210 SYNOPSIS OF BRITISH MOSSES. 



when irj, ovate or oval, truncate when empty, lid 

 convexo-conical, obtuse. Monoicous. 



On decaying trunks and leaves. Summer. 



Heseltine Ghyll, Yorkshire, 1861 (Whitehead), Scot- 

 land. Eare. 



510. P. denticulatum, Linn. St. prostrate, with sub- 

 fasciculate branches. L. complanate ; at apex and base 

 of branches, small, broadly lanceolate ; in middle larger, 

 ovate oblong, apiculate, all inequilateral, sometimes 

 subserrnlate at apex, margin recurved below, shortly 

 2-nerved. Caps, arcuate, oblong, suberect or cernuous, 

 lid acutely conical. Monoicous. 



Subalpiae woods, banks, wet rocks, &c. Summer. 

 Var. y8. OBTUSIFOLIUM. L. elliptical, more or less 

 obtuse, slightly concave. 

 Alpine rocks. 



511. P. Borrerianum, Spruce (1846). St. prostrate. 

 Br. distichous, fasciculate or pinnate. L. complanate, 

 ovate-lanceolate, tapering to a long, slender, serrulate 

 point, sometimes oblique, nerveless, or faintly 2-nerved. 

 Caps, small, ovate, suberect or scarcely horizontal (not 

 pendulous). Outer and inner peristome pale yellow. 



(Our English moss is described in Bry. Brit, as H. 

 elegans, Hook., which is an exotic species not occurring 

 in Britain, having its leaves not tapering into a long, 

 slender point, and capsule pendulous, with a red, outer 

 peristome.) April. 



Shady banks and rocks, usually barren, but fruit has 

 been gathered at Arthog, North Wales, first by Mr. 

 Whitehead, and. since at several other places sparingly. 



Var. /S. COLLINUM, Wils. St, erect, tufted. L. sub- 

 secund. 



512. P. sylvaticum, Linn. St. longer, about 1 inch. 



