Hepaticce of North America. 43 



1. A. Wrightii ( Sulliv). Thallus 1—2 cm. long, 3—4 

 mm. wide, continuous from the apex, glaucous above with dark 

 purple scales, the margins crenulate. ascending, convolute; in- 

 volucres usually 3: peduncle scarcely 2 mm. high, paleaceous at 

 the base and apex. { P}a(/ior]ias)iia Wrightii Sulliv.) 



Hah. — Vnder overhanging rocks along streams. Tex. ( Wright). 

 De//».— Sulliv. Mosses U. S. t. VI. 



2. A. erythrosperma (Sulliv. ) Thallus expanded, obo- 

 vate, 0.(3 — 1 cm. wide, pale green, rvigulose, fuscous margined, 

 radiculo.se and squamous beneath: scales whitish, setaceous- 

 incised, extending beyond the margin toward the apex; pedun- 

 cle 1 — 1.7 cm. high, naked at the base, paleaceous at the apex: 

 spores orange-red. tuberculate: elaters quadrispiral. (Phit/lo- 

 chasnia erythrosperma Sulliv.) 



7/a6.— Rocky ^Its. [E. Hall). 



XII. LUNULARIA Mich. 



Carpocephalum cruciately divided into 1-6 (usually 4) hori- 

 zontal segments or involucres, which are tubular, vertically 

 bilabiate and 1-fruited. Inner involucre wanting. Calyptra 

 included, persistent, rupturing at the apex. Capsule exserted 

 on a long pedicel. 4-8-valved, the valves spreading, subtortuous. 

 Spores minute, nearly smooth. Elaters short, very slender, 

 liispiral, deciduous or a few remaining attached to the apex of 

 the valves. Peduncle very hair}^ 2.5 — 3.8 cm. high, involu- 

 crate with numerous membranous scales at the base. Andrce- 

 cium oblong, sessile in the sinus at the apex of the thallus. 

 Thallus oblong, with rounded lobes, distinctly areolate and 

 porose, squamigerous. Scales imbricate, sublunulate, their 

 apex abruptly contracted into a roundish cochleariform lobe. 

 Gemnicie in crescent-shaped disks on the back of the thallus. 

 Name from Lat. lunida, a little moon, alluding to the gemuue- 

 bearing receptacles. 



1. L. cruciata Dumort. Thallus 2.5 — 5 cm. long, fur- 

 cately divided, innovating from the apex, with a somewhat dif- 

 fused costa. (L. vulgaris Mich., Marchautia cruciata L. ) 



The onlv species; introduced into greenhouses; always sterile. 

 (Eu.) 



Bib. — Syn. Hep. p. 511 ; Hep. Europ. p- 147. 

 Exdc. — Hep. Bor.-Amer. No. 126. 



