Dicranum.] A PL O PER I S T O M I. 91 



Dicranum adiantoides. Swartz, Muse. Suec. p. 31. Turn. Muse. 

 Hib. p. 57. Smith, Fl. Brit. p. 1234. Moug. et Nestl. n. 25. Hook. FL 

 Scot. P. II. p. 131. Am. Disp. Muse. p. 28. Hobson, Brit. Mosses, v. 

 2. n. 34. Drummond, Muse. Scot. v. I. n. 32. 



Fissidens adiantoides. Hedw. St. Cr. v. 3. t. 26. Schwaegr. Suppl. 

 v. 1. P. II. p. 10. Funck, Deutschl. Moose, t. 22. n. 6. Brid. Meth. 

 p. 191. and F. grandifrons of the same author, and F. dubius of Beauv. 



Hypnum adiantoides. Linn. Sp. PL p. 1588. Enyl. Bot. t. 264. 

 Dill Muse. t. 34. / 3. 



HAB. Moist banks, wet pastures, and bogs. 



From the last described species the present differs in being 

 very much larger, frequently two inches long, branched by in- 

 novations, especially when growing in wet places, where our 

 larger specimen was gathered by our kind friend, Mr. Dalton. 

 The leaves are nearly lanceolate, more or less serrulate at the 

 point ; the base of the fruitstalk is surrounded by a remarkably 

 scaly perichaetium, whose leaves are very unlike the cauline 

 ones, being ovate, concave, convolute, nerveless, except at the 

 acuminated point, which has a vertical direction. The base of 

 this perichaetium is inserted laterally upon the stem of the 

 plant, and always throws out reddish roots, exactly as the fol- 

 lowing species, from which it differs scarcely in any thing but 

 in the point of insertion of the fruit. The fruitstalks are 

 flexuose, the capsule inclined, and the lid subulate. Wahlen- 

 berg considers this as a variety of the following, perhaps not 

 unjustly. 

 3. D. taxifolium; fruitstalks radicular, perichsetial leaves ovate 



sheathing involute pointed. (TAB. XVI.) 



Dicranum taxifolium. Swartz, Muse. Suec. p. 31. Turn. Muse. 



Hib. p. 56. Smith, Fl. Brit. p. 1233. Hobson, Brit. Mosses, v. I. n. 



35. Drummond, Muse. Scot. v. 1. n. 31. Moug. et Nestl. n. 217. 



Hook. Fl. Scot. P. II. p. 131. Arn. Disp. Muse. p. 28. 



Fissidens taxifolius. Hedw. Sp. Muse. t. 39. Schwaegr. Suppl. v. 



1. P. II. p. 10. Brid. Meth. p. 189. 



Hypnum taxifolium. Linn. Sp. PL p. 1587. Engl. Bot. t. 416 



Dill. Muse. t. 34. / 2. 



HAB. Moist banks. 



Plant from one half to three quarters of an inch in height, 

 root thickly tufted, and sending up many stems. Fruit at the 

 very base of the stems, and from among the roots ; enveloped 



