30 lUinois State Ldhonttort/ of XatiiraJ Historij. 



fuscous-black, strongly muricate. (Riccia Cnrtlsli, in Herb. 

 James, Cryptocarpiis CurtiHii Aust. ) 



jHafe.— Moist ground, N. C, (Curtis), S. C. (Ravenel). 



Bib.— Tro. Phil. Acad. 1869, p. 231, Torrey Bull. VI, p. 21, 305. 



III. SPH^ROOARPUS Mich. 



Fruit aggregated in the thallus. Involucre sessile, obtusely 

 conic or pyriform, perforated at the apex, continuous at the 

 thallus, 1-fruited. Calyptra crowned with a deciduous style, 

 closely investing the globose capsule. Capsule indehiscent. 

 Spores globose, muriculate, remaining united in a coccus. An- 

 theridia in folliculose bodies on the surface of separate thalli. 

 Thallus ecostate, epidermis not distinct. Name from Gr. 

 Hphdiros^ a sphere, and hupos, fruit. 



1. S. Micheli Bell. Thallus orbicular, 0.0 — 1.3 cm. in 

 diameter, lobed, the lobes entirely concealed by the aggregated, 

 inflated involucres; involucres about 1.5 mm. long, three to 

 foar times the length of the capsule, obtuse or subtruncate; 

 coccus 0.102 — 0.127 mm. in diameter, indistinctly lobed. (S. 

 tcrrcstris Mich., Tarf/lojiia sphiVfijcarpa Dicks.) 



Var. Californicus Aust. Thallus substipitate, deeply 

 lobed: lobes often leaf -like; involucre oblong or subcylindric, 

 slightly acuminate. (S. CaJiforHini^t, Aust., S. Berterii^ Aust. 

 not of Mont. ) 



iZrtfe.— Cultivated fields, S. C. (Eu.) The variety in Cal. 



Bib.— Syn. Hep. p. 595, Hep. Europ. p. 164. 



Belin. — Lindenberg Monog. Ric. t. XXXVI. 



^.rsic— Hep. Bor.-Amer. No. 138. 



2. S. Texanus Aust. Thallus smaller, its lobes very 

 slightly acuminate; involucre less obtuse at apex; spores about 

 one-half as large as in S. Micheli, coccus 0.063 mm. in diameter. 



^a&.— Texas ( Wnght, 1849.) 

 Bib.— Torrey Bull. VI, p. 158. 



3. S. Donnellii Aust. Male thallus narrow, amber brown, 

 with stipe-like base; lobes spike-like; female thallus with sub- 

 stipitate base and leaf -like lobes; coccus deeply lobed 0.145 — 

 0.170 mm. in diameter; spores strongly tuberculate. 0.078 — 

 0.101 mm. in diameter. 



flafe.— Gardens, etc. Fla (J. Donnell Smith). 

 Bib.— Torrey Bull. VI, p. 157. 



