HYPNUM. 113 



hified leaves as two-nerved at the base, which we never 

 could find to be the case in our specimens. It appears to 

 be a species but little understood upon the Continent. 



H. sileslanum ; leaves loosely imbricated, secund, narrow- 

 lanceolate, acuminated, serrated, nerveless, or very obscurely 

 two-nerved; capsule subcylindrical, erecto-cernuous j lid 

 conical, obtuse. (TAB. XXVII.) 



H. silesianum. Pal de Beauv. Prodr. p. 70. Web. et Mohr Fl Cr. 

 Germ. p. 343. Engl. Bot. t. 2016. Schwaegr. Suppl t. 94. Moug. et 

 Nestl. n. 425. Leskea Seligeri. Brid. 



HAB. Summit of Ben Luyal, in Sutherland. 



This plant is scarcely to be known from some of the 

 small varieties of H. cuprcssiforme but by its less falcate, 

 more serrated, narrower leaves, and shorter lid. Indeed the 

 serratures reach down nearly the whole length of the mar- 

 gins ; but then we have observed them to be more or less 

 apparent in different specimens. Schwaegrichen says that 

 the fruitstalks arise from near the base of the stem, a cir-' 

 cumstance which, though general, is not constant. We 

 know of no habitat but that above given ; nevertheless it is 

 in the alpine parts of Switzerland extremely common, re- 

 taining all the characters we have given to it. 



H. cnpressiforme ; leaves closely imbricated, more or less 

 falcato-secund, lanceolate, acuminated, entire except at the 

 points, which are usually serrated, very faintly two-nerved 

 at the base ; capsule cylindrical, erecto-cernuous ; lid co- 

 nical, with a point. (TAB. XXVII.) 



. vnlgaris ; stems broad, semicylindrical ; leaves falcato-secund. 



H. cupressiforme. Linn. Sp. Pi. p. 1592. Hedw. St. Cr. v. 4. t. 23. 

 Turn. Muse. Hib, p. 193. Engl. Bot. t. 1860. Moug. et Nestl. n. 229. 

 H. nigro-viride. Dicks. Turn. Smith. DHL Muse. t. 37- f. 23. and 

 t. 41./.53. 



/?. compressum ; stems slender, compressed j leaves falcato-secund. 



H. compressum. Linn. Mant. v. 2. p. 310. Dill. Muse. t. 36. f. 22. 



y. tenue; stems very slender; leaves very slightly curved, narrow- 

 lanceolate, quite entire. 



H. polyanthcs. Engl. BoLt. 1664. (not Leskea polyanthos. Hedw.) 

 Turn. Muse. Hib. p. 137. 



HAB. On banks and trunks of trees, extremely common ; 

 /3. particularly in shady woods ; y. mostly on trees. 



So sportive is the present plant that it is scarcely possible 

 to define in a few words the marks belonging to any of the 

 varieties. The most striking one however is our y, the 

 H. polyanthos of British authors, but not the Leskea po- 

 lyanthos of Hedwig, which is a true Leskea* At first sight 



