136 SYNOPSIS OF BRITISH MOSSES. 



On trunks of trees. May. 



York, Bristol, &c. 



d. Affinim. 



Caps, immersed or exserted^ 8-striate, generally to 

 base. Perist. teeth bigeminate, strongly reflexed when 

 dry. 



1. Internal perist. 8 or 16 cilia. 



270. 0. afane, Schrad. St. i— 1 inch, tufted, 

 branched. L. spreading, recurved, erecto-patent when 

 dry, oblong-lanceolate, with a blunt point, margin 

 revolute and slightly undulate, strongly papillose on 

 both sides. Caps, elliptic-oblong, somewhat exserted, 

 contracted when dry, striae narrow. Perist. 8 pale 

 teeth and 8 filiform cilia. Calyptra large, greenish- 

 yellow, hairy, hd convex, margin yellow, beak pale. 



Trees, walls, &c. Common. June, July. 



271. 0. fastigriatum, Brucli. St. longer, tufted with 

 fastigiate branches. L. broader, lanceolate, acuminate, 

 gradually tapering to a point, suberect. Caps, almost 

 pyriform, scarcely exserted, with broad strias, lid 

 broad, border reddish, long-beaked. Calyptra brown- 

 ish-yellow, slightly hairy. Perist. teeth 8, and 16 

 broad, short cilia. 



Solitary trees. May, June. 



Yorkshire, Sussex, &o. 



272. 0. speoiosum, Nees. St. 1 inch or more, tufted, 

 branched. L. spreading, recurved, elongate, lanceo- 

 late, somewhat pointed, papillose, margins recurved, 

 nerve thin. Caps, shortly exserted, elliptic-oblong, 

 faintly striate at summit, lid conical, beaked. Calyptra 

 large, yellowish, with long hairs. Perist. 8 yellowish 

 teeth, and 8 cilia. 



Trees. Rare. July, August. 



