The English flora - SeaweedAfrica

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Calicium.] LICHENES. 141
tula plano-convex with a slightly convex disk. Turn, and
Borr. I. c.
Very common on decaying wood in shady places.— 0. on Poplars, at
Killarney, Ireland, Sir T, Gage— Distinguishable from the preceding, to
which, of all the British species, it is most nearly allied, by its stouter
and straight stipes and wholly black colour.
12. C. debile, Turn, and Borr. (slender Calicium); crust
filmy very thin white, pilidia stipitate, stipes slender flexuose,
capitulum plano-convex black with a recurved margin, sporules
black forming a slightly convex compact disk. Turn, and Borr.
Licit. Br. p. 151.— Lichen delnlis, E. Bot. t. 246:2.—DHL
Muse. p. 78. t. 14. /. 3. A. ?
On old timber, frequent under the eaves of thatched buildings.
When viewed under a glass, Messrs. Turner and Borrer observe that the
perfect pilidium has precisely the appearance of a small black Agaricus,
the capitulum being convex above and recurved and rounded at the
edges* The stipes is incrassated at the base.
13. C. sphterocephalum, Ach. (round-headed Calicium); crust
filmy very thin greyish sprinkled irregularly with yellowishgrey
powder, pilidia stipitate, capitulum subglobose rustybrown
with a narrow somewhat inflexed border, sporules black.
Ach. Sijn. p. 57. Turn, and Borr. Lich. Br. p. 153. Schcer.
Lich. Heir. p. 4. n. 8.— C. salicinum, Pers. in f'si. Ann. v. 7.
p. 20. t. 3./ 3. Lichen spharocephalus, Web,—E. Bot. t. 414.
—Dill. Muse. t. 14. /. 3. (3. crustosum; covered with a pale
greenish-yellow powder, forming an almost continuous crust.
On old wood, on the bark and in the hollow trunks of trees, in Norfolk,
Suffolk, Sussex, and the North of England.—" Allied to C curium,
and C. ilcbilc, but seeming to differ essentially from the former, by its
Longer stipes, and from both, by the colour of its pilidia and the powder}
appearance of the thaliutJ'
14. C. arugindsum, Turn, and Borr. ( Verdigris Calicium);
crusl a very thin whitish film every where covered with pow-
dery granulations of verdigris grey, pilidia stipitate, capitulum
subglobose pruinose with ;l thin erect border, sporules blackishbrown
pruinose. Turn, and Borr. L,ch. B>>. />. 156. /-'• Bot
t. l'o(>2.— Q. carulescens ; crust small, tumid patches of bluishgrey
granulations, dispersed on a white film. Turn, and
Borr, I. e.
Old palea near 1**11 r \ , Suffolk, Rev. G. Ii. Lcnihrs.—:-. on the boards
ofa hovel near < uckfield, Sussex.— Among the British Calicia,the present
most approaches C. hyperellum and C, tphatrocephalum B.J but the
different and much duller colour of the thaltu* suffices, to distinguish
first sight. The second var. t it is observed in the Lich. Brit, resembles
C, davelltm rather i loselj in the granulations of the thallus, nod somewhat
in the colour of the pilidia; but the latter are much more slender
than in that BD4 Cl( V and the |f»< > ul< s are not b'.ai k.
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it at
15. ('. peroiuUlum, Ach. Meih. (cinnamon-headed Calicium);
crasl \er\ thin film irregularly sprinkled with powder white,
pilidia stipitate white, capitulum plano-convex, spornles flesB