The English flora - SeaweedAfrica

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Lecanora.] LICHENES. 187
what lobed deformed, apothecia concave brownish- black the
border rather acute coarctate crenulate. Ach. Syn. p. 147.
Grev. Fl.Edin.-p. 331.
On stones in walls, about Edinburgh, Mr. Maughan (in Fl. Ed'uu).
3. L. extgua, {diminutive black-shielded Lecanora); crust orbicular
radiating thin leprous uneven dull ash-coloured, apothe-
cia minute clustered full-black at length rather convex their
border white at length brownish. Sm.—Lichen exiguus, Ach.
Lecanora periclea, (3. Ach. Syn.
Prodr E. Bot. t. 1849.
p. 151.
On tiles and old pales.
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4. L. periclea, Ach. (rough black-shielded Lecanora); crust
diffuse thin leprous very white, apothecia convex very black
roughish with a white crenated at length powdery border. Ach.
Syn. p. 250, (a.) Lichen pericleus, E. Bot. t. 1850.
On old pales or posts, or the bark of fir, Hurst-pierpoint, Sussex,
Mr. Borrer. Livermere, near Bury, Rev. G. R. Leathes.
5. h.coarctdta, Ach. (contracted Lecanora); crust spreading
thin cracked unequal greyish, apothecia with the disk somewhat
immersed at length elevated flat black the border elevated in-
flexed coarctate irregular pulverulent. Ach. Syn. p. 149.
Lichen coarctatus, E. Bot. t. 534.
On brick walls about Yarmouth, Mr. 1). Turner.
6. L. sqitamulosa, {scaly-crusted Lecanora); crust imbricated
cracked smooth brownish ash-coloured, its fragments angular
and somewhat lobed, apothecia sunk at length elevated flattisb
of a brownish shining-black (with an elevated wavy border).
Sm.—Lichen squamulosus, E. Bot. f. 2011. L, piceus, Dicks.
Cr. Ease. 4. /;. 22. t. 12. /. 5.— Ia