54 JlJIiiois Sfdfc Lahoraforu of Xdfiiral History. 



I. ANEURA DuMORT. 



Dioecious. Sporogonium arising from the under side of 

 the thallus near the margin. Outer invohicre cup-shaped, very 

 short and hicerate or wanting. Inner involucre v^^anting. 

 Calyptra ascending, nearly cylindric, fleshy. Capsule oval or 

 oblong, 4-valved. Elaters unispiral, adherent to the apex of 

 the valves. Antheridia immersed in the upper surface of re- 

 ceptacles proceeding from the margin of the thallus. Thallus 

 fleshy, destitute of a midrib. (Riccardia B. Gr., Lindberg.) 



* Calyptra tubercuhife. 



1. A. multiflda Dumort. Thallus brownish-green^ 

 ■prostrate, pinnately divided, the primary portion biconvex, 

 somewhat rigid; branches horizontal, the secondary pectinately 

 pinnate with narrow linear divisions; fructification from the 

 primary portion or from lateral branches; involucre top-shaped, 

 fleshy. (JHugcriiuntia muUifida L.) 



Vai-. major Nees. Primary portion and branches thick, 

 the branches interruptedly bipinnate: all the divisions short, 

 obtuse. {Jungermania hiphinata Schwein.) 



Hah — On decaying wood and moss in swamps. N. J. {Austin), 

 Allegiiany Mts- (Eu.) Tiie var. growing over mosses on rocks. 



Bib.— Syn. Hep. p. 496, 788; Hep. Europ. p. 141; Scliweinitz Spec. 

 Flo. Amer. Sept. p. 20. 



Delin.—Brit Jung t. 45 ff 3 et 6; Ekart t. VII f. 50. 



Exsic—Hep. Bor.-Amer. No 116, 116 b. 



2. A. palmata Nees. Thallus palmately divided, the 

 primary portion depressed-plane, procumbent; branches ascend- 

 ing, 4 — G mm. high, pinnatifid-palmate, the divisions linear, 

 obtuse or truncate; fructification lateral; involucre lacerate. 

 {.Ttnigermariia palmata Hedw.) 



Hah. — Rotten logs, etc. Eastern IT. S. (Eu.) 

 Bih.—^yn. Hep. p. 498, 788 ; Hep. Europ. p. 143. 

 i)eKn.— Ekart t. XIII f. 115. 

 E.vHk. — Hep. Bor.-Amer. No. 114. 



'** Calyptra merely papillose at apex. 



