Mr. R. Spruce on the Musci and Hcpaticic 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 differs as fol- 

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

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

 sule ; but naked in 0. affine. Capsule much shorter and ^vider, 

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

 near the mouth, the 8 striw 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 fcAver cellules. Seeds green ; in 0. affine pale brown. 



^ly specimens uniformly show 16 cilia, but Bruch and Schim- 

 per remark : " Le nombre des cils du peristome iuteriem- varie 

 de 8 a 16, et on trouve souvent des echautiUons oil cette varia- 

 tion a lieu sm- le meme individu." 



0. pollens, Bruch, which I have foiind 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 

 calj^tra and elongated capsule. 



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

 below the High Force plantation. 



I cannot satisiy- myself that this is specifically distinct from 

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

 rehed on for their separation in the ' Bryol. Europ/ is foimded 

 on the male inflorescence ; the antheridia in the former being 

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

 in the axils of the pericha?iial leaves. I must trust to futm*e obser- 

 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. Polytrichum 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. — pilifenim, Schreb. On the moor betv.een the High Force 

 inn and Cronkley Bridge. 



148. — undulatum, Hedw. Common. 



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



150. Pottia tnincata, B. and S. (Gymuostomum truncatulum, 

 Muse. Brit.) In cultivated ground. 



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



152. Splacknum tnnioides, 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. 



