Bryum.1 D I P L O P E R I S T O M I. 199 



scope, large reticulations. It is strange that Schwaegrichen 

 should refer for his B. erythrocarpum to Mohr, who says only 

 upon that plant "sub nomine S. erythrocarpi, Brid. Suppl. 

 MSS. etiam plantulam accepimus in monte Hube, prope Eibeck, 

 a Bridelio lectam, quam a nostro ( B. carneo) discernere nequi- 

 mus." We on the other hand, have specimens perfectly agree- 

 ing with Schwaegrichen's figure of B. erythrocarpum, which we 

 consider only as slender varieties of B. ccespiticium ; and that 

 author himself says, " differt a B. ccespiticio caule tenero, folio- 

 rum forma et nervo parum tantum emergente, colore thecae 

 rufo." 



10. B. argenteum; stems branched, leaves closely imbricated 



broadly ovate suddenly and sharply acuminated subserrulate 

 very concave nerve disappearing below the point, capsule 

 ovato-pyriform pendulous. (TAB. XXIX.) 



Bryum argenteum. Linn. Sp. PL p. 1586. Turn. Muse. Hib. p. 

 122. Smith, FL Brit. p. 1355. Engl Bot. t. 1602. Moug. et Nestl. 

 n. 133. Funck, Deutschl Moose, t. 29. f. 1. Brid. Meth.' p. 118. 

 Hook. Fl. Scot. P. II. p. 150. Hobson, Brit. Mosses, v. 1. n. 98. 

 Drummond, Muse. Scot. v. 2. n. 90. Am. Disp. Muse. p. 45 Dill. 

 Muse. t. 50. / 62. 



Bryum lanatum. Beauv. Brid. 



HAB. On the ground, and on walls and roofs of houses, 



very common. 



This plant has a remarkably silvery appearance, from the 

 upper part of the leaves being scariose and white, whilst the 

 lower part is green. The acuminated points, especially when 

 dry, are patent and resemble hairs. The whole leaf is thin and 

 reticulated, and very different from B. julaceum, with which 

 foreign authors have confounded it. 



11. B. Zierii; stems branched, leaves closely imbricated more 



or less broadly ovate acuminate very concave reticidated en- 

 tire nerve running nearly to the point, capsule clavate cernu- 

 ous. (TAB. XXIX.) 



Bryum Zierii. Dicks. PL Crypt. Fasc. 1. t. 4. / 10. Hedw. Sp. 

 Muse, t., 44. /. 14. Turn. Muse. Hib. p. 123. Smith, Fl. Brit. p. 

 1356. Engl Bot. t. 1021. Funck, Deutschl. Moose, t. 29. / 2. 

 Hook. FL Scot. P. II. p. 150. Drummond, Muse. Scot. v. 2. n. 91. 

 Arn. Disp. Muse. p. 45. 



HAB. Mountains of England, Scotland, and Ireland, 



N4 



