10. LEPIDÒZIA, Dumort. ([Pl. 24.])
Leaves small, incubous, palmately 2–4-cleft or -parted; underleaves similar, often smaller. Diœcious or rarely monœcious. Fruit terminal on short branches from the under side of the stem. Involucral leaves small, appressed, concave, 2–4-cleft; perianth elongated, ovate-subulate or narrowly fusiform, obtusely triangular above, entire or denticulate. Calyptra included, pyriform or oblong. Capsule oblong-cylindric. Spores minute, smooth or roughish. Antheridia large, pedicelled, solitary in the axils of 2-cleft spicate leaves. (Name from λεπίς, a scale, and ὄζος, a shoot, for the scale-like foliage.)
1. L. réptans, Dumort. ([Pl. 24.]) Creeping, pinnately compound, the branches often flagellate; leaves decurved, subquadrate, 3–4-cleft; involucral leaves ovate, truncate, unequally 4-toothed; perianth incurved, dentate.—On the ground and rotten wood, N. J., and common northward. (Eu.)
2. L. setàcea, Mitt. Leaves deeply 2–3-cleft or -parted, incurved, the lobes subulate, formed of a somewhat double series of cells; underleaves similar; perianth ciliate. (Jungermannia setacea, Web.)—On the ground and rotten wood; common. Resembling the next in its leaves, but smaller and brownish. (Eu.)
11. BLEPHARÓSTOMA, Dumort. ([Pl. 25.])
Leaves transverse or slightly incubous, 3–4-parted, the divisions capillary; underleaves smaller, mostly 2–3-parted. Diœcious or monœcious. Fruit terminal. Involucral leaves numerous, verticillate, deeply 4-cleft; perianth exserted, pyriform-cylindric, laciniate. Calyptra short, oblong, bilabiate. Capsule cylindric-oblong. Elaters large, very obtuse. Spores large, smooth. Antheridia solitary in the axils of leaf-like bracts. (Name from βλέφαρον, an eyelid, and στόμα, mouth, in allusion to the fringed orifice of the perianth.)
1. B. trichophýllum, Dumort. Flaccid, branched, creeping; leaf-divisions straight, spreading, each composed of a single row of cells; perianth ovate-cylindric. (Jungermannia trichophylla, L.)—On the ground and rotten wood. Minute, light green. (Eu.)
12. CEPHALÒZIA, Dumort. ([Pl. 23.])
Leaves mostly succubous, chiefly 2-lobed, the margins uniformly plane or subincurved; underleaves smaller, often wanting except on fruiting branches. Branches from the under side of the stem. Monœcious or diœcious. Involucral leaves numerous, capitate, 3-ranked, usually 2-lobed; perianth long, triangular-prismatic, the constricted mouth variously dentate. Calyptra small. Capsule somewhat oblong. Elaters free. Spores minute. Antheridia in the base of inflated spicate leaves. (Name from κεφαλή, head, and ὄζος, bud, for the capitate involucre.)
§ 1. CEPHALOZIA proper. Perianth more or less 3-angled or 3-carinate; leaf-cells large (mostly 25–50 µ broad); plants mostly medium-sized.