The English flora - SeaweedAfrica

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216 L1CHENES. [Nejjhroma.
brown. Sm.—Ach. Meth. p. 283. t,
Ach. Frodr.—E. Bot. t. 1542.
2. /. 2. Lichen spurius,
Hedge-banks in Sussex and Suffolk.—This and the two following
species I am not at all times able to distinguish from P. canina. The
present, established by Acharius, appears to me as distinct as any, yet
in his Synopsis, the same author has referred it to the common state of
P. canina.—It forms small ascendant /mufr, almost every lobe of which
is fertile : apothecia rather large.
7. P. rufescens, Ach. Meth. (dark-coloured Ground Peltidea);
thallus rigid concave even dark reddish-brown pale downy with
obsolete veins beneath, the lobes rounded with numerous fruitbearing
processes, apothecia vertical roundish dark-brown with
a pale border. Sm.—Lichen rufescens, Neck. Muse.—E. Bot.
L. caninus, (3. rufescens, Huds.— Lightf.—Peltidea
canina, (3. crispa, Ach. Syn. p. 239 Dill. Muse. t. 27. f. 103.
On banks, among grass and mosses, frequent.—This again seems to
be a Lichen, respecting which the great Acharius has changed his opinion;
which ought to teach us caution, at least, in adopting it as a species,
for except in hue, it seems scarcely different from the preceding.
t. 2300.
8. P.polyddctyla, Ach. (many-fingered Peltidea); thallus glaucous-green
naked glabrous with brown reticulated veins beneath,
fertile lobules very numerous and crowded and as well as the
brown terminal apothecia cucullato-revolute.—Ach. Syn.p. 248.
Hook. Fl. Scot. P. II. p. 6l.—Peltigerapolydactyla, Hoffm. FL
Germ—Lichen Polydactylies, Jacq. Coll. v. 4. t. 14./. 2. a. b.
Lichen caninus, y. Lightf.—Dill. Muse. t. 28. f. 107, 108.
On the ground, on grassy or mossy banks and on low walls, frequent.
—This was well distinguished by Dillenius and Lightfoot, as also by
Acharius ; but whether it ought to constitute a species, is a point I am
unable to determine.
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23. Nephroma. Ach. Nephroma.
Thallus foliaceous, coriaceous or membranaceous, spreading,
lobed, naked or hairy beneath, the lobules fertile. Apothecia
(peltce) orbicular, reniform, adnate on the underside of the lobules
or proper portions of the thallus and having a border formed or
the thallus.—Named from r,(p^ ? , a kidney and ow (or rather
epos), like, from the kidney-shaped apothecia.—This differs from
Peltidea only in the situation of the apothecia.
1. N. resupindta, Ach. (resupinate Nephroma); thallus greyish-brown
smooth lobed and imbricated, fertile lobules very
short erect pale pubescent and granulated beneath, apothecia
large numerous red-brown with an uneven border. Ach. Syn.
p. 241. Lichen resupinatus, Linn.—E. Bot. t. 305 Dill. Muse.
t. 28. f. 105.
Trees and mossy rocks, chiefly in subalpine districts.
2. N. parilis, Ach. (Chocolate Nephroma); thallus somewhat
coriaceous lobed jagged crenate and wavy greenish or pur-
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