AND GENERA OF PLANTS. : 403 
SOLIVA. (Ruiz and Pavon.) aa 
"Sou *daucifolia; hirsute, diffuse, dichotomous; leaves long petiolate, bi- 
pinnately divided, the lobes mostly three-parted, segments linear, sublanceo- 
late, acute; capituli sessile in the forks of the stem; achenium obovate, sca- 
brous, slenderly margined, convex externally, and minutely a at the 
summit. 
Has. On the dry grassy downs within the limits, and in the immediate vicinity of St. Barbara, 
Upper California, Annual, at first smooth; involucrum and upper leaves very hirsute, the former 
about five-leaved. Stigma filiform, distinctly bifid. Plant about two inches high, extending four 
or five inches; the persistent style or rather its sheath, extending out like a rigid spine. 
GNAPHALIUM. (Linn.) 
Gnaphahum Californicum; ©, Decann. Prod., Vol. VI., p. 224. 
Has. Common round St. Barbara, Upper California. Flowering in April and May. It appears 
to have a near affinity to G. decurrens, but with a different pubescence. 
Gnaphahum Sprengelii? ©. 
Has. Near St. Barbara. Of this I have seen but a single specimen. It is nearly allied to the 
preceding, but has occasionally a thin tomentum spread over the leaves in addition to minute 
glandular hairs. The scales of the involucrum are also pale purple. As a variety, I would dis- 
tinguish it as 8. * erubescens. 
Gnaphahum luteo-album; 3. *occedentale, a much larger plant than the Eu- 
ropean species. The lower leaves inclining to be decurrent; capituli also 
larger. 
te Wappatoo Island, and the banks of the Oregon, &c., also in Upper California and Chili, 
(according to a specimen from Dr, Styles.) It is probably the G. Vira-vira of Molini. 
Gnaphahum * palustre; ©, softly, floccosely lanuginous and canescent; stem 
much branched; leaves oblong, or oblong-linear, acute, subamplexicaule ; flow- _ 
ers in somewhat hemispherical, very woolly, bracteolate or foliaceous clusters; 
scales of the involucrum white or brownish, linear, and rather obtuse. 
Has. Rocky Mountains, Oregon, California and Chili. A very branching plait, allied to G. 
uliginosum, but with broader leaves, and a looser cotton-like tomentum; the involucrum also 
nearly white, with narrower scales, and nearly all of them tomentose to near their summits. In 
an advanced state it becomes exceedingly lanuginous and almost like loose flocks of cotton. The 
receptacle flat and naked; the size exceedingly variable, being from an inch to a span high. 
Gnaphalium * gossypinum; ©, white and floccosely lanuginous; stem nearly 
simple? erect; radical leaves spathulate-lanceolate, acute, cauline crowded, 
