Hypnum.-} D I PL O PERI STOMI. 187 



his valuable Supplement to Hedwig's Species Muscorum, yet 

 says of them " inter se pari aflmitate conjunguntur et ulteriorem 

 disquisition em in loco natali, in quo copiose inveniuntur, exi- 

 gunt." H. revolvens scarcely differs from the common ap- 

 pearance of aduncum, but in its deeper, almost purple-black 

 colour, and generally more falcate leaves ; whilst these are in 

 the var. rugosum much broader, somewhat wrinkled, especially 

 when dry, and the nerve we have remarked to be usually 

 longer. In size and general habit this variety approaches H. 

 scorpioides, but that has no nerve. 



60. H. uncinatum ; leaves falcato-secund lanceolato-subulate ser- 

 rated striated the nerve disappearing below the point, cap- 

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



Hypnum uncinatum. Hedw. St. Cr. v. 4. t. 5. Turn. Muse. Hib. 

 p. 190. Smith, FL Brit. p. 1328. Engl Bot. t, 1600. Moug. et 

 Nestl. n. 335. Funck, Deutschl. Moose, t. 53. / 82. Schwaegr. Suppl 

 v.l. P. II. p. 304. Brid. Meth. p. 180. Hobson, Brit. Mosses, v. 1. 

 n. 89. Drummond, Muse. Scot. v. 2. n. 82. Arn. Disp. Muse. p. 68. 

 Hook. Fl. Scot. P. II. p. 147. 



HAB. Moist banks and walls, principally in subalpine 



countries. 



The slender stems, which are pinnated, the long and uncin- 

 ate leaves, and brighter colour, together with their striation and 

 serratures, abundantly distinguish this from H. aduncum and 

 all its affinities. 



61. H. rugulosum ; leaves secund ovato-lanceolate serrated nearly 



plane crisped transversely when dry margins recurved the 

 nerve reaching half way. (TAB. XXVI.) 



Hypnum rugulosum. Web. et Mohr, Fl. Cr. Germ. p. 366. Moug. 

 et Nestl. n. 231. Arn. Disp. Muse. p. 68. 



Hypnum rugosum. Hedw. Sp. Muse. p. 293. St. Cr. v. 4. t. 23. f. 

 A. (leaf only.) Schwaegr. Suppl. v. 1. P. //. p. 301. Brid. Meth. p. 

 68. 



HAB. On the ground in heathy places in Norfolk. Mr. 

 Eagle. On Ben Lawers, and on Ben Voirlich, by Loch 

 Lomond side ; also on rocks in Breadalbane, and near 

 Kenmore.- Mr. Arnott. 



Plant from two to four inches, creeping in dense tufts upon 

 the ground, of a yellow green colour, often bordering on brown. 



