168 DIPLOPERISTOMI. 



ever, are longer, more acuminate, softer and more patent. 

 We must confess that the characters of these two mosses, and //. 

 nitens, and H. salebrosum, approximate so nearly as to render 

 the discrimination between them a most difficult task; nor 

 should we he surprised to find that future observations prove 

 them to be varieties of the same species produced by different 

 circumstances of growth. 



* * Leaves serrated. 

 f Stems below bare of leaves. 



28. H. alopecurum ; stems erect below simple and naked fascicled 

 above, leaves concave ovate elliptical acute serrated the nerve 

 running nearly to the point margin reflexed, capsule ovate 

 cernuous, lid rostrate. (TAB. XXV.) 



Hypnum alopecurum. Linn. Sp. PL p. 1594. Turn. Muse. Hib. 

 p. 163. Smith, FL Brit. p. 132. Engl Bot. t. 1182. Moug. et 

 Nestl. n. 144. Funck, DeutschL Moose, t. 45. /. 51. Brid. Meth. p, 

 164. Schwaegr. Suppl. v. 1. P. //. p. 265. Hook. FL Scot. P. II. 

 p. 144. Hobson, Brit. Mosses, v. 1. n. 77. Drummond, Muse. Scot. v. 

 1. n. 86. Arn. Disp. Muse. p. 59. DHL Muse. t. 41. / 49. 



HAB. Woods and shaded banks, common. 

 This and the following, which are among the largest of our 

 Hypna, resemble several species from New Holland in their 

 upright stems which are almost naked below, and thickly 

 fascicled with branches at the summit. A variety of this plant, 

 growing in running water, departs from its common appearance 

 by being branched from the very base, with the branches more 

 elongated, and having the leaves more closely set and shorter. 



29. H. dendroides ; stems erect below simple and naked fascicled 



above, leaves ovate often more or less lanceolate serrated at 

 the point the nerve reaching nearly to the summit, capsule 

 ovato-cylindrical, lid rostrate. (TAB. XXV.) 



Hypnum dendroides. Linn. Sp. PL p. 1593. Turn. Muse. Hib. p. 

 138. Smith, FL Brit. p. 1283. Engl. Bot. t. 1565. Hook. FL Scot. 

 P. II. p. 144. Hobson, Brit. Mosses, v. 1. n. 78. Drummond, Muse, 

 Scot. v. I. n. 85. Arn. Disp. Muse. p. 59. 



Leskea dendroides. Hedw. Sp. Muse. WahL 



Neckera dendroides. Swartz. 



