184 DIPLOPERISTOMI. 



joined to H. fluviatile, a plant we believe unknown to Britain, 

 and appearing, as far as we can judge from the figure in the 

 Species Muscorum, very unlike H. fallax. H, falcatum of 

 Schwaegr. Suppl. v. 3. t. 145. likewise seems little different 

 from our plant, which, when growing in waters impregnated 

 with calcareous matter, is seen to have the stems bristly at the 

 base, from the strong nerves that remain after the decay of the 

 rest of the leaf. 



56. H. atro-virens ; stems variously branched procumbent, leaves 

 all of them slightly secund broadly ovate with an attenuated 

 obtuse point, the nerve running nearly to the summit, capsule 

 ovate cernuous, lid conical. (TAB. XXVI.) 



Hypnum atro-virens. Dicks. PL Crypt. Fasc. 2. p. 10. Turn. 

 Muse. Hib. p. 169. Smith, Fl Brit. p. 1307. Engl Sot. t. 2422. 

 Hook. Fl. Scot. P. II. p. 147. Arn. Disp. Muse. p. 67. 



Hypnum filamentosum. Dicks. PL Crypt. Fasc. 2. p. 11. Smith, 

 FL Brit. p. 1308. Brid. Meth. p. 167. 



Hypnum attenuatum. Dicks, Engl. Bot. t. 2420. (not Leskea 

 attenuata, Hedvr.) 



Leskea incurvata. Hedw. Sp. Muse. t. 53. (not H. incurvatum, 

 Mohr and Schwaegr.) Funck, Deutschl. Moose, t. 36. f. 7. Moug. et 

 NestL n. 421. 



HAB. Trees and rocks in mountainous countries. 

 Sir J. E. Smith, on the authority of Dillenius, has attributed 

 to H. atro-virens a subulate lid ; but the plant referred to in the 

 Hist. Muse. t. 43. f. 67. is a very distinct species, from Virginia, 

 (not Patagonia, as mentioned by mistake in Engl. JBot.) H. 

 filamentosum of Dickson differs in no particular from our plant, 

 nor does the H. attenuatum of the same author, as we have 

 ascertained by an examination of his own specimens in Mr. 

 Turner's Herbarium. Equally authentic specimens, viz. from 

 the younger Hedwig, prove our plant to be the same as his 

 Leskea incurvata, but we have preferred the older name given 

 by our countryman. We have been greatly inclined to add to 

 our synonyms H. fluviatile, which 1 accords so well in its foliage ; 

 but that has more distantly placed leaves, and a longer capsule. 

 Our plant, likewise, bears no inconsiderable resemblance in 

 many points to H. jfilicinum ; it differs, however, in being 

 procumbent, in its loose and straggling ramification, more 



