The English flora - SeaweedAfrica

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180 LICHENES. [Lecidea.
Ach. Syn. p. 30.
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t. 1682.
On the bark of different species of Fir.
Lichen abietinus, Ach. Prodr.—E. Bot.
34. L. speirea, Acb. (veiled black-shielded Lecidea); crust
tartareous uninterrupted slightly tessellated very white, apothecia
sessile flat covered with a grey hloom at length elevated
convex very black with a white (paler) border. Sm.—Ach. Syn.
p. 31. Lichen speireus, E. Bot. t. 1864. L. rimosus, E. Bot.
t. 1736, (according to Acharius).
On flinty pebbles on the summits of the cliffs, near Newhaven, Sussex,
Mr. Borrer.
35. L. albo-dtra, Borr. Mss. (black and white Lecidea); crust
spreading cracked somewhat mealy white, apothecia sunk even
with the crust small crowded black clothed with a grey bloom.
u. corticola. Verrucaria albo-atra, Hoffm. PI. Lich. v. 1. p. 76.
t. 15. / 2. Lecidea corticola, Ach. Syn. p. 32. Lichen corticola,
E. Bot. t. 1892.— /S. saxicola. Lecidea epipolia, Ach. Syn.
p. 32. Lichen epip., E. Bot. t. 1137 L. candidus, E. Bot.
t. 1138. (not Lecidea Candida, Ach.)
«.. Old trees, frequent. /3. On stone buildings, Norfolk and Suffolk.
—At Mr. Borrer' s suggestion, I have referred the Lichen candidus of
E. Bot. to this (as an old state of it), united the Lecidea epipolia with
the L. corticola, and restored the old name of Hoffmann. The true
L. Candida of Ach. (Lichen tumidulus, Sin.) does not appear to be
British.
36. L. Lightfootii, Ach. (Lightfootian Lecidea); crust tartareous
granulated greenish-white black-edged, apothecia sunk
flat at length convex polished black with a black smooth border.
Sm.—Ach. Syn. p. 34 Lichen Lightfootii) E. Bot. t. 1451.
Bark of trees; not very unfreqnent.
37. L. incompta, Borr. (loose mealy-crusted Lecidea); crust
indeterminate coarsely mealy uneven olive-green, apothecia
superficial small purplish-black the disk at length convex the
border narrow flexuose. Borr. in E. Bot. Suppl. t. 2699.
In large patches, on the shaded parts of rugged trunks of old Elms,
at Shermanbury and Hurst-pierpoint, Sussex, Mr. Borrer.— "The
apothecia of this bear much resemblance to those of L. ceruginosa
and L. Lightfootii; but the thallus is essentially different in structure,
being formed, from the first, of coarse loose particles, not of granules,
scattered on a filmy substance." Borr.
38. L. quernea, Ach. (Oak Lecidea); crust leprous pale
brownish-yellow, apothecia slightly immersed in the crust convex
dark-brown nearly black when dry, the border obsolete.
Ach. Syn. p. 36.
Lichen querneus, Dicks. Cr. Ease. 1. p. 9.
t 2. /. 3. E. Bot t. 485.
In the clefts of the bark of Oak-trees, in exposed situations.
39. L. viridescens, Ach. (greenish horny-tubercled Lecidea);
crust thin mealy indeterminate scattered pale-green, apothecia
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