Mr. R. Spruce on the Musci and Hepaticse of Teesdale. 277 



On an ash-tree near the bridge across the Lune, between Mickle- 

 ton and Lonton ; very scarce. 



From O. affine, growing on the same tree, this diiFers as fol- 

 lows. Leaves usually of a deeper green. Vaginula clothed with 

 remarkably long hairs, which often reach half-way up the cap- 

 sule ; but naked in O. affine. Capsule much shorter and wider, 

 with a shorter neck, thick-skinned, the areolation wider, especially 

 near the mouth, the 8 striae with which it is marked far broader. 

 Cahjptra straw-coloured, more convex, concealing two-thirds of 

 the capsule (in O. affine only half). Operculum shorter. Cilia 

 consisting of fewer cellules. Seeds green ; in O. affine pale bro^vn. 



My specimens uniformly show 16 cilia, but Bruch and Schim- 

 per remark : " Le nombre des cils du peristome interieur varie 

 de 8 a 16, et on trouve souvent des echantillons oii cette varia- 

 tion a lieu sur le meme individu." 



O. pallens, Bruch, which I have found near York, agrees with 

 O. stramineum in the number of cilia, but differs in its obtuse 

 upper leaves and their wider areolation, smooth vaginula, smaller 

 calyptra and elongated capsule. 



139. Phascum alternifolium, Schwaegr. On a turf-capped wall 

 below the High Force plantation. 



I cannot satisfy myself that this is specifically distinct from 

 Ph. suhulatum, Hedw. The character which appears to be chiefly 

 relied on for their separation in the ' Bryol. Europ.^ is founded 

 on the male inflorescence; the antheridia in the former being 

 enclosed in gemmce dispersed along the stem, and in the latter free 

 in the axils of the perichsetial leaves. I must trust to future obser-p 

 vation to decide whether or not this difference is to be accounted 

 specific. 



140. Physcomitrium ericetorum, De Notaris. (Gymnost. fascicu- 

 lare, H. and T.) Caldron Snout. 



141. Folytrickum aloides, Hedw. Frequent. 



142. — alpinum, L. Abundant in heathy situations. 



143. — commune, L. Heaths. 



144. — gracile, Menzies. Near Lower Cronkley. 



145. — juniperinum, Willd. Heaths. 



146. — nanum, Hedw. In several places. 



147. — piliferum, Schreb. On the moor between the High Force 

 inn and Cronkley Bridge. 



148. — undulatum, Hedw. Common. 



149. — urnigerum, L. Near the High Force inn. 



150. Pottia truncata, B. and S. (Gymnostomum truncatulum. 

 Muse. Brit.) In cultivated ground. 



151. Pterogonium gracile, Sw. Falcon Clints ; barren. 



152. Splachnum mnioides, L. fil. On fallen rocks at the base of 

 Holwick Scarr ; between Cronkley Scarr and the Tees; Meldon 

 Hill, on the Westmoreland side of Maize beck. 



