The English flora - SeaweedAfrica

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Stereocaulon.] LICHENES. 033
Rocks and stones, in the mountainous districts; and on the Sussex
sand-rocks. Borr.
36. Stereocaulon. Ac/i. Stereocaulon.
Thallus cartilaginous or somewhat woody, branched and
fruticulose. Apothecia turbinate, sessile, solid, plane, scarcely
rising above the border, the disk at length spreading-, covering
the border and reflexed.—Name; trse-ov, solid and x*«A«$, a
stem, by which character it is distinguished from some other
fruticulose Lichens.
1. S. paschdle, Ach. (much-branched Stereocaulon)} tballus
greyish branched and .rough with granulated excrescences,
branches crowded and very much divided, apothecia scattered
and terminal at length convex conglomerate blackish-brown.
Ach. Syn. p. 284. Lichen paschcdis, Linn E. Bot. t. 282.
Dill. Muse. t. 17. /. 33.
Rocks and stones, abundant in mountainous countries.
2. S. botrt/osum, Ach. (clustered Stereocaulon); tballus
whitish-grey somewhat naked below above very densely branch-
ed, the ultimate branchlets passing gradually into clustered
granules ; apothecia collected on the fertile brandies minute darkbrown.
Ach. Syn. j). 284.
Scotland, Afr. Borrer, who observes that it appears to be a dwarfish
var. of S. paschale.
3. S. condyloideum, Ach. (deformed Stereocaulon); tballus
whitish nearly naked, the branches short crooked somewhat
lobed knotted and granulose, apothecia on the lateral branches
at length dilated flat subsessile and appressed red-brown. Ach.
Syn. />. 285.
North of England, Mr. Thornhill. {Doner.)
4. S. Cereoltis, Ach. Meth. (simple-stalked Stereocaulon);
stalks (podetia ?) simple erect without powdery warts rising
from an uneven granulated crust. Borr Ach. Meth. p. 816.
/. 1.
7.f. Borr. it, /:. 1U,l Supplt 2667. S. cereolinum, Ach.
Syn. p. 285 Li