Helianthus. COMPOSITiE. 319 



Texas, Dnnnmond I — Apparently a large plant, but the base of the stem 

 unknown, clothed with a very white wool, which on the stem is loose and 

 flocculent, on the leaves appressed. Lowest leaves (radical ?) G-8 inches in 

 diameter, obscurely serrate, on long petioles; the upper 2-3 inches long; the 

 uppermost bearing pretty large heads in their axils, on peduncles which are 

 seldom longer than the leaves. Rays about 20. Inner scales of the involu- 

 cre lanceolate, all finely acuminate. Chaff of the receptacle 3-cleft at the 

 apex. 



2. H. lenticularis (Dougl.) : st'em hispid, branching, stout; leaves hispid- 

 scabrous, alternate, ovate, serrate, obtuse at the base, petioled ; the lower of- 

 ten cordate, the uppermost often lanceolate and entire ; peduncles terminal, 

 sometimes paniculate; heads very large; scales of the involucre oval or 

 ovate, ciliate, abruptly and conspicuously acuminate ; achenia appressed- 

 pubescent, otlen as long as the corolla of the disk ; the latter villous at the 

 base; pappus of 2 lanceolate chaBy awns. — Dougl. in hot. reg. t. 1265; 

 Hook.! fi. Bor.-Am. 1. p. 31.3 ; DC. ! jmidr. 5. p. 586; NultJ in trans. 

 Amer. fhil. sac. I. c. H. tubffiformis, Nutt. gen. 2. jj. 177 .'' H. erythrocar- 

 pus. Bard. ind. sem. liort. Gatt. 1839 ? [Linntva, sicppi. 14. p. 125.) 



j3. corolla of the disk sparsely villous at the base (lower leaves sometimes 

 opposite, and the scales of the involucre narrower). — H. multiflorus, Hook. ! 

 I. c. partly. 



Interior of Oregon, Douglas, NuUall ! and from the Platte to Louisiana! 

 Arkansas ! and Texas ! /i. Saskatchawan, Drummond ! Upper Missouri, 

 Mr. Nicollet! July-Sept. — A large plant, resembling H. annuus, with a 

 rough hispid (often spotted) stem; the involucre 1-2 inches broad; the rays 

 sometimes 2 inches long and 6-10 lines wide. The stem exudes a resin 

 when wounded. The Indians employ the seeds for food. 



3. H. petiolaris (Nutt.) : stem strigose or hispid, branching ; leaves sca- 

 brous, alternate (the lower not unfrequently opposite), ovate-lanceolate or 

 ovate, entire or nearly so, on very long petioles ; peduncles terminal, naked, 

 bearing solitary (large) heads ; scales of the involucre lanceolate, acute or 

 acuminate ; corolla of the disk minutely pubescent or canescent at the base ; 

 achenia villous ; pappus of 2 chaffy awns. — Nutt.! in jour. acad. Philad. 2. 

 p. 115 ; Sweet, Brit. fl. gard. {ser. 2) t. 75 ; DC! prodr. 5. p. 586. H. 

 patens, Lehm. ! ind. sem. Hamh. 1821, p. 8.'' H. integrifolius, Nutt. in 

 trans. Amer. jjhil. soc. (n. ser.) 7.^. 366. 



Upper Missouri, Nuttall! Mr. Nicollet! and Arkansas! in arid places. 

 Aug. — Stem erect, 1-3 feet high. Heads, including the (12-20) large rays, 

 3-4 inches broad. Scales of the involucre narrowly or broadly lanceolate, 

 with a conspicuous acuminalion, or merely acute. Leaves mostly acute at 

 the base. 



4. H cucumerifoUus : hispid-scabrous ; stem branching ; leaves alternate, 

 or the lower opposite, all cordate, acute or acuminate, coarsely serrate-toothed, 

 on slender petioles; peduncles terminal, naked, bearing a single, or 2-4 

 clustered (sessile) small heads ; scales of the involucre narrowly linear-lan- 

 ceolate, attenuate-acuminate; corolla of the disk glabrous at the base; ache- 

 nia hairy ; pappus of 2 minutely pubescent small chaffy awns. 



Texas, Drummond! July-Sept. — Lower part of the stem unknown ; but 

 apparently a small species; the branches spotted, terminating in a slender 

 peduncle 4 to 10 inches long. Leaves 1-3 inches long, deltoid-cordate, an- 

 gulate-toothed, both sides very scabrous. Heads half to two-thirds of an 

 inch in diameter, often in a cluster of 2-4 at the apex of the peduncle. 

 Scales of the involucre lax. Rays about 15. Chaff of the receptacle (or 

 middle lobe) produced into a slender acumination. Achenia oblong, clothed 

 with appressed villous hairs. 



