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L I C H E N Smàragdulus.
Little Emerald Lichen.
CR YPTOGAMIA Algce.
Gen. Char. Male, scattered warts.
Female, smooth shields or tubercles in which the
seeds are imbedded.
Spec. Char. Frond simple, depressed, cartilaginous,
peltate, roundish, smooth, greenish-yellow, with
one root. Tubercles in immersed brown dots.
Syn. Endocarpon smaragdulum. Ach. Meth. Suppl. 29.
L o n g ago sent us from the county of Durham by our
worthy friend the Rev. Mr. Harriman, from whom we learn
that having sent it to Professor Acharius, he has lately been
informed of the above synonym, and that Mr. Wahlenberg
had found the same in Norway.
This minute plant is of that tribe of Lichens called by recent
botanists Endocarpon, which probably will be established
in future as a genus. We have described one of the family v. 9.
t. 595, which is now Endocarpon Hedwigii of Acharius. The
present is very distinct, being even more minute than that,
closely pressed to the exposed sand-stone on which it grows,
and fixed by a central root. The frond is cartilaginous,
roundish, sometimes obscurely crenate, smooth, of a yellowish
green, occupied by numerous little brown dots, each of
which contains an immersed-concave tubercle or shield.
Ûctd'J. 7ki