The English flora - SeaweedAfrica

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] 83 LICHENES. [Lecanora.
the edges plicate, apothecia small terminating the granulations
the border entire at length depressed the disk dark brown.
Borr.—Ach. Syn. p. 155. Borr. in E. Bot. Suppl. t. 2262.
/. 2. Lichen aipospilus, Wahl. Lapp. p. 409. t. 27. /. 2.
Rocks at Bamburgh, and Staples' islands, on the coast of Northumberland,
Mr. IV. Robertson. Maritime rocks, Orkney ? Mr. Borrcr.—
"An extremely remarkable Lichen, a link, apparently, between the
genera Lecanora and Isidium, approaching very closely to the latter in
the structure of the thalhis." Borr.
9. L. spodophda, Ach. (close branchy-clustered Lecanora);
crust tartareous areolate formed of concrete branch-like granu-
lations grey greenish when wet, apothecia small terminating
the granulations, the border slightly crenulate at length depressed
the disk (dark) reddish-brown. Borr.—Ach. Syn.
p. 155. Borr. in E. Bot. Suppl. t. 2662. / 3.—Lichen spodophceus,
Wahl. Lapp. p. 409.
Growing with L. aipospila on the coast of Northumberland, Mr. W.
Robertson.—This species bears some general resemblance to L. sophodes ;
but its real structure, although more minute in all its parts, is most
similar to that of L. aipospila.
10. L. sophodes, Ach. (obscure black-shielded Lecanora) ; crust
orbicular granulated dull greenish ash-colour, apothecia slightly
convex clustered black brown when moist with an elevated
entire border. Ach. Syn. p. 153. Lichen sophodes, Ach. Prodr.
—E. Bot. t. 1791.
Common on trees, in Sussex, Mr. Borrer. About Yarmouth, Mr.
D. Turner.
11. L. tuberculosa, Ach. (warted fibrous-edged Lecanora);
crust greenish-grey formed of globular granulations with a
radiated marginal
black with a thick
fringe, apothecia sessile
elevated smooth border.
flattish glaucous-
Sm.—-Ach. Syn.
p. 164. Lichen tuberculosus, E. Bot. Suppl. t. 1733.
Common on flint-stones, on the Sussex Downs, Mr. Borrer.
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12. L. aspersa, Borr. (powdered warty Lecanora); substratum
of the crust filmy black, warts scattered tartareous slightly
convex olive-green with pale green soredia, apothecia small
elevated the margin thick inflexed the disk black. Borr. in
E. Bot. Suppl. t. 2728.
On flints, near Bury St. Edmunds, Rev. G. R. Leathes. Abundant
near Portslade, Sussex, Mr. Borrer.—Fruit rare. " This Lichen has
been mistaken for L. tuberculosa, E. Bot. t. 1733; but the warts of the
thallus of that species are very prominent, even, and not powdery, and
the substratum is of the same colour, not black : the apothecia also are
more conspicuous and of a glaucous hue. In the black substratum, and
in the dispersion of the warts, L. aspersa resembles Lecidea atro-alba,
E. Bot. t. 2336, and L. verruculosa, t. 2317; but, besides the generic
characters, it differs from both in the colour of the warts, and in the
powdery soredia. The apothecia are most like those of some imperfect
states of L. atra, t. 949, but the structure of the thallus is very dissimilar."
Borr.