SYNGENESIA. SUPERFLUA. 167 



Radial florets obiotii;. Re<erf(icle naked. Pap- 

 pus paleaceous, minute, 5 to 8-leaved, leaflets 

 obtuse, awnles.s. 



Herbaceous; leaves alternate? or opposite, palmateily 

 p'.nnatifid, tom'.'ntose or villous; peduncles l-floweied, di- 

 chotomal and terminal. 



Species. 1. T. lanatum. ActineUa laimta, Pn. 2. p. 560. 

 Every where whltely and lanuijinously tomtntose; leaves 

 alternate, those of the stem subpalmately pinnatiii;!,ot'the 

 branches linear and entire; peduncle elong-ated, the sum- 

 mit thicker. IIab. Near tlie sr.iirces of Columbia river. 

 M. Lewis. Flowering in June and July. v. s. in Herb. 

 Lambert. — Perennial; stem erect and branching", about a 

 foot hig-h. Leaves alternate? (perhaps not constantly so) 

 those of the stem elong-ated, narrow at the base, dilated 

 and divided pinnatificlly above, divisions ligulate and 

 somewhat toothed, uppermost entire. Calix oblon.q^-cy- 

 lindric, composed of a simple series of leaves, about 12 

 to 14, iincar-ianceolate, acute. Rays about the s.i.me num- 

 ber, oblong, bidentate. Pappus 5 to 8-leaved. Seed pen- 

 tangular? glabrous, attenuated downwards. — The flowers 

 are bright yellow, and in form and character strongly re- 

 semble those of the genus Tagetes. 



2. * opposUifoli\':-n. Decumbent and much branched, 

 shortly and canescent'y pubescen;; leaves opposite, all 

 palmately trifid, segmer>ts ligulate, simple, or divaricately 

 subdivided; peduncle filiform, mostly dichotomal, scarcely 

 longer than the leaves. Hab. On denudated sterile hills, 

 near Fort ^Iandan; abundant. Flowering in July and 

 August. — Perennial? stem diffuse, 6 to 12 inches high, 

 grooved; oppositely branched. Leaves petiolate, trifid, 

 canescent, pubescence very siiort, segments about an inch 

 long, thickish and oijaque. the lateral ones mostly bifid, 

 the central one often trifid, all somewhat obtuse and li- 

 neal*. Peduncle slender, 1 to 2 inches long, a liule thick- 

 er under the cahx. Calix oblong-cylindric, simple, leaf- 

 lets J to 8, oblong-ovate, erect; I'ays about the same num- 

 ber, very short. Pappus paleaceous, 5 to 8-leaved, mi- 

 nute, leafle-s partly obuise and someu-hat lacerae. Seed 

 nearly smooth, rather long, and attenuated downwards, 

 or inversely conic. Receptacle small and naked. — The 

 whole of this plant is very sensibly bitter and destitute of 

 aroma. 



There is nothing in the habit of this genus which would 

 lead us to suppose it allied to ActineUa of Ju?.sieu, and 

 scar'-ely more in the generic character. In Acti-xella the 



