33-2 COMPOSITE. Helianthds. 



lected in the same region durin,2; Major Long's second expedition ; in which 

 all the leaves are opposite and somewhat spalulate, the canline hroader, and 

 nearly agreeing with the character of Mr. Nuttall's H. pumilus. 



34. H. Doiiglasii: upper parr of the stem and hranches scahrous-hirsute; 

 the leaves alternate, rhomboid-oblong, scabrous-pubescent, obscurely tripli- 

 nerved, entire or slightly toothed, contracted into winged petioles; peduncles 

 terminal, naked ; exterior scales of the involucre foliaceous, linear-oblong, 

 obtuse, longer than the disk, spreading or reflexed ; rays 12 or more, small ; 

 chaff of the receptacle entire ; achenia glabrous ; pappus of two deciduous 

 subulate chaffy awns. 



California, Douglas ! — The imperfect specimens from which we have 

 ventured to describe this species (mentioned by Hooker & Arnott in the sup- 

 plement to Capt. Beechey's Voyage, p. 153), consist only of branches, or of 

 the summit of the stem, which appears to have been weak or decumbent : 

 the leaves are 2-3 inches long, including the cuneiform base or winged 

 petiole. 



35. H. hispidulus (Ell.): stem scabrous ; leaves opposite, sessile, ovate- 

 lanceolate, tapering towards the summit, serrulate, scabrous on the upper 

 surface, paler underneath and slightly hispid ; scales of the involucre ovate- 

 lanceolate, ciliate ; chaff 3-tootlied, Ell. sk. 2. p. 419. 



Pine barrens near Louisville, Georgia. Sept.-Oct. — Stem 3-4 feet high. 

 Leaves long, narrow, tri|)linerved, very obscurely serrulate. Involucre as 

 long as the disk. Rays 8-10, about an inch long. Ell. — So wretched are 

 the original si)ecimens in Elliott's herbarium, now before us, that we are un- 

 able to offer any decided opinion respecting this species ; except that it is not 

 H. divaricatus, but more likely to ])rove a variety of H. strumosus. The 

 leaves, although nearly or quite sessile, are contracted at the base, paler be- 

 neath, and beset with small and scattered, rather rigid white hairs along the 

 veins, and sprinkled with minute resinous atoms (under a lens), similar to 

 what we frequently observe in H. strumosus. 



36. H. nudtifloriis {\A\m.): rhizoma terete, inflexed ; stem erect, branch- 

 ing, scabrous ; leaves alternate, sometimes opposite, or the lowest ternate, 

 petioled, toothed, triplinerved, scabrous; the lower cordate, the upper ovate; 

 scales of the involucre lanceolate, the exterior linear-lanceolate, ciliate, 

 spreading, but not squarrose ; rays oblong, numerous. DC. — Linn.! (hort. 

 Cliff.) spec. 2. p. 905 ; Ait. Kew. {eel. 1) 3. p. 248 ,• Lam. ill. t. 706 ; Bot. 

 mag. t. 227 ; DC. jvodr. 5. p. 590, probably not of Pursh, (tec. 



Virginia, according to authors (Equatorial America, Hcjrt. Cliff.): but 

 we have seen no native specimens that correspond with the cultivated plant, 

 which has been known in Eurojiean gardens for more than 200 years. We 

 greatly doubt if it were derived from this country ; but if so, it probably ori- 

 ginated either from H. decapetalus or H. doronicoides. It is well character- 

 ized by Linnreus as having cordate-ovate leaves, with the scales of the 

 involucre [elongated linear-lanceolate] loosely imbricated, neither squarrose 

 nor drooping. 



t t Iiitrocluceel species, 



37. H. tuberosus (Linn.) : root bearing oblong tubers ; stem erect, branch- 

 ing, scabrous; leaves alternate, petioled, triplinerved, scabrous, serrate; the 

 lower [opposite] cordate-ovate; the upper ovate, acuminate; petioles ciliate 

 at the base; scales of the involucre linear-lanceolate, ciliate. DC. — Jacq. 

 hort. Vindoh. t. 161 ; Schkuhr, handb. t. 258 ; Beck, hot. j;. 203; Darlingt. 

 fl. Cest. 2J. 484. 



Naturalized along fence-rows, &c., in many places, where it becomes 

 a troublesome weed. Said to have been derived originally from Brazil : 



