Hcjxiticd' of XorfJi Aincrica. 55 



3. A. sessilis S|)reng. Thallus decumbent, irregularly 

 lobeil, 2.5 — 5 cm. long, 0.6 — 1 cm. wide; involucre wanting; 

 pedicel 2 — 2.5 cm. long, sometimes folded u])on itself and re- 

 maining within the calyptra, thus making the capsule appear 

 sessile; sterile receptacles elongate. 



Hah. — AVooded swamps. Eastern U. S. 



Bib— ^yn. Hep. p. 495, 788 ; Mem. Amer. Acad. n. ser. Ill, p. 62. 

 Diiin.—^lem. Amer, Acad, n, ser. Ill, t. V ; Sulliv. Mosses, U. S. 

 t. VII. 



Exsic. — Hep. Bor.-Amer. No. 113. 



*** Cxh/pfrfi siiioof/i/'slt. 



4. A. pinguis Dumort. Thallus decumbent or ascend- 

 ing, subsimple, somewhat linear; involucre short, lacerate; 

 calyptra cyliudric; sterile receptacles 2-lobed, the lobes obtuse. 

 (Jiingermania pinguid L. ) 



Hah.—^Yei banks, So. States, O., Penn., N. J. (Eu.) 

 Bih.—>>yn. Hep. p. 4!>3-4 ; Hep. Europ. p. 143. 

 Delin.—Brii. Jung. t. 4(j ; Ekart t. VII, f. 51. 

 ^.mc— Hep. Bor.-Amer. Xo. 112, 112 b. 



5. A. pinnatifida Nees. Thallus pinnately divided or 

 subsimple, flat or subcanaliculate; branches horizontal, the 

 broader pinnatifid or dentate, obtuse. 



Hah.— On dripping rocks, Hokokus, X.J. {Amtin), near Xew Haven, 

 Conn. {Eaton). (Eu.) 



jBi6.— Syn. Hep. p. 495, 788 ; Hep. Europ. p. 142. 

 DeM)!.— Ekart t. XIII f. 109. 

 Exsic. — Hep. Bor.-Amer. Xo. 115. 



II. PELLIA Raddt. 



Monoecious. Involucre arising from the upper side of the 

 thallus near the apex, cup-shaped, short, the margin lacerate- 

 dentate. Inner involucre wanting. Calyptra oval, membra- 

 nous, longer or shorter than the involucre. Capsule globose. 

 Elaters long, free, bispiral. Antheridia globose, immersed in 

 the broad indeterminate costa of the thallus. Named for S'kj. 

 A. L. Pelli. an Italian botanist. 



