442 109. Parmelia. 4. CENOTHALAME/E. PI. cell. aph m 
22. Parmelia recurva. Bent-lack border-moss. 
Thallus stellate, pale, slightly greenish, bearing soredia; 
underneath black, fibrilled, spongy; jags in the circum- 
ference many-cut, very narrow, convex, nearly cylindrical; 
a pothecia reddish brown ; border scarcely cut. 
Lichen multifidus, Dickson Crypt. 3, 16. 
Lichen incurvus, Per so on in Usler Ann. 7,24. 
Parmelia recurva, Achar. Meth. 201 ; Lich. 490. 
On stones and hills. 
23. Parmelia sim/osa. Jagged border-moss. 
Thallus stellate, pale grey, smooth; underneath black, 
fibrilled ; jags linear, broader outwardly, sinuately pinna- 
tifid, sinuses broad, circular; apothecia flattish, brown; 
border thin, not cut. 
Lichen sinuosus, Engl. Hot. 2050. 
On walls, rocks, and trunks of trees. 
24. Parmelia diffusa. Spread border-moss. 
Thallus round, contiguous, wrinkled, folded, pale, grey- 
ish, powdery; underneath the same colour, black, fibrilled; 
jags in the circumference separate, flat, rounded, wavey, 
deeply crenate; apothecia flat, brownish black; border at 
length crenulate, powdery. 
Lichen diffusus, Dicks. Crypt. 3, 7. 
Lichen aleurites, Achar. Prod. 117; Engl. Bot. 858. 
Lobaria diffusa, Hoffm. Germ. 156. 
Parmelia aleurites, Achar. Meth. 20S ; Lick. 484. 
On joists, planks, and palings. 
25. Parmelia conspersa. Sprinkled border-moss. 
Thallus round, pale, livid, smooth, dotted with black; 
underneath brownish, fibrilled ; jags sinuated, lobed, 
rounded, crenate, flattish ; apothecia central, chestnut; bor- 
der very slightly cut. 
Lichenoides imbricatum viridans, scutellis badus, Dillen Muse. ISO. 
Lichen centrifugus, Lin. S. P. 1609. 
Licheri'eor'ispersus, Achar. Prod. 118. 
Lobaria centrirngn, Hoffm. Germ. 154. 
Parmelia conspersa, Achar. Meth. 205; Lich. 486. 
On stones and rocks. 
26. Parmelia speciosa. Handsome border-moss. 
Thallus stellate, bald, white, rather greyish; underneath 
milky, softish ; fibrils dark, marginal ; jags tilediike, flat, 
cut, branched, crenate, divisions ascending, powdery; apo- 
thecia central, brownish ; border bent in, swollen, at length 
wrinkled, crenate. 
