RECENT ADDITIONS TO OUR MOSS FLORA. 229 



margins inflexed, quite entire, basal angles auricled, orange ; nerve 

 narrow, compressed ; perichaetial leaves sheathing, suddenly narrowed 

 into a long subula. Capsule cernuous, cylindraceous, more or less in- 

 curved, strumose, not striate. Annulus simple ; lid rostrate. — Alpine 

 rocks. Ben Nevis (Wilson). Cairn Taggart and Loch-na-Neera, 

 Clova (A. O. Black and Fergusson). Ben-y-Gloe (Rev. J. M. Crombie). 

 Much more robust than D. Stark'u, with more rigid, broader based 

 leaves, almost tubular in the upper part, and a thicker walled capsule. 

 Prequent in Greenland and Labrador. (Figured in ' Science Gossip,' 

 vol. iii.) 



2. D. viride, Sch. Muse. Eur. Nov. fasc. 3. Campylopns viridis, 

 SuUiv. and Lesqx. Ic. Muse, p. 28, t. 17. D. tlirandnm, Schim- 

 per, ms. — Dioicous, in dull green, densely cushioned tufts, wilh 

 ferruginous tomentum. Stem dichotomous, fasciculate leaved by those 

 at the apex of the innovations forming a coma. Leaves ascend- 

 ing from a patent oblong base, lineal-lanceolate, subulate, quite entire, 

 highly fragile, so that only the youngest can be found perfect. Nerve 

 semiterete, broadish at base, running out into the concave subula. 

 Areolation rectangular, highly chlorophyllose, laxer at base, and in the 

 middle of it hyaline. Capsule erect, oblong ; lid with a long beak. — 

 Abbots Bromley, Staffordshire, on old oak rails, 1864 (Rev. A. Bloxam). 



The above species was at first referred by Mr. Wilson to D. str'ictum, 

 Schleicher, and afterwards to D. fragllifoUiim, Lindberg, but by Prof. 

 Lindberg to B. viride. All three form a natural group of closely 

 allied species ; and after careful comparison with American specimens 

 from SuUivant, with which ours quite accord in habit, I think both 

 must be referred to one species, though, in the British examples, the 

 upper cells are not so distinctly quadrate as in the American ones, from 

 the cell walls being less incrassated. In neither do I find the beauti- 

 ful chlorophyllose contents observable in the Finland specimens, dis- 

 tributed in Rabenhorst's ' Bryotheca,' n. 1061, and so well figured 

 by Schimper (Musci Eur. Novi, fasc. 3, tab. 1) ; nor are the longitu- 

 dinal vows of hyaline cells, in tlic centre of tlie basal wing, so well 

 defined as in that figure. In D. fragiUfoliiim all the cells are narrower, 

 and more elongated, with thin walls, and the nerve is broader. 



3. D. lonf/ifoUum. Ehrhart, Dec. Crypt, n. 114. — Dioicous, laxly 

 tufted, soft, silky, pale or glaucous-green, ascending, repeatedly dicho- 

 tomous. Leaves long, falcato-secund, lanceolate at base, becoming very 



