A Synopsis of the British Mosses / Containing Descriptions of All the Genera and Species, (With Localities of the Rarer Ones) Found in Great Britain and Ireland, Based Upon Wilson's "Bryologia Britannica," Schimper's "Synopsis," Etc.

by Charles C. P. Hobkirk

42. ATRICHUM. P. Beauv.

a. Monoicous.

270. A. undulatum. P. Beauv. St. 1–2in. l. ligulate, margin undulate, thickened, with bi cuspid spinulose teeth, which also occur on back near apex, where lamellate nerve ceases; caps. cylindrical curved; lid with a long curved beak.

Grassy places, common. X. XI.

var. β. attenuatum. l. narrow, more crisped when dry; caps. smaller.

b. Dioicous.

271. A. angustatum. Brid. St. shorter, l. narrower, densely reticulate, serrate at apex only, less hispid beneath, with numerous lamellæ on nerve; caps. sub-erect cylindrical straight or curved, lid dark purple, shortly rostrate. [Schp. Syn. p. 434.]

Bare sandy ground, heaths, &c. Winter.

Braes of Doune, fr. (McKinlay); Sussex—male (Mitten).

272. A. tenellum. Roth. St. short; l. elongate, oblong-lanceolate, upper ones narrowly lingulate, scarcely undulate, smooth beneath, margins dentate below the middle, subcirrhate when dry, nerve thinly lamellate; caps. obovate-oblong, sub-cernuous, lid with a long beak; per. teeth large. [Bry. Eur. IV., 412. Syn. 435.]

Bare moist sandy places, and dried-up pools. Autumn.

Loch Goil Head; Killin, Perthshire.

273. A. crispum. James. (laxifolium, Wils. MS.) St. simple, slender; l. lower small somewhat spathulate; upper much larger oblong-lanceolate, slightly undulate, border thickened, toothed; nerve reaching apex, scarcely lamellate; areolæ larger, hexagonal or rounded; caps. obovate-oblong, sub-erect or inclined, wide-mouthed, teeth very short irregular, seta red. [Dr. Braithwaite, Jour. Bot., VIII., 225.]

Lancashire; Oakmere, Cheshire; Saddleworth, Yorkshire; Dartmoor. Male plant only found in Britain.