Jh'ptiticfr of NorfJi Amcrirn. 43 



1. A. Wrightii ( Siilliv ). Thallus 1 — 2 cm. long, 8- 4 

 mm. wide^ t'outiuuous from the apex, glaucous above with dark 

 l)ur])l(' scales, the margins crenulate. ascending, convolute; in- 

 volucres usually '{; peduncle scarcely 2 mm. high, paleaceous at 

 the base and apex. ( P/a(/i(>rJnisiiia ]Vrl<)Jtfii Sulliv.) 



Hah. — Tender overhanging' rocks along streams. Tex. ( Wright). 

 />(?//;?.— SuUiv. Mosses U. S. t. VI. 



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

 vate, ().() — 1 cm. wide, pale green, rugulose, fuscous margined, 

 radiculose 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. {Plagio- 

 (•h(fsinn erijtin'ospenna Sulliv. ) 



/fafe.— Rooky Mts. {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, 

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

 the valves. Peduncle very hairy, 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. 

 Gemma3 in crescent-shaped disks on the back of the thallus. 

 Name from Lat. liaiuht, a little moon, alluding to the gemmae- 

 bearing receptacles. 



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

 cately divided, inncn ating from the apex, with a somewhat dif- 

 fused costa. (L. rnh/((riii Mich., MarcJumfia cruciata L.) 



The only species; introduced into greenhouses; always sterile. 

 (Eu.) 



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

 JSrsic— Hep. Bor.-Amer. No. 126. 



