Hypnum.] D I P L O PER I S T O M I. 159 



12. H. Schreberi ; leaves closely imbricated nearly erect elliptical 



apiculate concave entire faintly two nerved at the base, cap- 

 sule ovate cernuous, lid conical. (TAB. XXIV.) 



Hypnum Schreberi. WiUd. Fl. Berol p. 325. Dicks. Turn. 

 Muse. Hib.^p. 176. Smith, Fl. Brit. p. 1315. Engl. JBot. t. 1621. 

 Brid. Meth. p. 159. Funck, Deutschl. Moose, t. 40. / 20. Hook. FL 

 Scot. P. II. p. 143. Hobson, Brit. Mosses, v. 1. n. 71^ Drummond, 

 Muse. Scot. v. 1. n. 81. Arn. Disp. Muse. p. 60. Schwaegr. Suppl. v. 



I. P. //. p. 227. 



Hypnum curlandicum. Brid. Meth. p. 160. 



Hypnum purum. Ehrh. 



Hypnum compressuan. Schreb. 



Hypnum muticum. Swartz. Moug. et Nestl. n. '1*3. Dill. Muse. 

 t. 40. / 7. 



HAB. Woods and banks among bushes. 



This species has been confounded with H. purum, but it is 

 a longer, more slender, and compressed moss ; the stalks are 

 always of a fine reddish tint ; the leaves have a very faint and 

 short double nerve, and are of a brighter yellow-green 

 colour. 



13. H. moniliforme ; leaves closely imbricated rotundato- ovate 



obtuse very concave ventricose nerveless, capsule ovate 

 nearly erect. (TAB. XXIV.) 



Hypnum moniliforme. Wahl. Fl. Lapp. p. 376. t. 24. Hook. Fl 

 Scot. ed. 2. ined. Hobson, Brit. Mosses, v. 2. n. 57. Arn. Disp. 

 Muse. p. 60. 



Leskea julacea. Mohr.Brid. Meth. p. 145. 



Hypnum julaceum. Schwaegr. Suppl. t. 89. Funck, Deutschl. 

 Moose, t. 39. / 14. Brid. Meth. p. 162. Schwaegr. Suppl v. 1. P. 



II. p. 216. t. 89. 



Pterogonium? rotundifolium. Engl Bot. t. 2525. 

 HAB. On the ground, among mosses, in the south of 

 Ireland. Mr. Mackay. Not uncommon on rocks in the 

 Breadalbane mountains. 



This very curious plant, so nearly approximating in specific 

 character to H. molle, is very distinct from it as well as from 

 every other known Hypnum; it scarcely exceeds an inch in 

 length, and its foliage is so closely imbricated and concave as 

 to resemble Bryum argenteum, or B. Zierii. The colour is a 

 pale yellow-green ; the perichsetial leaves of a reddish brown, 

 lanceolate, nerveless. Fruitstalks about an inch long ; capsule 



