ORTHOTRICHUM. 179 



pointed Bristle Moss.) Stems erect, very short; leaves 

 lanceolato-acuminate, diaphanous at the points; calyptra 

 slightly hairy. — Eng.Fl.p. 54; Mull. 8yn.pt. I. p. 694. 



Trunks of trees and similar situations, especially near the 

 sea. In the neighbourhood of Edinburgh, pretty abun- 

 dant. Tr. T^eb. It seems to prefer the chinks of old trees, 

 close to the ground, as a place of growth, and is easily dis- 

 tinguished by the diaphanous points of the leaves. 



8. Orthotrichum rivulare, Sm. {River Bristle Moss.) 

 Stems procumbent ; leaves broadly lanceolate, obtuse ; cilia 

 setaceous; calyptra glabrous. — B//g. Fl. p. 55; MUll. Si/n. 

 pt. l.p. 699. 



On rocks and stones in streams. Fr. August. This 

 species will be readily recognized by the length of its stems, 

 attaining a height of two or three inches, which, with their 

 dark lurid-green colour, remind one of the Lattice Moss 

 (p. 163). It is not common on the Continent. 



9. Orthotrichum Sprucei, Montague. {Spriwe's Bris- 

 tle 3Ioss.) Stems shghtly branched; leaves lanceolate, li- 

 gulate, rounded and shortly apiculate ; theca immersed, sub- 

 globose or pyriform ; peristome with eight transparent ciha. 

 —Mail. Syn.pt. 1. i9. 699. 



Alhed to the preceding and to var. pumilum of 0. affine, 



K 



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