The English flora - SeaweedAfrica

Umbilicaria.} LICHENES. 219
granulated on both sides glaucous-grey above, blackish-brown
beneath, tubercles scattered somewhat bordered much convoluted
Ach. Metk p. 110. E. Bot. t. 2*86.-Zichen murinus,
Ach. Prodr. p. 143,—L. griseus, Ach. in Act. Holm.— Umbili-
caria depressa, (3. A. Schcer. Lich. Helv. Spicil p S*>
" Communicated by Mr. D. Turner to Sir J. E. Smith, but the specimens
are exotic \\ e know not its precise place of growth in Britain,
though we have it from Sweden, Switzerland and France.—A very distinct
species, 1-2 inches broad, black, without fibres beneath, finely granulated
with pale cartilaginous warts like shagreen; browner towards" the edee
Upper-nde grey, very minutely cracked, without veins or plaits: white
and mealy in the middle. Tubercles rare, minute, seldom perfectly
p aited. It would be very desirable to ascertain positively whether this
plant has a right to a place in the British Flora. Our specimens from
* ranee are quite different from any British species.
7. G. pellita, Ach. (fleecy Gyrophora); thallus simple or
many-leaved coriaceous sinuato-lobate dark greyish copperygreen
(brown when dry) very smooth, beneath at the maririn
coal-black with dense pulvinate fibres, apothecia sessile at
length somewhat globose most copiouslv and intricately plaited—Ach.
Syn. p. 67.— Lichen peMtus, Ach. Prodr.— E. Bot
t 931.—L veUeus Huds.—L. polyrkizus, Ligtof.—UmbUicaria
depressa, /3. F. Schccr. Lich. Helv. Spicil. p. 83.—Dill. Muse.
t. 30. j. 130.
Northern mountains, upon rocks.—The apothecia of this are verv different
from those of any other British species, and resemble the finest
and most beautiful filigree-work.
25. Umbilicaria. Fee, Hoffm. (part of,) Umbilicaria.
Thallus foliaceous, coriaceo-membranaceous, pustuled, fixed
by the centre, peltate. Apothecia orbicular, somewhal concave
adnate, covered by a black membrane, the disk at length tuber-
£ed, with ^border of its own substance.—Name,— Umbiln
from the umbtlicated frond or thallus.
I. U. pustuldta, Schrad. {blistered Umbilicaria); thallus
spreading simple covered with wart-like blisters greenish-grey
Jpalegrey and pruinose when dry) blacker at the margin which
is variously lobed and bearing copious tufts of black hairs which
sometimes extend to the disk, beneath grey-brown deeply pitted[naked,
apothecia few plan,- bordered at length often tuberelejL—
Schrad. Spirit. . P 102. Hoffm, PL Lich. t. 28. /'
U 29 f. 4^Lecideapustulata, Ach. Meth.p. 85—Ztdfoi pus-
L
' ^^GynphcrapustutoatAch. Syn.
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