Hypnum.-} D I P L O P E R I S T O M I. 155 



p. 142. Smith, Fl Brit. p. 1280. Engl Bot. t. 1274. Hook. Fl. 

 Scot. P. II. p. 142. Hobson,Brit. Mosses, v. 2. n. 55. Am. Disp. 

 Muse. p. 67. 



Hypnum inundatum. Dicks Turn. Muse. Hib Smith, Fl. Brit. 



p. 1282. Engl Bot. t. 1922. 



Leskea polycarpa. Ehrh. Crypt Hedw.Moug. et Nestl. n. 224. 

 Funck, Deutschl. Moose, t. 35. f. 4. Brid. Meth. p. 146. Schwaegr. 

 Suppl. v. 1. P. II. p. 171. 



Hypnum circinnatum. Brid. Meth. p. 165. 

 HAB. Trunks of trees, near the ground. 

 Whole plant much crowded in its growth, of a very lurid 

 colour. Leaves opaque (often falcato-secund, so that Mr. 

 Arnott has, perhaps with justice, arranged it with the species 

 " foliis secundis ;") the margins recurved ; in which particulars 

 it differs from the Leskea paludosa of Hedwig, as well as in the 

 nerve, which in the latter disappears before it reaches the point. 



7. H. tenellum ; leaves fasciculate erect lanceolato-subulate entire 



their nerve reaching to the summit, capsule ovate cernuous, 

 lid rostrate. (TAB. XXIV.) 



Hypnum tenellum. Dicks. Crypt. Fasc. 4. t. 11. / 12. Turn. 

 Muse. Hib. p. 170. Smith, Fl. Brit. p. 1308. Engl Bot. t. 1859. 

 (figure of the leaf incorrect.} Hook. Fl. Scot. P. II. p. 142. Drum- 

 mond, Muse. Scot. v. 2. n. 63. Am. Disp. Muse. p. 62. 



Hypnum algerianum. Brid. Meth. p. 168. Schwaegr. Suppl. v. 2. 

 p. 161. t. 144. 



HAB. On rocks, especially such as are calcareous, and on 



old walls. 



This moss is but little known to continental writers, as ap- 

 pears by Mohr's observation, that it agrees well with H. serpens, 

 and by Schwaegrichen's description, where he says that its 

 nerve reaches only half way up the leaf. From H. serpens our 

 plant differs in its mode of growth, its fascicled branches, the 

 shape and texture of the leaves, and rostrate lid. Its nearest 

 affinity is with H. populeum, from which it may be known by 

 its narrower, entire leaves, as well as its long operculum. The 

 representation of the leaf in English Botany is extremely in- 

 correct, and the nerve is wholly omitted. 



8. H. serpens ; leaves ovato-lanceolate rather obtuse patent entire 



their nerve for the most part reaching to the summit, capsule 

 cylindrical curved cernuous, lid conical. (TAB. XXIV.) 



