412 92. Isidium. 4. CENOTHALAMEiE. Pl. cell. apli. 
1. Isidium corallinum. Coral isis-lichen. 
Crust tartarlike, afterwards cracked rather chequerlike, 
white, rather greyish; podetia become longish, cylindrical, 
simple or branched ; flake of the apothecia brownish grey. 
Lichen coraliinus, Lin. Mant. 131 ; Engl. Bot. 1541. 
Stereocaulon inadreporiforme, Hoffm. Germ. 129. 
Stereocauion corallinum, Sckracl. Germ. 
Isidiutn corallinum, Achar. Meth. 153; Lichen. 575. 
On rocks and stones. 
2. Isidium Westringii. Westring's isis-Uche$L . 
Crust tartarlike, chequered, cracked, unequal, greyish ; 
podetia nearly globular, afterwards long, cylindrical, simple 
or branched; flake of the apothecia brown. 
Lichen punctatus, Dickson Crypt. Brit. 3, 15. 
Lichen Westringii, Achar. Prodr. 88. 
Isidium Westringii, Achar. Meth. 138; Lich. 577. 
On rocks and stones. 
3. Isidium coccodes . Lady-hird isis-lichen. 
Crust cracked, rather powdery, hoary ; podetia nearly 
globular, nippleshape, very crowded ; flake of the apothecia 
brown, greyish hoary. 
Lichen coccodes, Achar. Prod. 10. 
Lepra obscura, Ehrh. Crypt. 
Isidium coccodes, Achar . Meth. 139 ; Lich. 578. 
On the old bark of trees. 
III. 93. BiEOMYCES. Ehrhart. Mushroom-lichen . 
Thallus crustlike, flat, expanded, adnate; podetia soft, 
solid, fertile;- apothecia headed, not bordered, solid, sessile 
on the top of the podetia; proligerous flake covering the 
entire apothecium, adnate to it, convex, turned back, rather 
thick, coloured ; inside similar. 
1 . Beeomyces roseus . Rose mushroom-lichen . 
Crust uniform, warty, hoary; podetia very short; apothecia 
nearly globular, pale flesh-colour. 
Lichenoides fungiforme, crusta leprosa Candida capitulis et pediculis 
incarnatis, Dilten in Raii Syn. 70,40. 
Lichen ericetorum, Lin. S. P. 1608 ; Engl. Bot. 572. 
Bseomyces roseus, Achar. Lich. Univ. 512. 
On dry clays. 
