446 THALLOPHYTES 



Far. &.JHiformis, Fr. podetia very slender; scyphi narrow, entire, or obliterated 

 by a symphycarpeous apothecium. 

 Sab. On decaying logs, rocks, &c. 



Obs. I have not observed the other var. Sometimes the podetia 

 become exasperate with green thalline scales. Au ochrocarpous 

 state, of some of the Lichens of this Series, often occurs, with 

 pale ycUoiviish apothecia. 



GOO. BAEOMY^ES, Fr. 



[Gr. Baios* small, and Myke&, :i fungu.--; ihc plant resembling a minute fungus.] 

 Apothecia globose from the first, immar v crinate, velate, finally empty 

 and araucous within, the base closely surrounding a stipe. Thallus 

 crustacoous, uniform, protruding fertile stipes which are destitute 

 of a cortical stratum. 



1. B. r v *SCHS, Pers. [Rose-colored^ : Crustverruco.se, glaucous; 

 stipes short, cylindrical ; apotheciu subglobose, flesh-colored. 

 Hub. Sterile clay soils; road sides, ic. : common. 



601. BIATO X RA. Fr. 



[ ] 



Apothecia at first margined by a waxy thalline exciple converted 

 into a proper one, becoming hemispherical or globose, sub-immar- 

 ginate, ^olid, and ccphaloid; disk placed on a- .substratum often 

 paler, never coal-black, at length dilated, turgid, concealing the 

 paler margin. Thallus horizontal, arising from a hypothallus, 

 crustacoous. cffigurate, or uniiorm. Podetia vv anting, but the apo- 

 thecia sometimes stipitate. 



SECTION 1. 

 Thallus squamose, or lobed at tlie circuinforence. 



4J^=" Apothecia sessile. 



1. B. Micltcntri, Tuckerm. MS. \_Miehener' s]: Thallus orbi- 

 cular, submonophyllous, livid lead-colored, tips of the lobes rounded 

 and crenate ; hypoth.illu.-i tomentose, dark-green; apothecia naked, 

 sub-immarginato, rufoui, becoming convex and black. 

 Hob. On trunks: exceedingly rare. 



J. B. rufi)-!! ij?ra, Tuckerm. [Reddish-black^ : Thallus squa- 

 mose, imbricate, from pale rufous becoming blackish ; scales irreg- 

 ularly suborbiculate, a.sccnding, crenate -lobcd ; apothecia adnate, 

 plane, obtusely margined, atro-rufous, at length convex, black. 

 Hob. On rocks. 



SECTION 2. 



ThaUus effuse, uniform. 



3. B. sangllineo-fttra, Fr. [Sanguineous-black] : Crust thin, 



membranaceous, effuse, whitish-cinereous, becoming granulose ; 



apothecia sanguineous, with an obscure paler margin, at length 



black. 



Hob. On rocks, and trunks, growing oyer mosses. 



