ToRTULACE^.] , 254 [MolUa. 



Var. 3. fragilifolia {Juratz.) 



Plants short, i in. high, yellow-green, with few radicles; leaves short, 

 incurved, fragile, and breaking off near the summit, so that the apical only 

 are entire, points short, not acuminate, mucronate with the excurrent 

 rufescent nerve, which is pale and glossy at the back. 



Syn. — Barbula iortuosa Var. y fragilifolia Juratz. 1. c. 

 Tortilla thrausta Stirton MSS. 



Hab.— On a wall near Killin (Stirton i858). 



This fine moss varies considerably in size and colour, and is very shy of 

 fruiting, but may be always recognised by its long narrow curled leaves, 

 with thin hyaline cells at the base. The var. S. has much resemblance to 

 M. nitida in the fragile leaves, but their soft texture and yellow-green colour 

 sufficiently distinguish it. 



24. MOLLIA FRAGILIS {Dvicmm.) Lindh. 



Dioicous ; in dense tufts. Leaves dense, straight, erecto-patent, 

 lanceolate-subulate, breaking off at the points, margin plane, nerve 

 excurrent. Caps, erect subcylindric, peristome convolute. (T. 

 XXXVII, D.) 



Syn. — Didymodon fragilis Drumm. Musci Amer. bor. i, n. 127 (1828). Hartm. in Nya bot. not. 

 1855, p. 48. 



Tortilla fragilis WiLS. in Hook. Journ. Bot. iii, 437 (1841). C. Hartm. Skand. fl. 7 ed. 

 377 (1858). De Not. Muse. ital. I, 68, t. 35 (1862) ; Epil. bri. ital. 557 (1869). Lindb. 

 de Tort. 253 (1864). Hoek. Syn. br. m. 73 (1873). 



Trichostomiim fragile C. Muell. Synops. i, 586 (1849). 



Barbula fragilis Br. Schimp. Bry. eur. fasc. 62 — 64, Suppl. t. 4 (1855), CoroU. 141 (1855). 

 ScHiMP. Synops. 181 (i860), 2 ed. 219. Lindb. in Oefv. vet. ak. foerh. xx, 387 (1863). 

 Juratz. Laubm. oesterr.-ung. 123 (1822). Lesq. James Mosses N. Amer. 129 (1884). 



Campylopus Hartmani Schimp. MSS. Hartm. in Nya bot. not. 1855, p. 49. 



Tortula Drummondii Mitt. Journ. Lin. soc. i, Suppl. 27 (1859). Lindb. in Hartm. Skand. 

 fl. 8 ed. 392 {1861). 



Barbula Drummondii Milde Bry. siles. 124 (i86g). 



Mollia fragilis LiNDB. muse, seand. 21 (1879). 



Dioicous ; in wide dense tufts, yellow-green above, fuscous below. 

 Stems erect, straight, rigid, simple or dichotomous, densely matted 

 with brown tomentum. Leaves very crowded, erecto-patent, lanceolate- 

 subulate, very fragile in the upper part, the margin plane, crenulate, 

 the comal from an elongated base, capillaceo-subulate ; nerve when dry 

 very glossy and whitish on the back, excurrent in a triquetro-semiterete 

 subula ; basal cells very thin and hyaline, prolonged far up the margin 

 in a narrowing band, apical minute, highly chlorophyllose, obscure 

 from the dense covering on both sides of truncate papillae, descending 

 into the hyaline base with an acute angle. Caps, erect, short-necked, 

 from ovate, oblong and subcylindric, regular or lightly curved, lid two- 



