Bl..cell, aph. 4, CENOTHALAME. 112. Rinod. 449 
a. Apothecia naked, black. 
1. Rinodina atra. Black rinodine. 
Crust indeterminately formed, cracked, eranular, warty, 
greyish white; apothecia flat in the centre, afterwards 
slightly swollen, black; thalloid border raised, free, at length 
bent and crenulated. 
_ Lichenoides-crustaceum et leprosum, scutellis nigricantibus majoribus 
et minoribus, Dillen Musc. 133. 
Lichen tephromelas, Ehrh, Crypt. 
Lichen ater, Hudson Fl. Angl. 530; Engl. Bot. 949. 
Parmelia atra, Achar. Meth. 154. 
Lecanora atra, Achar. Lich. 344. 
On stones, rocks, and the bark of trees. 
Thallus. sometimes whiter, sometimes greyer; apothecia 
either very crowded, flat and then convex with the border 
not cut; or varying in size, with the border crenate and 
bent. 
2. Rinodina oculata. : Eyed rinodine. 
Crust bald, nippled, branchbearing, black; apothecta 
sessile, scattered, some slightly podicelled; centre rather — 
concave, black, their proper edge at length bent; ¢halloid 
Lorder swollen. 
Lichen dactylinus, Wahl. Lapp. 414. 
Lichen oculatus, Dicks, Crypt. Brit. 2, 17. 
Isidium oculatum, Achar, Meth. 140; Lich. 576. 
Forming 4 crust on alpine mosses. 
3. Rinodina coarctata. Contracted rinodine. 
Crust diffuse, thin, cracked, slightly wrinkled, unequal, 
greyish; apothecia black, centre sunk, then raised, flat; 
thalloid border raised, bent in, irregular, contracted, pow- 
dery. 
Lichen coarctatus, Engl. Bot, 534. 
Parmelia coarctata, Achar. Meth, Lich. 158. 
Parmelia elacista, Achar. Meth. Lich. 159. 
Lecanora coarctata, Achar. Lich. Univ, 352. 
On stones and brick walls. 
4 
4. Rinodina periclea. Shielded rinodine. 
Crust thin, nearly leprous and dispersed, whitish; apo- 
thecia plano-convex in the centre, black, transparent, rough; 
thallod border at the base, very small, powdery, becoming 
imperceptible. te 
VOL. Le ZG 
