470 115. Lecidea. 4. CENOTHALAMEiE. PI.cell.aph. 
31. Lecidea incana. Silver-grey lecidea . 
Crust spreading, leprous floury, soft, uneven light green- 
ish grey; apothecia scattered, sessile, brownish; border 
not cut, paler. 
Byssus pulverulenta incana, farinas instar strata, Dillcn in Raii Sun. 
56, 2. 
Byssus incana, Lin. S. P. 1639. 
Lichen incanus, Achar. Prod. 7 ; Engl. Rot. 1683. 
Pulveraria incana, Ftorkein Berl. Mag. 1807,7. 
Lepraria incana, Achar. Meth. 4 ; Licit. 665. 
On the bark of trees, on mosses and the ground. 
32. Lecidea vernalis . Springtide lecidea. 
Crust very thin, greenish white; apothecia slightly bor- 
dered, afterwards nearly globular, crowded, conglomerated, 
rusty flesh- colour. 
Lichen vernalis, Lin. Syst. Nat. ed. 12, 3, 234 ; Engl. Rot. 845. 
Lecidea vernalis, Achar. Meth. 68; Licit. 198, excl. var. /8. 
On mosses, which it encrusts. 
33. Lecidea sulphur ea. Brimstone lecidea. 
Crust tartarlike, cracked, broken, uneven, smooth, pale 
brimstone-colour; apothecia adnate, flat, scarcely bordered, 
brown and hoary, paler in the circumference, grow irre- 
gular and convex. 
Lichen sulphureus, Achar. Prod. 58; Engl. Rot. 1186. 
Verrucaria sulphurea, Hoffm. Germ. 196. 
Lecidea sulphurea, Wahlenb. Lapp. 477. 
Parmelia sulphurea, Achar. Meth. 159. 
Lecanora sulphurea, Achar. Licit. 399. 
On rocks and stones. 
34. Lecidea orosthea. Mountain lecidea . 
Crust cracked in beds, uneven, rather powdery, brim- 
stone yellow; apothecia small, sessile, slightly convex, not 
bordered, nearly the same colour, grow hemispherical, pale 
brownish, paler towards the bottom. 
Lichen orostheus, Achar. Prod. 38 ; Engl. Rot. 1549. 
Lecidea orosthea, Achar. Meth. 72. 
Lecanora orosthea, Achar. Licit. 400. 
On rocks. 
35. Lecidea decolor ans. Bleached lecidea . 
Crust granular, greyish white, granules falling into pow- 
der; apothecia flattish, vermillion-red, flesh-grey, livid and 
brown, border raised, paler, grows bent. 
