[ 2083 ]
H I E R A C I U M Lawsoni.
Glaucous Hairy Haxvkweed.
SYNGENESIA Poiygamia-cequalis.
G en. C har. Recepl. nearly naked, dotted. Cal. imbricated,
ovate. Down simple, sessile.
Spec. Char. Stem remotely branched, not striated.
Leaves almost all radical, stalked, elliptic-lanceolate,
decurrent, glaucous, fringed, nearly entire.
Syn. Hieracium Lawsoni. Pillars. Dauph. v. 3. 1 18.
t. 29, bad.
H. glaucum pilosum, foliis parum dentatis. Dill,
Elth. 180. t. 149.
H. leptocaulon hirsutum, folio longiore D. Lawson.
Raii Syn. ed. 2. 74. ed. 3. 169.
L lV IN G plants of this Hieracium were communicated to u$
from the Cambridge garden, by Mr. Donn, as undoubtedly
of British growth. It is evidently the above plant of Dil-
lenius, though he seems not to, have hit on the proper synonym
of Ray, but rather referred it, not without doubt, to one
which belongs to the true murorum, t. 2082. Our plant agrees
precisely with the specimen of the H, Lawsoni of Villars,
mentioned in Tr. of L. Soc. v. 9- 241, to which place we
refer the botanical critic for further remarks on this subject,
requesting him to erase the above synonyms of Ray and Dil-
lenius from H. sylvaticuni (3 in p. 240, the question respecting
them being now decided.
This flowers in July, and has an abrupt perennial root, with
thick fibres-. The herbage is of a full unpolished glaucous
green. Stem erect or spreading, a foot high, round, hairy,
very even and not striated, divided into a few long and remote
branches, beset in their upper part with black, prominent,
glandular bristles, and cottony at the top. Radical leaves
numerous, elliptic-lanceolate, acute, nearly entire, hairy,
especially their edges and midrib; the base tapers down into
a long, bordered, fringed footstalk. One similar but sessile
leaf stands usually near the bottom of the stem ; the upper
ones are scarcely more than bracteas. Flowers solitary at the
top of each branch, larger and paler than those of H. murorum,
with a broad dark hairy calyx.------ The plant abounds with
bitter milk.— --The synonyms in Villars are incorrect.