The English flora - SeaweedAfrica

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Alectoria.] LICHENES. *2*27
smoothish very much branched greenish-grey, the main stem
stout articulated the branches very Jong slender capillary intricate
sometimes bearing fleshy tubercles. Ac/i. Syn.p. 306. Lichen
barbatus, Linn—L. articulatits, (3. E. Bot. t. 258. /. 2. Dill.
Muse. t. 12. /. 6 3. articulata ; articulations of the stem re-
markably swollen.
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Ach. Syn. p. 306.
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Lichen articulatus,
Linn.—E. Bot. t. 258./. \.—Dill. Muse, t.ll.f.4.
On trees in old woods, particularly in subalpine districts. The var.
/S. I have gathered on sands at Kxmouth Warren, Devon ; and I possess
very fine specimens from sands by the sea- side near Malahidc,
Ireland, sent me by .7. T. Mackay, Esq.— No apothecia arc described
by Acharius, nor have they been ever found on British specimens. May
it not be a variety of one of the preceding? or rather may not all be
considered as mere forms of one species ? The same and various intermediate
states are found in almost all parts of the world.
/3. Thallus without a central thread, sometimes slightly compressed.
FAM. XV. CORNICULARIE^.
32. Alectoria. Ach. Alectoria.
Thallus cartilaginous, subfiliform, branched, prostrate or pen-
dulous, somewhat fistulose and cottony within. Apothecia or-
bicular, thick, sessile, plane or convex, more or less bordered,
entirely formed of the thallus and of the same colour.—Name ;
xMKru^oq, a mane or hair, according to Acharius, but the word
will not bear such a construction, nor any that is applicable to
the plant.
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1. A.jubdta, Ach. (wiry Alectoria, or Rock-Hair); thallus
tufted generally pendulous very much branched (dive-brown
smooth shining, brandies filamentous slender often compressed
at the axils bearing powdery whitish warts, apothecia sessile
blackish with an entire
jubaius, L'mn.—E. Bot.
margin. Ach. Syn. />. 291. Lit Inn
t. isso.— Dill. Mute. t. 12./ 7.—
/3. chalybeiformis ; branches shorter suberect or decumbent.
Ach. Syn.p. 291. Lichen jufiatus, (3. E. Bote. L880, vppet
figure.— Lichen chalybeiformis, Linn.— Dill. Muse. t. \:i.f. H>.
Trunks of trees, especially of Rrsj upon rocks ami old pales ; abuwd.uit
in subalpine countries. Apothecia (if they were really such), wen
found l>y Mr. Turner and myself in the Highlands in 1807 and are
figured in B. Bot.; they are sessile, frequently
narked ami nigged with age. 1 innKUfl tells
oblong, the disl at length
us that in winter, when
the snow i> vei) deep upon the ground, this Lichen supplies the Rein-
deer with food;—for this purpose the Laplander cuts down the trees,
that the plant upon the topmo-t branches may he accessible tO this
Useful animal.
2. A. sfir/th-iitosa. AA\. (
f niilm;/ liectoria); thallus prmuni-
hent somewhat compressed pale sulphur-colour pined smooth
branctied tin- branches rery much divaricated and forked the
ultimate one* short and eapilhuy. apothecia scattered Inters
sessHe coneswe greenish Heih-oolour with an entire border.
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