Hepaticce of North America. 85 



XVIII. CALYPOGEIA Raddi. 



Inner involucre wanting. Outer involucre oblong, saccate, 

 truncate, fleshy, hairy, attached by one side of its mouth to 

 the stem, pendent or descending into the earth. Calyptra 

 membranous, partly connate with the involucre. Capsule 

 oblong, twisted, the valves narrow and contorted. Elaters 

 bispiral. Antheridia on short, lateral, capitate branches, one 

 in each perigonial leaf. Leaves entire or 2-toothed. Amphi- 

 gastria 2-cleft. (Kantia B. Gr., Lindberg.) Name from Gr. 

 kaJux, a cup, iijw, under, and yea, earth, from the subterranean 

 involucre. 



1. C. trichoraanis Corda. Foliage delicate, pale-green; 

 leaves roundish-ovate, obtuse, spreading, imbricate; involucre 

 imbedded in the soil; ventral flagella wanting (Jungermania 

 frichoiuanis Dicks., Cutcituudus frichomanis Dumort.) 



Var. rivularis Aust. Foliage blackish or dusky-green; 

 stems longer, more delicate; leaves more scattered, flaccid, 

 loosely reticulate. 



Var. tenuis Aust. Stems climbing among Sphagna, 

 very slender, innovate branching; leaves smaller, usually de- 

 creasing upward, dimidiate-ovate or subfalcate, somewhat de- 

 current. 



Hah. — On ground and rotten logs ; common. (Eu.) The varieties 

 in Southern N. J. {Austin), 



Bib. — Syn. Hep. p. 198 ; Hep. Europ. p. 115 (sub. Cmcinnulus). 



Delin.— Brit Jung. t. 79 ; Ekart, t. IV, f. 35 ; Sulliv. Mosses, U. S- 

 t. VIII. 



j^.mc— Hep. Bor.-Amer. No. 72, 73, 74. 



2. C. Sullivanti Aust. Stems prostrate, furnished 

 with ventral flagella; leaves flat, subcontiguous or imbricate; 

 obliquely rotund-ovate, minutely 2-toothed at apex, the teeth 

 usually straight, the sinus lunulate, obtuse, the inferior margin 

 abruptly and narrowly decurrent; areolation lax, everywhere 

 uniform; amphigastria minute, the uppermost orbicular, bifid, 

 the medial and lower bifurcately 4-lobed, the primary lobes 

 rotund-quadrate, strongly divaricate, the secondary ovate or 

 subulate, usually acute. 



