Hepaticw of North America. 93 



base; inner ijivolucre ovate, the njouth plicate-denticulate; in- 

 volucral leaves emarginate-bidentate, erect, equal. (Jumjcr- 

 mania scntata Web., Odontoschisma sen fat a Aust.) 



Hab, — On rotten wood in swamps and damp woods ; common. (Eu.) 



Bib.— Syn. Hep. p. 101 ; Hep. Europ. p. 67. 



Delin.— Brit. Jung. t. 41 ; Ekart t. VIII, f. 64. 



Exsic. — Muse Alleghan. No. 224; Hep. Bor.-Amer. No. 61c. 



XXVI. CEPHALOZIA Dumokt. 



Fructification terminal on clavate l)ranches arising from 

 the lovyrer side of the stem. Inner involucre at first triquetrous, 

 often becoming plicate, the mouth denticulate or ciliate or 

 often laciniate. Involucral leaves numerous, enlarged, usually 

 2-4-cleft, in 3 or more ranks. Capsule ovate or oval, 4-valved 

 to the base, long-pedicelled. Elaters bispiral. Antheridia in 

 the base of inflated leaves which form a spike-like andrcecium. 

 Leaves small, usually roundish and bidentate, with or without 

 amphigastria. Name from Gr. kephale, head, and ozos, a bud, 

 from the form of the fruit-bearing buds. 



* Amphigastria wantimj (sometimes ininute in No. 3). 

 f Leaves (at least the lower ones) distant. 



1. O. bicuspidata Dumort. Minute, dark green; fruit- 

 bearing branch short; stems loose, procumbent; leaves distant 

 or sometimes crowded, half-vertical, ovate-orbicular, usually 

 wider than the stem, bifid to the middle with obtuse sinus and 

 acute segments; involucral leaves in several ranks, 2-5-lobed, 

 the lanceolate divisions repand or subdentate; inner involucre 

 linear, complicate-triangular above, the mouth denticulate; cap- 

 sule oblong, reddish brown. (Jtingermania bicuspidata L., 

 Trigonanthus hicuspidatus Spruce.) 



Var. conferta Austin. Involucral leaves mostly bilobed, 

 somewhat one-toothed outwardly; mouth of the inner invo- 

 lucre subciliate. 



Hab. — On the ground in the high mountains of N. Y., N. Eng., Can. 

 and Cal. {Bolander) (Eu.) The var. on banks, Closter, N. .7. {AKdin). 

 Bib.— Hyn. Hep. p. 188; Hep. Europ. p. 91. 

 Delin.— Brit -Tung t. 11 ; Ekart t. IV f. 33, 

 £.rsic.— Hep. Bor.-Amer. No- 68, 59. 



