The English flora - SeaweedAfrica

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231 LICHENES. [Cladon
j$. Thallus (or podetium ?) Jlstulose. Apothecia hemispherical
fleshy (cephalodia).
FAM. XVII. CLADONIEiE.
(Part of, Hoffm.— Cenomyce, part of, Ach.)
37. Cladonia. Fee. Cladonia.
Thallus (podetium, Ach.) somewhat shrubby, branched, rarely
simple, leafy with scales, which are often evanescent, branches
cartilaginous rigid fistulose, all attenuated and subulate, divided,
fertile, generally perforated in the axils. Apothecia (cephalodia)
sessile, orbicular, convex, capituliform, not bordered, fixed by
the circumference, free beneath in the centre, the sides reflexed,
uniform within. (Fee.)—Name; xXaSoj, a branch; the rami-
fications being often copious I have followed M. Fee in distinguishing
those species of Cladonia (or Cenomyce, Ach.) which
have subulate branches, from those whose apices are cup-shaped,
but I am by no means sure that the characters are to be
depended upon. The determination of the species, both of
this and the following genus, are attended with the greatest
difficulty, on account of their variable character ; and in the
present state of my knowledge I dare not venture upon introducing
others than those published in English Botany. Much attention
has been given to this genus by Delise in the Botanicon
Gallicum, who, with Acharius, unites this and the two following
genera into one, Cenomyce, and enumerates 53 species, besides
many marked varieties, as natives of France ; all of which are
most probably natives also of Britain. He would render an
acceptable service to British Botany who should undertake a
monograph of the British Cladoniece.
1. C. vermicularis, De Cand. (Vermicelli Cladonia); podetia
spreading horizontally pure white subulate simple or slightly
branched, branches tapering at each end. Schcer. Lich. Helv.
Spicil. p. A4:., Lich. Exsicc, n. 128.— Cenomyce vermicularis,
Ach. Syn. p. 278.
Lichen vermicularis, Swartz.—Dicks. Cr.
Fasc. 2. p. 23. t. 6.f. 10. E. Bot. t 2029.
Not unfrequent on bare ground, on the lofty mountains of the North
of England and Scotland.— This has a very remarkable appearance and
is quite different from all the other species of the Genus, lying prostrate
on the ground and of a pure white colour, smooth, and the surface
resembling, from the shape of its branches, small worms. The fructification
is unknown.
2. C. uncidlis, (short perforated Cladonia); podetia elongated
smooth cylindrical pale yellowish-white dichotomous the axils
much perforated, the branchlets short patent at the extremity
acute and rigid. Cenomyce uncialis, Ach. Syn. p. 276. Lichen
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