BRYUM. 127 



We are indebted for many important remarks relative to 

 the serpyllifolia-lrile of the Brya to our kind friend the 

 Rev. Mr. Dalton, as well as for excellent specimens of all 

 the species. 



Br. hornum ; stems elongated ; leaves lanceolate, acute, 

 reticulated, their margins thickened, denticulate, nerve ge- 

 rally disappearing helow the summit; capsule oblongo- 

 ovate, pendulous ; lid hemispherical, mucronulate. (TAB. 

 XXXI.) 



Bryum hornum. Schreb. Fl. Lips. p. 83. Turn. Muse. Hib. p. 128. 

 Engl. Bot. t. 2271. Moug. et NestL n. 34. Mnium hornum. Linn. Sp. 

 PL p. 1576. Hedw.Dill. Muse. f.51./. /I. 



HAB. Marshy places and in wet woods. 



Stems simple, erect, densely tufted, from two to three 

 inches in length. Leaves with their margins and nerve red- 

 dish, the upper ones in the fertile plant very narrow, almost 

 linear. Lid hemispherical, with a short point, in which it 

 differs from the following species. Whole plant of a yellow 

 lurid green colour. 



25. Br. cuspidatum ; stems elongated ; leaves ohovate, acute, 

 reticulated, their margins thickened, denticulated above, 

 nerve running beyond the point; capsule ovate, pendulous; 

 lid conico-hemispheric, obtuse. (TAB, XXXI.) 



Br. cuspidatum. Schreb. FL Lips. p. 84. Turn. Muse. Hib. p. 131. 

 Engl. Bot. t. 1474. Mnium cuspidatum. Hedw.Sp. Muse. t. 45. f. 5-8. 

 Mnium serpyllifolium /3. Linn. Sp. PL p. 1577- Dill. Muse. t. 53. 

 /. 79. A-L. 



HAB. In woods and on walls in shady situations. 

 Besides the difference alluded to, under the last described 

 species, between this and Br. hornum, we may remark that 

 the plant is smaller, lax in its mode of growth, with creep- 

 ing sterile shoots (which, as Mr. Dalton observes, take root 

 at the extremity) ; with broader, almost always obovate, 

 and fewer leaves, the perichagtial ones alone ovate or nar- 

 row-ovate; their texture is softer, so that they become 

 crisped when dry: whereas those of Br. hornum are nearly 

 as erect in that state as when growing. The foliage is alto- 

 gether of a pale but bright green. 



Mr. Dalton, whose late residence at Copgrove afforded 

 him excellent opportunities of examining the mosses of this 

 family, informs us that he never met with a specimen of the 

 present species with more than one fruitstalk, and he is of 

 opinion that Dillenius, /. 53. f. 79. M. is a different spe- 

 cies. Schwaegrichen confirms this supposition, and has 



