JUNGERMANNIACEiE. ( SCALE-MOSSES.) 711 



11. BLEPHAROSTOMA, Dumort. (PI. 25.) 



Leaves transverse or sli^hlly iucubuus, 3-4-parted, the divisious capillary; 

 uuderleaves smaller, mostly 2-3-parted. Dioecious or monoecious. Fruit ter- 

 minal. Involucral leaves numerous, verticillate, deeply 4-cleft ; perianth ex- 

 serted, pyriform-cylindric, laeiniate. Calyptra short, oblong, bilal i.ite. Cap- 

 sule cylindric-oblong. Elaters large, very obtuse. Spores large, smooth. 

 Antlieridia solitary in the axils of leaf-like bracts. (Name from ^Ki^apov, an 

 eyelid, and crrofia, immtli, in allusion to the fringed orifice of the perianth.) 



1. B. trichophyllum, Dumort. Flaccid, branchetl, creeping; leaf- 

 divisions straight, sjjreading, each comj)Ose(l of a single row of cells; perianth 

 ovate-cyliudric. (Jungcrmannia trichophylla, L.) — On the ground and rot- 

 ten wood. Minute, light green. (Kn.) 



12. CEPHALOZIA, Dumort. (PL 23.) 



Leaves mostly succubous, chiefly 2-lobed, the margins uniformly plane or 

 aubincurved ; uuderleaves smaller, often wanting except on fruiting branches. 

 IJranches from the under side of the stem. Monoecious or dia'cious. Invo- 

 lucral 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 

 tlie base of inflated spicate leaves. (Name from Ke(pa\r), head, and v(os, bud, 

 for the capitate involucre.) 



§ 1. CEPHALOZIA proper. Perlanlh more or less S-angled or 3-carinate ; 

 leaf-cells larr/e {mosilij 25-50 ^ broad) ; plants mostly medium-sized. 



* Uuderleaves rarely present except on fruitimj branches. 



1. C. Virginiana, Spruce. Without runners, usually pale ; leaves small, 

 obliquely round-ovate, acutely 2-lobed nearly to the middle ; cells quadrate- 

 hexagonal, opaque; dioecious, rarely monoecious; involucral leaves round- 

 (juadrate, with slender acuminate lobes; perianth large, widest above the 

 middle, unequally ciliolate ; capsule large, long-exserted ; antheridial spike 

 long. (C. catenulata of authors; not Huebn.) — On rotten wood or swampy 

 ground, N. Eng. to Va., and southward. 



2. C. multiflora, Spruce. (PI. 23.) Often subpinnate, without runners, 

 pale green ; leaves small, round-rhombic, decurrent, bifid ^ their length ; cells 

 quadrate-hexagonal, pellucid; dioecious; inner involucral leaves 3-4 times as 

 long as tlie outer ; perianth linear-fusiform, 3-plaited when young, triangular 

 only above when mature, ciliate or tootlied, flcsliy ; calyptra fleshy, oval-glo- 

 bose ; capsule rather short-pedicelled ; spores cinnamon-color. — On the ground 

 and rotten wood ; common. (Eu.) 



3. C. pleniceps, I'nderw. Stems very short, branching, densely ces- 

 ])it<jse, pale green or whitish ; leaves thick, orbicular, strongly concave, sub- 

 clas])ing but not decurrent, bifid ^ their length, the acute lobes incurved and 

 strcmgly counivent; involucral loaves oldong, palmately 2 -4-cleft, the ventral 

 like the uuderleaves ; perianth large, obloug-cylindric, obtusely angled, the 

 plicate mouth denticulate. (Jungermannia pleniceps, yl;/s^) — Among Sphag- 

 num in the White Mts. {Oakes). 



