276. P. aloides. Brid. St. less than 1-in., branched at apex; l. rigid spreading, lanceolate, sheathing, serrate on margin and back; caps. erect, somewhat ovate-urceolate or cylindrical; lid conical beaked; columella with four wings; hairs of calyp. whitish.
Moist banks. X. XI.
var. β. minus. smaller generally; "hairs of calyp. confluent
below capsule."
277. P. urnigerum. Brid. St. 1-4in. branched above,
reddish below; l. spreading linear-lanceolate from a short
broader sheathing base, acute serrate; caps. narrowly
cylindrical regular papillose, lid convex with a short beak.
Mountainous banks and sides of streams. X. XI.
var. β. crassum. l. broader, caps, oval-oblong, lid with a longer beak.
278. P. alpinum. Brid. St. much longer, branched above, decumbent below; l. linear-lanceolate from a sheathing base, gradually tapering, serrate, back spinulose, margin inflexed; caps. generally inclined, ovoid, tumid, smooth, lid small, with a long curved beak.
Sub-alpine localities. E. S. I. VI.
var. β. arcticum. caps. oblong subcylindrical.
δ. campanulatum. st. short, l. narrower and shorter;
caps. apophysate; calyp. campanulate.
45. POLYTRICHUM. Brid.
A. Caps. six-angled; apophysis indistinct.
279. P. sexangulare. Hoppe. Barren st. 2-6in., fertile shorter; l. short incurved rigid, linear-lanceolate
