Sub-genus IV. Brachythecium. Plants upright or prone, irregularly branched; l. silky, patent or sub-secund, more or less decurrent, thinly nerved, striate; areolæ narrowly hexagono-*rhomboid, generally quadrate at basal angles; caps. ovate, sub-globose, or oblong, often turgid, lid conical.
a. Seta smooth.
436. H. (Brachythecium) Mildeanum. Schp. St. ½ to 1in. erect branched; l. sub-erect, long lanceolate, gradually tapering from a broadish base into a long slender point, almost piliferous, plicate when dry, margins plane, thinly nerved more than half way; areolæ long and narrow, broader at base and quadrate at basal angles; caps. obovate-oblong or unsymmetrical, much curved cernuous, constricted at mouth when dry, on a red twisted seta; lid conical, tapering to a blunt apex, tipped with an apiculus.
Sands. Southport, Fifeshire, Dublin, Cornwall. X. XI.
437. H. (Brachythecium) SALEBROSUM. Hoffm. St. 1-2in. procumbent sub-pinnate; l. shortly ovate-acuminate, serrulate, only slightly striate, nerved more than half-way; caps. ovate cernuous curved, lid conical, scarcely beaked: monoicous.
Trees. XI.
Near Kirkham Abbey, Yorks. (R. Spruce); Sussex (Mitten).
438. H. (Brachythecium) GLAREOSUM. Bruch. St. about 2in. sub-procumbent, branches sometimes sub-pinnate; l. erecto-patent from an ovate base, gradually tapering into a
