466 115. Lecidea. 4. CENOTHALAMER. Pl. cell. aph. 
Lichen leprosus ruber, tuberculis nigris, Oeder in Fi. Dan, 470. 
Lichen Oederi, Achar. Prod. 66; Engl. Bot. 1117, 
Lichen czsius ? Dicks. Crypt. 2, 19. 
Lichen Dicksoni, Wither. Bot. Arr. 4, 20. 
Lecidea Oederi, Achar. Meth. 49. 
Lecidea Dicksonii, Achar. Lich. 165. 
On stones. 
14. Lecidea flavicunda. Yellow-stained lecidea. 
Crust very thin, cracked, pale-yellowish ochry, beds flat ; 
apothecia half sunk in ite thallus, flat, scattered, Black! 
slightly hoary, inside black, with a transparent horny stra- 
tum under the centre. 
Lichen cxesius? Dicks. Crypt. 2,19. 
Lecidea flavicunda, -4char. Lich. 166. 
On rocks. 
15. Lecidea alba. White lecidea. 
Crust indeterminate, membranaceous, rather cracked, 
whitish, sprinkled over with a grey or greenish white con- 
glomerated powder; apothecia minute, pressed close, flat, 
black. 
Byssus candidissima calcis instar muscos vestiens, Dillen Musc. 2, 
‘Byssus lactea, Lin. 8S. P. 1639. 
Lichen lacteus, Schreber Spic. 
Lichen albus, Achar, Prod. 7. 
Lepraria alba, 4char. Meth.3; Engl. Bot. 1349. 
Lecidea alba, Whenan Lich. 185. 
On the trunks of trees. 
16. Lecidea citrinella. Citron-yellow lecidea. 
Crust leprous, gianularly powdery, greenish yellow ; 
apothecia sessile, bordered becoming convex, black; inside 
similarly coloured. 
Lichen citrinellus, 4char. Prod. 64. 
Lichen flavo-virescens, Dicks. Crypt. 3,13. 
Lecidea citrinella, 4char. Meth. 47: 
On rotten mosses, and the cracks in walls. 
17. Lecidea scabrosa. Rough lecidea. 
Crust in warty clots, powdery, yellowish grey; apothecia 
convex, rough. | 
Lichen flavo-virescens, Dickson Crypt. 3, 13. 
Lecidea scabrosa, Achar. Meth. A8. 
Lecidea citrinella 6, Achar. Lich. 180. 
On naked gravelly soils. 
