6. L. Hàllii, Aust. Creeping, very slightly rooting; leaves subvertical, oblong, cleft nearly to the middle with obtuse sinus and erect mostly obtuse lobes; lower underleaves small, subequally 2-parted with an obtuse sinus, the upper ones larger, with a single tooth on each side or palmately 3–4-parted, the apical sublanceolate and narrowly bifid.—On the ground, Ill. (Hall).
19. CHILOSCỲPHUS, Corda. ([Pl. 23.])
Leaves succubous, dorsally decurrent, mostly rounded and entire; underleaves rooting at the base, usually deeply 2-cleft. Fruit terminal on a very short lateral branch. Involucral leaves 2–6, the outer smaller, the inner variously cut; perianth small, obconic or campanulate, 3-angled and 3-lobed only at the apex, the lobes usually spinose. Calyptra fleshy, subglobose or clavate. Capsule oblong-globose. Antheridia in the saccate bases of stem-leaves. (Name from χεῖλος, a lip, and σκύφος, a bowl, from the form of the perianth.)
[*] Underleaves 4-parted.
1. C. ascéndens, Hook. & Wils. ([Pl. 23.]) Prostrate; leaves large, pale green, ascending, roundish-oblong, slightly emarginate; involucral leaves two, 2-cleft; perianth 2–3-lobed, the lobes long and irregularly lacerate-toothed.—On rotten logs; rather common.
[*][*] Underleaves bifid.
2. C. palléscens, Dumort. Procumbent, creeping; leaves flattened, ovate-subquadrate, obtuse or retuse; underleaves ovate, distant, free; involucral leaves two, 2-toothed; perianth deeply trifid, the lobes spinose-dentate, mostly shorter than the conspicuous calyptra.—Mountains of N. Eng. (Oakes).
3. C. polyánthos, Corda. Procumbent, creeping; leaves subascending, ovate-subquadrate, truncate or subretuse; underleaves ovate-oblong, distant, free; involucral leaves 2, slightly 2-toothed; perianth 3-lobed, the short lobes nearly entire, shorter than the calyptra.—Var. rivulàris, Nees. Larger, more branching, succulent; leaves mostly rounded above; underleaves often divided in halves or wanting.—On the ground among mosses or on rotten logs, common; the variety in shaded rills or still ponds. (Eu.)
20. PLAGIOCHÌLA, Dumort. ([Pl. 24.])
Leaves large, succubous, rounded or truncate above, dentate or spinose or rarely entire, the dorsal margin reflexed; underleaves usually none. Diœcious or monœcious. Fruit terminal, or axillary by the growth of offshoots. Involucral leaves larger than the cauline; perianth laterally compressed, erect or decurved, obliquely truncate and bilabiate, the lobes entire or ciliate-dentate. Capsule thick, oval. Elaters attached to the middle of the valves. Antheridia oval, 2–3 in the axils of spicate leaves. (Name from πλάγιος, oblique, and χεῖλος, lip, from the form of the perianth.)