The English flora - SeaweedAfrica

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206 LICHENES. [Sticta.
and given to me by M. de Humboldt.—The broken thallus of this and
the preceding species, exhibits a yellow powder within.
4. S. puhnondria, (Lungwort Sticta); thallus wide-spreading
olive-green pale brown when dry pitted and reticulated smooth
or bearing powdery whitish warts on the reticulations and frequently
elongated scattered or tufted granules deeply laciniated
and broadly lobed and sinuated beneath clothed with brownish
downy fibres the swellings bare, apothecia mostly marginal
red-brown with a thick border. S. pulmonacea, Ach.
p. 233. Lichen pulmonarius, Linn.—E. Bot. t. 572.
Syn.
On the trunks of trees, in mountainous countries, frequently investing
them for a considerable extent with its large shaggy -looking fronds.
5 S. scrobiciddta, Ach. (jntted Sticta); thallus wide-spreading
greyish-green and glaucous above pitted and bearing grey
mealy warts especially near the margin the segments rounded
and lobed irregular beneath downy tawny with bare prominent
white spots, apothecia scattered small red-brown with a thick
border. Ach. Syn. p. 234. Lichen scrobiculatus, Scojj.—
L. verrucosus^ Huds.—Jacq. Coll. v. 4. t. 18.
E. Bot. t. 497.
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f.
2.—Bill. Muse. t. 29. /. 114.
Trunks of trees in mountainous countries, and upon rocks among
mosses, in exposed situations.
6. S. limhdta, Ach. (mealy -bordered Sticta); thallus orbicular
glaucous-brown with broad and rounded lobes and with grey and
powdery warts which are very copious at the margin, beneath near-
ly of the same colour with downy fibres and naked pale cyphellse,
apothecia brown almost imbedded in the thallus with a slightly
elevated border. Ach. Syn. p. 236. Lichen limbatus, E. Bot.
t. 1104.—Bill. Muse. t. 26. f. 100. B,C.
Bagley wood, Oxfordshire, Dill.—N. of England, Wales and Scot-
land, upon rocks.—The apothecia I have never seen, they are figured in
E. Bot. from Mr. Turner's Snowdon specimens.—This species seems
but little known upon the continent and is certainly very nearly allied
to the following.
7. S.fuliginosa, Ach. (sooty Sticta); thallus orbicular dark
lurid-grey rough with blackish granulations broadly lobed at
the margin, beneath greyish-brown downy and fibrous with bare
pale sunken spots or cyphellae, apothecia scattered red-brown
flat with a thick fringed border, at length convex Avith the
border obliterated. Ach. Syn. p. 236 Lichen fuliginosus,
Bicks.—E. Bot. 1. 1103.—Bill. Muse. t. 26. f. 100. A.
On rocks and trees in subalpine countries, frequent.— Its fructification
is very rare. I am indebted for excellent specimens in that state to my
valued friend Dr. Richardson, who gathered them on trees near Dumfries.
" The shields" he observes, " are not marginal ; when young,
they are covered with a thin membranaceous border, which is lacerated
or rather regularly toothed (bearing a striking resemblance to the peridium
of Phacidium coronaium). In an older state, the dish is swollen
and the border nearly obliterated." Richardson in litt.— This and the