LICHENES 447 



4. B. ScllWCinitzii, Fr. MS. [Schweinitz 1 } : Crust of crowd- 

 ed scale-like or, at length, coraline-branched greenish-glaucous 

 granules, on a white hypothallus ; apothccia sessile, the opaque 

 disk ai length convex, from pale livid-flcsh-color becoming blackish, 

 the margin rather thick, incurved, pale. 

 Hob. On old trunks. (Frvu-ima, &c.) 



b. B. spatlicr:a, Ach. [Chestnut-brown'] : Crust cartilagineous, 

 membranaceou:-, granulate, glauecseent; apothccia thick, the mar- 

 gin very finely rugulose; disk at length convox, and, excluding the 

 margin, light-chestnut, becoming blackish, within of the same color. 

 Sab. On truuka of trees. 



6. B. FUSSllla, Ach. not of Tuckerm. Syn. [Carnation}: Crust 

 subcartil.'igincous, from rimo. c < % -aroolate at length granulatc-verru- 

 cose, slauccsccnt (often .irrccui.sh); apothecia sessile, glabrous, 

 somewhat tamid, dark-re-!, tho disk finally surpassing the entire 

 thin pal r margin. 

 Hob. On smooth trunks; dead wood, &c. 



T, B. SUfTiiMl, Fr. [Suffused}: Thallus eiTuse, rurnlcse-gran- 

 ulose, iccrustig, glaucous; apothccia dilated, flat, the margin 

 fuscous (rufrsceut wiicn moist), wh : tc-pruinose. 

 Sab. On rough trunks, especially Nyssa mullijlura. 



8. B. CXi^lia, Chaub. [Little} : Crust of minute confluent gran- 

 ules, smooth, oartilajrincous, ciiKrcous-greonish, dcrue=satod bylines 

 of the black hypothallus ; apothccia submarginatc, pale yellowish, 

 becoming fuscou.s. 



Hob. On smooth bark. 



9. B. Cliloropliolis, Tuckerm. MS. [Green-scale} : Crust of 

 small rounded brijrht-givn granules: apothccia very small, some- 

 what immersed, the ual;ed opaque flattish disk finally surpassing 

 the very thin obtu.-:o margin, from white becoming at length dark 

 fuscous, and black. 



Hob. On ston-'.s; old iHmp -wrvllp, mortnr, &c. 



10. B. auranliiical Fr. [Orange-colored}: Cnist cartila- 

 gineous, uncvon, granulate, lutescent, innate in a black hypothallus ; 

 apothccia somewhat Hcv.xtod, with a crcnulate evanescent spurious 

 margin ; disk dark orange, and fuscescent, with a thin proper mar- 

 gin. 



Sab, On trunks, rtcnd wood, and rocka. 



11. B. fcrruginra, Fr. [Rust-colored} : Crust subcartilagin- 

 eous, at first continuous, at length vcrruoosc, whitish, or, when the 

 black hypothallus predominates, becoming ash-colored; apothecia 

 flattish ; disk opaque, from orange becoming blood-red, but always 

 more or less ferruginous, bordered by a paler, somewhat polished, 

 margin. 



Sab. On trunks, and dead branches. 



602. LECIDIM, Ach. 



[Or. Lechis, a small shield, and Eidos, form ; in reference to the apothecia.] 

 Apothecia margined at first by a very black carbonaceous proper 

 exciple, becoming scutellaeform, or hemispherical, solid ; disk at 



