SYNGENESIA, SUPERFLUA. 167 
Radial florets oblong. Receptacle naked. Pap- 
pus paleaceous, minute, 5 te 8-leaved, leaflets 
obtuse, awnless. 
Herbaceous; leaves alternate? or opposite, palmately 
pinnatifid, tomentose or villous; peduncles 1-flowered, di- 
chotomal and terminal. 
Species. 1. 'T. lanatum. Actinella lanata, Pu. 2. p. 560. 
Every where whitely and lanuginously tomentose; leaves 
alternate, those of the stem subpalmately pinnatifid, of the 
branches linear and entire; peduncle elongated, the sum- 
mit thicker. Has. Near the sources of Columbia river, 
M. Lewis. Flowering in June and July. v. s. in Herb. 
Lambert.—Perennial; stem erect and branching, about a 
foot high. Leaves alternate? (perhaps not constantly so) 
those of the stem elongated, narrow at the base, dilated 
and divided pinnatifidly above, divisions ligulate and 
somewhat toothed, uppermost entire. Calix oblong-cy- 
Aindric, composed of a simple series of leaves, about 12 
to 14, linear-lanceolate, acute. Rays about the same num- 
ber, oblong, bidentate. Pappus 5 to 8-leaved. Seed pen- 
tangular? glabrous, attenuate downwards.—The flowers 
are bright yellow, and in form and character strongly re- 
semble those of the genus Juzetes. 
2. * oppositifolium. Decumbent and much branched, 
shortly and canescently pubescent; leaves opposite, all 
palmately trifid, segments ligulate, simple, or divaricately 
subdivided; peduncle filiform, mostly dichotomal, scarcely 
longer than the leaves. Has. On denudated sterile hills, 
near Fort Mandan; abundant. Flowering in July and 
August.—Perennial’ stem diffuse, 6 to 12 inches high, 
grooved; oppositely branched. Leaves petiolate, trifid, 
canescent, pubescence very short, segments about an inch 
long, thickish and opaque, the lateral ones mostly bifid, 
the central one often trifid, all somewhat obtuse and li- = 
near. Peduncle slender, 1 to 2 inches long, @ little thick- »_ 
er under the calix. Calix ylindr mple, leaf- 
lets 5 to 8, oblong-ovaie, erect; rays about the same num- 
ber, very short. Pappus 5 to 8-leaved, mi- 
nute, leaflets partly ob.use and somewhat laceraie. Seed 
nearly smooth, rather long, and attenuated downwards, 
or inversely conic. Receptacle smail and naked.—The 
whole of this plant is very sensibly bitter and destitute of 
‘tiees is nothing ia 
