[*][*] Plant minute; stems forked or fastigiately divided.
4. F. crístula, Aust. Stems 1–2´´ long; leaves whitish, quadrate or round-obovate, subentire, strongly crisped-undulate; capsule immersed on a short pedicel; elaters short, more or less diverse, with a single narrow annular and spiral fibre; spores pale fuscous, more or less tuberculate.—On moist sand in unfrequented paths, Batsto, N. J. (Austin).
29. PALLAVICÍNIA, S. F. Gray. ([Pl. 22.])
Thallus with a distinct costa. Fruit arising from the costa, at first terminal, becoming dorsal. Diœcious. Involucre cup-shaped, short-lacerate. Perianth long-tubular, denticulate. Calyptra irregularly lacerate. Capsule slender-cylindric. Elaters slender, free. Spores minute. Antheridia dorsal, covered with minute fimbriate scales. (Named for L. Pallavicini, Archbishop of Genoa.)
1. P. Lyéllii, S. F. Gray. Thallus thin, 1–4´ long, 3–5´´ wide, simple or bifid, the margin entire, slightly crenate or serrate; cells large, oblong-hexagonal; perianth erect, fleshy (5 cells thick below), the somewhat constricted mouth lobate-ciliolate; pedicel long, exceeding the thallus; capsule cylindric, five times as long as broad. (Steetzia Lyellii, Lehm.)—Among mosses in swamps and on dripping rocks; common, especially southward. (Eu.)
30. BLÀSIA, Micheli. ([Pl. 23.])
Thallus simple or forked or stellate, with sinuous margins. Diœcious. Fruit from an oval cavity in the costa. Involucre mostly none. Calyptra obovate. Capsule oval-globose. Antheridia immersed in the thallus, covered with dentate scales. Gemmæ globose, issuing by a slender ascending tube from large flask-shaped receptacles which are immersed in the thallus. (Named for Blasius Biagi, a monk of Valombrosa and companion of Micheli.)
1. B. pusílla, L. Thallus ¾–1½´ long, 2–3´´ wide, narrowly obovate, the margins pinnatifid-sinuous.—Wet banks; common. (Eu.)
31. PÉLLIA, Raddi. ([Pl. 23.])
Thallus with a broad indeterminate costa. Monœcious or diœcious. Fructification dorsal near the end of the thallus. Involucre short, cup-shaped, lacerate-dentate. Calyptra membranous, oval, longer or shorter than the involucre. Capsule globose. Elaters long, free. Antheridia globose, immersed in the costa. (Named for A. L. Pelli, an Italian botanist.)