114 APLOPERISTOMI. [Didymodon. 



Mnium purpureum. Linn. 



Dicranum purpurascens. Hedw. Sp. Muse. t. 35. Schwaegr. Suppl. 

 v. 1. p. 184. Brid. Meth. p. 69. 



Dicranum strictum. Smith, Fl Brit. p. 1218. Engl. Bot. t. 2294. 

 Trichostomum papillosum. Smith, Fl. Brit. p. 1238. Engl Bot. t. 

 2533. 



Bryum papiUosum. Dicks. Crypt. Fasc. 4. n. 12. t. 11. /. 5. 

 Dicranum papillosum. Brid. Meth. p. 102. 

 Bryum strictum et tenue. Dicks. 

 Bryum bipartitum. Dicks. Engl. Bot. t. 2357. 

 Dicranum Celsii. Hedw. Sp. Muse. t. 31. Engl. Bot. t. 2418. 

 Smith, Fl. Brit. p. 1221. Brid. Meth. p. 69. 

 Bryum Celsii. Linn. 



Dicranum intermedium. Hedw. Sp. Muse. t. 31. f. 1 6. Brid. 

 Meth. p. 69. Dill Muse. t. 49. / 51. 



HAB. On the ground, and on moist banks. 

 This plant is abundant in Europe, not being uncommon in 

 the warm parts, though seeming to prefer the colder regions. 

 In Iceland it covers the ground in large patches, as well as in 

 Greenland, whence Professor Geisecke has, among other cryp- 

 togamous plants, brought beautiful specimens of this. The 

 synonyms enumerated above can scarcely be doubted to belong 

 to this species. It varies extremely in the length of the stems, 

 but is very constant in the shape of its leaves, of the capsule 

 furnished with a struma, sulcated when dry, and of its conical 

 lid. The teeth of the peristome are so long, so narrow and 

 deeply divided, as to demand a removal of this plant to the 

 genus Didymodon ; and indeed, Sir James E. Smith has, from 

 the observations of Mr. Turner, actually described a variety of 

 it in that section of his genus Trichostomum which corresponds 

 to the Didymodon of Hedwig, under the name of T. papillosum. 

 2. D. inclinatum ; leaves bifarious from a sheathing base subulate, 

 capsule ovate inclined, lid conical. (TAB. XX.) 



Didymodon inclinatum. Swartz, Muse. Suec. Drummond, Muse. 

 Scot. v. 1. n. 53. Hook. Fl. Scot. P. II. p. 135. Arn. Disp. Muse. 

 p. 36. 



Bryum inclinatum. Dicks. 

 Swartzia inclinata. Hedw. St. Cr. v. 2. t. 27. 



Cynontodium inclinatum. Hedw. Sp. Muse. p. 58. Schwaegr. 

 Suppl. v. 1. p. 111. Funck, Deutschl. Moose, t. 14. n. 1. 

 Cynodon inclinatus. Brid. Meth. p. 98. 

 Grimmia inclinata. Smith, Fl. Brit. p. 1196. Engl Bot. t. 1824. 



