Plecellvaph. 4. CENOTHALAMEZE. 112.Rinod. 453 
16. Rinodina glaucoma. _Wall-eyed rinodine. 
Crust tartarlike, cracked in beds, even, greyish white ; 
apothecia sunk in the crust; centre flat, afterwards convex 
nearly globular, sea-green, hoary, at length becomes naked 
and black; thalloid border not in the least cut, and when 
, old disappears. 
Lichen rupicola, Lin. Mant. 132. 
Lichen compositus, Wither. Bot. Arr. 4, 14. 
Lichen glaucoma, Engl. Bot. 2156. 
Lichen.varians, Davies in Lin, Trans. 2, 18. 
Lichen albido cesius, Schrad. Germ. 87. 
Lichen sordidus, Persoon in Uster Ann, 7, 26. 
Urceolaria tessulata composita, Achar, Meth, 143. 
Parmelia glaucoma, Achar. Meth. 161, except var, f. 
Lecanora glaucoma, Achar. Lich. 552, except var. f. 
On whinstone and other rocks. 
17. Rinodina lutescens. — Yellowish rinodine. 
Crust spreading, thin, membranaceous, warty, pale, 
sprinkled over with a pale yellowish green powder; apo- 
thecia scattered; centre plano-convex, slightly bordered, 
hoary, upon a flesh-colour, reddish yellow or grey ground $ 
thalloid border bent. 
Verrucaria lutescens, Hoffm. Germ. 195. 
Parmelia lutescens, Florke, Berl. Mag. 1807. 
Lecanora elatina, Achar. Lich. 387. 
Lecanora lutescens, Achar. Lich. 367. 
On the bark of fir and other trees. 
18. Rinodina albella. Whiting rinedine. 
Crust thin, cartilaginous, smooth, milky white; apothecia 
scattered ; centre slichtly concave, pale flesh-colour, after- 
wards convex, grey, hoary; thalloid lorder swollen, not in 
the Jeast cut. 
Lichen albellus, Persoon in Ust. Ann. 11,183; Engl, Bot. 2154. 
Verrucaria umbilicata, Hoffm. Germ, 171. - 
Parmelia albella, Achar. Meth. 163. 
Lecanora albella, Achar. Lich. 369. 
On the smooth bark of young trees. 
e. Apothecia with the centre slightly flesh-colour, pale, 
pearly, yellowish, wax-colour or inclining to orange. 
19. Rinodina parella. Archel rinodine. 
Crust cracked, plaited, warty, very white; apothecia 
thick, crowded, mis-shapen by squeezing; centre slightly 
concave; thalloid border turgid, not cut, nearly the same 
colour as the centre. 
