculate, with reflexed margins ; nerve thickened 

 anteriorly above the middle, slightly excurrent. Caps, oval, lid 

 obliquely rostellate, teeth of per. unequal, short, obliquate, not con- 

 torted. (T. XXXI, B.) 



SYN. Trichostomum convolutum BRID. Sp. muse. I, 232 (1806), Mant. 83 (1819), Bry. univ. i, 

 492 (1826). C. MUELL. Synops. i, 590 (1849). SCHIMP. Synops. 153 (1860). BERK. 

 Handb. br. m. 261, t. 22, f. 8 (1863). HUSN. Mouss. nord.-ouest. 75 (1873). 

 Grimmia atrovirens SM. Eng. Bot. t. 2015 (1809). 



Didymodon nervosus HOOK. TAYL. Muse. brit. 66, t. 20 (1818). BRID. Bry. univ. i, 516. 



GRAY Nat. arr. br. pi. i, 742 (1821). HOOK. Br. fl. ii, 28 (1833). MACK. Fl. hibern. P, 



2, 17 (1836). 

 Trichostomum nervosum FUERNR. in Flora xii, P. II, Erganz. 32 (1829). HUEBEN. Muse. 



germ. 295 (1833). 

 Desmatodon nervosus BR. SCHIMP. Bry. eur. f. 18 20, Mon. 6, t. 3 (1843). RABENH. 



Deutsch. kr. fl. ii, S. 3, 100 (1848). SPRUCE in Ann. mag. n. h. 2 ser. iii, 374 (1849). 



SCHIMP. Coroll. 26 (1855). WILS. Bry. brit. 103, t. 20 (1855). DE NOT. Epil. bri. ital. 



576 (1869). LESQ. JAMES Mosses N. Amer. 113 (1884). 

 Tortula atrovirens LINDB. de Tort. 236 (1864). HOBK. Syn. br. m. 65 (1873). 

 Barbula nervosa MILDE Bry. siles. 112 (1869). 

 Barbula atrovirens SCHIMP. Synops, 2 ed. 194 (1876;. 

 Desmatodon atrovirens JURATZ. Laubm. oester.-ung. 136 (1882). 



Autoicous; dwarf, csespitulose or subpulvinate, dingy green. 

 Leaves densely imbricated, spirally convolute when dry, erecto-patent 

 when moist, oval-oblong, concave, nerve yellowish, thickened above 

 anteriorly, excurrent in a short acute mucro, margin entire, revolute, 

 cells at base lax shortly rectangular with two marginal rows quadrate, 

 above minute quadrate, opake very finely papillose. Caps, on a short 

 reddish seta, erect, oval, fuscous, exannulate ; lid half length of caps., 

 conic obliquely rostellate ; teeth of per. on a pale exserted basal mem- 

 brane, irregular, unequal, papillose, rufo-ferruginous, erect and straight 

 when dry, slightly twisted obliquely when wet ; spores smooth. Male 

 infl. minute gemmaceous, at base of female, bracts ovato-lanc., faintly 

 nerved. 

 HAB. Dry banks and old walls, especially near the sea. Fr. 3 5. 



Killiney Bog, Dublin (Taylor). Cork (Carroll). Bray Head, Wicklow and Youghal 

 (Sargint). Hastings (Jenner) ! ! Dawlish (Holmes). Seaton Cliffs, Cornwall (Brent). 

 Truro (Tellam). Drayton Bushes, Warwick (Bagnall). Old Cambus and Eyemouth, 

 Northumberland (Hardy). Anglesea (Wilson). Barmouth (Holt 1882) ! ! 



