TORTULACE.E.] 215 [Tortula. 



HAB. Moist banks. 



Near Dublin (Drummond 1829) ! Bray and Glasnevin, Dublin (Moore 1860) ! ! Near 

 Blanchardstown (Orr 1867) ! 



This and the next throe species are closely allied in habit and form of 

 leaf, but may each be easily recognized with a little care. T. Vahlii comes 

 nearest to T. muralis, but is distinguished by its cylindraceous capsules, and 

 absence of the strongly recurved margins to the leaves. 



The typical form, and also T. cuneifolia, vary considerably in the form of 

 the leaf as well as in the extent of the nerve-point, and in this country it 

 appears to prefer calcareous soil. 



10. TORTULA MARGIN AT A (Br. Sch.) Spruce. 



Dioicous ; short. Leaves linear-oblongate, cuspidate with the 

 excurrent nerve, the margin with a thickened border of narrow cells. 

 Caps, oblong, erect, lid conic acuminate, peristome closely contorted. 

 (T. XXXI, E.) 



SYN. Bryum tegular e humile, pilosum et incanum, Var. non pilosa DILL. Hist. Muse. 356, t. 45, 



fig. 14, F, G. (1741) et Herbar. 

 Tortula caspitosa HOOK. GREV. in BREWST. Ed. Jour, i, 296 (1824). DE NOT. in Mem. 



ac. Torin. xl, 298 (1838), et Syllab. 174 (1838). 

 Barbula caspitosa BRUCH MSS. (non SCHWAEGR.) 

 Barbula marginata BR. SCH. Bry. eur. fasc. 13 15, Mon. 33, t. 19 (1842). C. MUELL. 



Synops. i, 629 (1849). SCHIMP. Synops. 183 (1860), 2 ed. 199. MILDE Bry. siles. 114 



(1869). HUSN. Mouss. nord-ouest 85 (1873). LESQ. JAMES Mosses N. Amer. 118 



(1884). 

 Tortula marginata SPRUCE in HOOK. Lond. J. iv, 192 (1845), et in Ann. mag. n. h. 2 ser. 



iii, 375 ( J 849). WILS. Bry. brit. 131, t. 43 (1855). DE NOT. Muse. ital. I, 24, t. 7 



(1862), Epil. bri. ital. 532 (1869). BERK. Handb. br. m. 253 (1863). LINDB. de Tort. 



238 (1864). HOBK. Syn. br. m. 65 (1873). 



Desmatodon marginatus MITT. Journ. Linn. soc. i, Suppl. 38 (1859). JURATZ. Laubm. 

 oesterr.-ung. 132 (1882). 



Tortula acuminata MITT. Journ. Linn. soc. Bot. xii, 167 (1869). 



Dioicous ; very short, densely gregarious. Leaves soft, pale green, 

 erecto-patent, somewhat twisted when dry, sublingulate-oblong and 

 narrowly subspathulate, apex obtuse or slightly acuminate, shortly 

 piliformi-cuspidate with the yellow excurrent nerve ; concave, carinate 

 towards apex, margin erect with a narrow border of a double layer 

 of 2 3 series of narrowly rectang. pachydermous yellowish cells, upper 

 cells minutely papillose, hexagono-quadrate, opake and indistinct, 

 basal smooth, hexagono-rectangular. Caps, on a longish purple seta, 

 leptodermous, ovate-oblong or subcylindric, brown ; lid pale red, conic 

 elongated, oblique, half length of caps., annulus simple rather broad ; 

 per. on a short pale basal membrane, light red. 



Male plants very small, simple ; infl. gemmaceous, bracts ovato- 

 lanceolate. 

 HAB, Sandstone walls and by roadsides ; not common. Fr. 4 5. 



