narrow linear, flexuose, with an obscure nerve, margin plane, sometimes toothed near apex; per. l. with a pale thin blade, nerve excurrent into a long rough bristle, and the innermost divided at apex into long jointed cilia; caps. immersed, ovate, oblique, gibbous; lid conical pointed; per. teeth white.
Shady mountainous rocks. VIII.
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, sub-
