ToRTULACEiE.] 263 [Barbula, 



Syn. — Bryum trichodes, erectis capitulis fusco-nigris Dill, in Ray Synops. 3 ed. 96(1724). 



Bryum palustre brevifolium, capsuUs nigricantibus Dill. Hist. muse. 377, t. 47, t. 39 

 (1741) et Herb. 



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



Bryum brevifolium Dicks. PI. crypt, fasc. II, 4 (1790). 



Trichostomum lineare Sm. F1. br. 1246, excl. syn. {1804), Eng. bot. t. 1598. Davies Welsh 

 bot. 108 (1813). De Not. Syllab. 186 (1838). 



Tr. Unoides Sm. op. c. 1247 6xcl. syn. Eng. bot. t. 2295. 



Tr. trifarium Sm. op. c. 1235 excl. syn. Eng. bot. t. 1707. 



Didymodon trifarius (non Swartz) Hook. Tayl. Muse. brit. 67, t. 20 (1818). Hook. F1. 

 Scot. 136 (1821) ; Br. FI. ii, 30 (1833J. Wahlenb. F1. suec. ii, 1074 (1826). Ahnfelt 

 in Fr. F1. 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 (i860), 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, seand. 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. 



Hab. — 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 (Nowell 1841) ! ! Marple, Bowdon, 

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

 Ulverston (Miss Hodgson) ! 1 Gordale and Otley (Hobkirk). Erdington and Barnt 

 Green, Birmingham (Bagnall) ! 1 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, /orma luxurians (Roper 1887) ! ! and at Hastings (yenner) ! 



Var. yS. 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 [Boswdl 1881) ! ! 



