HYPNUM. HI 



tint> to a bright and pale yellow in some situations. The nerve 

 is sometimes obsolete, rarely half the length of the leaf, 

 more frequently forked or double. Dr. Stokes' specimens 

 of H.Jluviatile, figured in Engl. Bot., are H* palustre ; 

 and we do not know that the truejluviatile has ever been 

 found in Britain. Such is the case also with the H. adna- 

 turn of EngL Bot. The true H. adnatum has a differently 

 shaped leaf, and is, we believe, altogether an American 

 plant. 



62. H. aduncum ; leaves falcato-secund, lanceolate-subulate, 

 concave, or almost semicylindrical, entire, the nerve disap- 

 pearing below the summit ; capsule oblongo-ovate, curved, 

 cernuous; lid conical. (TAB. XXVI.) 

 . revolvcns ; leaves narrow, very much falcate: 

 H. aduncum. Linn. Sp. PL p. 1592. Hedw. St. Cr. v.4. f.24. Turn. 

 Muse. Hib. p. 189. Smith Fl. Brit. p. 1327. H. revolvens. Swart* 

 Muse. Suec. Turn. Muse. Hib. p. 188. Engl. Bot. t. 20J3. DHL 

 Muse. t.37.f.26. 



$. rugosum ; leaves wider, less falcate, somewhat rugose. 

 H. rugosum. Linn. Mant.p. 131. (according to Smith.) Engl. Bot. 

 t. 2250. (not of Hedw. nor Schwaegr.} H. lycopodioides. Schwaegr* 

 Suppl. pars 2. p. 300. Dill. Muse. t. 37. f. 24. 

 HAB. Bogs, common. 



We have but little hesitation in -uniting the three species 

 as they have hitherto been considered, aduncum^ r evolvent , 

 and rugosum : and Schwaegrichen, who has kept them 

 separate in his late valuable Supplement to Hedwig's Spe- 

 cies Muscorum, yet says of them, " inter se pari affinitate 

 conjunguntur et ulteriorem disquisitionem in loco natali, in 

 quo copiose inveniuntur, exiguunt." H. revolvens scarcely 

 differs from the common appearance of aduncum^ but in its 

 deeper almost purple-black colour, and generally more fal- 

 cate leaves; whilst these are in the var. ntgosum much 

 broader, somewhat wrinkled, especially when dry, and the 

 nerve we have remarked to be usually longer. In size and 

 general habit this variety comes near H. scorpioides, but 

 that has no nerve. 



H. uncinatum ; leaves falcato-secund, lanceolato-subulate, 

 serrated, striated, nerve disappearing below the point; cap- 

 sule cylindrical, curved, cernuous; lid conical. (TAB. XXVI.) 

 H. uncinatum. Hedw. St. Cr. v. 4. t. 5. Turn. Muse. Hib. p. 190. 

 Engl. Bot. 1. 1600. Moug. et Nestl. n. 335. 



HAB. Moist banks and walls, principally in subalpine 

 countries. 



The slender stems, which are pinnated, the long and 



