TORTULACE^S.] 263 [Barbula, 



Svn. Bryum trichodes, erectis capitulis fusco-nigris DILL, in RAY Synops. 3 ed. 96(1724). 



Bryum palustre brevifolium, capsulis nigricantibus DILL. Hist. muse. 377, t. 47, f. 39 



(1741) et Herb. 



Weissia recurvirostris HEDW. Stirp. i, 19, t. 7 (1787) ? 

 Bryum brevifolium DICK'S. PL crypt, fasc. II, 4 (1790). 

 Trichostomum lineare SM. Fl. br. 1246, excl. syn. (1804), Eng. bot. t. 1598. DAVIES Welsh 



bot. 108 (1813). DE NOT. Syllab. 186 (1838). 

 Tr. linoides SM. op. c. 1247 exc ^- s y n - Eng. bot. t. 2295. 

 Tr. trifarium SM. op. c. 1235 exc '- s y n - Eng. bot. t. 1707. 



Didymodon trifarius (non SWARTZ) HOOK. TAYL. Muse. brit. 67, t. 20 (1818). HOOK. Fl. 

 Scot. 136 (1821) ; Br. Fl. ii, 30 (1833*. WAHLENB. Fl. suec. ii, 1074 (1826). AHNFELT 

 in FR. Fl. scan. 239 (1835). 



Trichostomum tophaceum BRID. Mant. 84 (1819), Bry. univ. i, 495 (1826). DE NOT. Syll. 

 187 (1838), Epil. bri. ital. 506 (1869). BR. SCH. Bry. eur. fasc. 18-20, p. 9, t. 6 (1843). 

 RABENH. Deutsch. kr. fl. ii, S. Ill, 114 (1848). C. MUELL. Synops. i, 573 (1849). 

 WILS. Bry. br. 113, t. 20 (1855). SCHIMP. Synops. 149 (1860), 2 ed. 169. BERK. 

 Handb. Br. m. 260 (1863). LINDB. De Tort. 227 (1864). MILDE Bry. siles. 103 (1869). 

 HOBK. Syn. br. m. 60 (1873). HUSN. Mouss. nord-ouest 73 (1873), Muse. gall. 85, 

 t. 24 (1885). LESQ. JAMES Mosses N. Amer. 109 (1884). 

 Anacalypta tophacea BRUCH in NEES HORNSCH. Bry. germ, ii, P. II, 148, t. 37, f. 5 (1831). 



HUEBEN. Muse. germ. 120 (1833). 



Barbula tophacea MITT. Journ. Linn. soc. i, Suppl. 35 (1859). 

 Barbula brevifolia LINDB. muse, scand. 22 (1879). 

 Didymodon tophaceus JURATZ. Laubm. oesterr.-ung. 100 (1882). 



Dioicous ; in dense tufts, olive green above, reddish below, often 

 coated with calcareous deposit. Leaves from an erect base, patulous, 

 very minutely verruculose, from ovate, lineal-lane., obtuse, carinate, 

 concave, nerve vanishing below apex, margin revolute, cells minute, 

 rounded, incrassate, at base laxer, shortly rectang., hyaline. Perich. 

 bracts larger, erect, more obtuse. Caps, on a thickish red seta, erect, 

 ovate or oblong, rufo-fuscous ; annulus not defined ; lid with an oblique 

 beak ; per. tubular at base, the teeth imperfect or unequal, pale or red, 

 legs partly free, partly connate. Male plant more slender ; infl. gem- 

 miform, bracts ovate, acuminate, nerved. 



HAS. Calcareous rocks and walls. Fr. 10 2. 



Glasgow. Clapham springs (Abbott). Teesdale (Backhouse). Winwick stone quarry 

 (Wilson 1843) ! ! Sussex (Mitten). Crambeck, Castle Howard, and near York 

 (Spruce 1847) ! Ramsden Clough and Todmorden (Nozvell 1841) ! ! Marple, Bowdon, 

 and Southport (Hunt 1865) ! ! Killiney (Sim 1867) ! ! Menai declivity (Hunt 1868) ! ! 

 Ulverston (Miss Hodgson) ! ! Gordale and Otley (Hobkirk). Erdington and Barnt 

 Green, Birmingham (Bagnall) ! ! Clifton, Manchester (Wild 1874;. Plymouth 

 (Holmes). Wetherby (Wesley 1878)! ! Wembury, Devon, a very dwarf dense form 

 (Holmes) ! ! Berwick coast (Hardy). Balcaskie, Fife (Howie 1863) ! Springs in the 

 cliff at Eastbourne, forma luxurians (Roper 1887) ! ! and at Hastings (Jenner) ! 



Var. ft. acutifolia Schimp. 



Less robust, leaves longer, narrower, acutely acuminate, when moist 

 recurvo-patulous. 



SYN. SCHIMP. Synops. 2 ed. 170. 



HAB. Sandstone rocks near Warrington (Wilson). Wet clay soil near Man- 

 chester (Dr. Wood). Headington Hill, Oxford (Boswell 1881) ! ! 



