1. Inner perist. fugacious. 262. Z. CONOIDEUS. Dicks. St. very short, cæspitose, fastigiate, densely radiculose; l. somewhat spreading, not recurved, widely lanceolate, with plane margins, and nerved nearly to apex; caps. pyriform, tapering below, eight-striate, lid with a long straight beak; perist., outer eight short recurved teeth, inner eight yellowish cilia, often absent: dioicous. Trees. S. I. E. V. 2. Inner perist. persistent. 263. Z. FORSTERI. Dicks. St. ¼–½in. densely tufted, with whitish radicles; l. erecto-patent, elliptic-lanceolate, nerved to apex or slightly excurrent; areolæ hexagonal (not as in all the previous ones, dot-like), oblong and diaphanous at base; caps. pyriform, striate; lid with a long inclined beak; perist., outer eight acute bi-geminate teeth, inner eight alternating cilia: monoicous. Trees. South of England, rare. Spring. 264. Z. GRACILIS. Wils. MS. St. 1in. or more, tufted, branched; l. lanceolate twisted when dry, with plane margins, and denticulate near the apex; areolæ close and punctate above, large and pellucid below. Old walls. Malham (J. Nowell) in fr., Sept., 1866. [I have no specimen in fruit.] 38. TETRAPHIS. HEDW. 265. T. PELLUCIDA. Hed. St. ½–1in.; l. lower, ovate-acuminate, nerved, reddish, upper larger ovate-lanceolate entire, nerve ceasing below apex, margins plane; stems bearing gemmiferous cups, l. of which are obcordate; caps. (fruit not found in England) elliptical, with a red border at mouth, on a long reddish seta. Decaying stumps and roots of trees, common. VIII. IX. 39. TETRODONTIUM. SCHW. 266. T. BROWNIANUM. Schwg. St. almost none, with long linear radical leaves or ramuli; per. l. ovate-acuminate, entire, shortly and faintly nerved; caps. oval-oblong, lid with an acute oblique beak. Sandstone rocks. III. IV. (Wilson says VII.) 40. BUXBAUMIA. HALLER. 267. B. APHYLLA. Hall. “Stem almost none, buried; l. lower roundish, deeply toothed, upper fringed with long ciliary processes; caps. plano-convex, roundish ovate, reddish; outer perist. irregularly sub-divided, thick and cellular.” [Wilson.] Scotland, Yorkshire, &c.; rare. V. 268. B. INDUSIATA. Brid. “Resembling the last, but caps. more erect, not flattened on the upper surface, of uniform texture and yellowish green colour, covered with a soft membrane, which ruptures on the upper surface, the margins rolling back, somewhat like the indusium of a fern; annulus narrow.” [Dr. Braithwaite, Jour. Bot., VIII., 226.] On the ground and rotten trunks, chiefly in pine woods. Near Ballater, 1847 (Cruikshank); Craigendinnie Hill, Aboyne, 1867 (Dickie and Roy). 41. DIPHYSCIUM. W. & M.