40 Illinois State Laboratory of Natural History. 



beneath, the margin undulate-crisped and more or less tinged 

 with purple, the costa usually densely villous-radiculose and 

 sparingly furnished with narrow and inconspicuous scales; pe- 

 duncles arising from both the apex of the thallus and the inno- 

 vations, 0.8 2. cm. high, usually dark-purple below, sparingly 

 pilose or paleaceous except at the apex or often rather copiously 

 so throughout, the base not involucrate; carpocephalum sub- 

 hemispheric, strongly tuberculate above, barbulate-paleaceous 

 beneath, papillose-crenulate on the margin; inner involucre 

 ovate, tawny; a variable species. 



Hob. On calcareous rocks, Tex. (Wright), Cuba. (Eu.) 

 Bib. Syn. Hep. p. 564 ; Hep. Europ. p. 159. 

 Exsic. Hep. Bor.-Amer. No. 136c. 



2. F. fragrans NEES. Thallus linear-cuneate, thick 

 crenulate, convex beneath, the scales extending to the margin 

 or the uppermost exceeding it, barbed at the ends; inner invo- 

 lucre ovate. ( 'Ma 'rchantia fragrans Schleich.) 



Hob N. Mex. (Fendler). (Eu.) 



Bib. Syn. Hep. p. 558 ; Hep. Europ. p. 158. 



Exsic. Hep. Bor.-Amer. No. 136b. 



ff Inner involucre 10-cleft; plant small and delicate. 



3. F. Bolanderi Aust. Thallus narrowly-linear, 1.3 

 2.1 cm. long, 2 3 mm. wide, with very numerous minute inno- 

 vations especially near the base, solid, rigid, light-green, de- 

 pressed caniculate, indistinctly porous above, carinate-thickened 

 and dark-purple beneath, the margins membranous, whitish 

 and pellucid or often purple, bifid or 2-horned at the apex, 

 somewhat dentate; peduncle slender 2.5 3.8 cm. high, slightly 

 pilose at base, arising from the apex of the innovations; carpo- 

 cephalum small, 4-fruited, subconic when moist, flattish and 

 subcruciate when dry; inner involucre subglobose, white; spores 

 papillose-reticulate with a pellucid margin ; elaters tri-quadri- 

 spiral. 



Hob. On the ground in fields. San Rafael, Cal. (Bolander). 

 Bib. Pro. Phil. Acad. 1869, p. 230. 

 Exsic. Hep. Bor.-Amer No. 136d. 



fff Inner involucre 12-16 cleft; peduncles stout, purple. 



