340 LXXV. COMPOSITiE. Helunthus. 



Western States ! Stem 3— 5f high, scape-like, slender. Leaves 3—5' by 1—2', 

 upper ones 1—2' long. Heads tew, middle size. Rays 12—15, light yellow. 

 Jl. — Sept. 



(J. H. ciNEREUS. Torr. & Gray. SulUvanfs Sunjlmoer. 



"Rough with a cinerous pubescence; Ivi. ovate-oblong, rather acute, ap- 

 pressed to the stem, serrulate, sessile, the lower narrowed lo a winged petiole; 

 ped. naked, slender ; Va/es lanceolate, canescent; mL villous at summit. 



S. SuUlcaatii. Larger and more branched; st. scabrous-hirsute; Ivs. ob- 

 scurely serrate, acute, the uppermost entire, often alternate. — Near Columbus, 

 Ohio. Sullivant. Stem 2— 3l high, virgate, sometimes a little branched, bear- 

 ing a few heads nearly as large as those of H. mollis." PI. Am. II. p. 324. 



7. H. MOLLIS. Lam. (H. canescens. Mlchx.) Soft-leaved Sunfiower. 

 St. villous; its. ovate, acuminate, sessile, cordate and clasping, entire or 



subserrate, tomentose-canescent, opposite, upper ones sometimes alternate; 

 scales of infolucre lanceolate, villose-canescent ; chaff entire, acute and canes- 

 cent above.— Prairies and barrens, Ohio ! la. ! Mo., common. A hoary and 

 villose species, 2 — 4f high, nearly simple. Leaves 3 — 5' long, J — | as wide. 

 Rays 15 — 25, i— 1' by i' wide. Jl.— Sept. 



8. H. DORONicoiDEs. Lam. Leopard' s-batie Sunflower. 



St. branched, rough or hirsute above ; Im. opposite, petiolate, or the uppel 

 alternate and subsessile, ovate and ovate-lanceolate, acuminate, tripli-veined, 

 serrate, scabrous above, smooth or pubescent beneath ; scales lance-linear, cili- 

 ate, a little longer than the disk; rays 12— 15.— A large species, common in 

 the Western ! and Southern States. Stem 4 — 7f high, with irregular, alternate 

 branches. Leaves 3—10' by 1—3'; petioles i—l' long. Rays very showy, 

 15—20" by 4—6". JL— Sept. 

 /?. puhescens. (H. pubescens. Hook.) Lvs. tomentose beneath, subsessile. 



9. H. STRUMosus. Dovnij Siuijlower. 



St. smooth below, scabrous above ; Ivs. ovate-lanceolate, acute, serrate, 

 scabrous above, .smooth or tomentose-canescent beneath; Ms. few, about 10- 

 rayed ; scales ciliate, equaling the disk, squarrose-spreading at tip. — % Grow.s 

 in swamps, &c.. Can. and U. S. Stem 3— 5f high, erect, branching above. 

 Leaves petiolate, with an acute point and close serratures, the lower surface va- 

 rying in the degree of pubescence. Rays bright yellow, an inch or more in 

 length. Scales hairy. Jl. 



10. H. DECAPETALUs. Ten-raijed Sutiflmvcr. 



Lvs. opposite, ovate, acmninate, remotely serrate, 3-veined, .scabrous 

 above, smooth or nearly so beneath; invol. scales lanceolate-linear, subciliate, 

 spreading, nearly equal ; rays 10—12, pale yellow.— Copses, along streams, 

 Can. to Car. and Ky. Stem 3 — 4f high, purplish. Involucre varying in all 

 deo-rees of leafiness between the present Ibrm and the variety following. Aug.f 

 0. frondosus. Hook. (H. frondosus. Lirm.) Oi;/<?r5Crtfe5 larger and leat-like. 



11. H. TRACHELIIFOLIUS. Willd. 



SI. strict, branching, scabrous or with scattered hairs ; lvs. opposite, those 

 of the branches mostly alternate, thin, scabrous both sides, tripli-veined, ap- 

 pressed, serrate, acuminate, petiolate, lower ones ovate, middle lance-ovate, up- 

 per lance-linear; 5cafe5 lance-linear, attenuate-acuminate, longer than the disk, 

 loosely spreading, ciliate ; cAa^slightly 3-toothed; rays 12 — 15.— A tall, hand- 

 so ne species, not'uncommon "in thickets, &c., Ohio! and la. ! Stem purplish, 

 3— 6f high. Leaves 3—6' by i— SJ' ; petioles i— U' long. Heads middle size, 

 at top of the slender, suberect branches. Ra,vs expanding 2—3'. 



12. H. HiRsuTus. Raf. (H. diversifolius. Ell.) 



St. simple or dicholomous above, scabrous, hirsute ; lvs. opposite, petio- 

 late, subserrate, 3-veincd, ovate-lanceolate, obtuse at base, acuminate, very sca- 

 brous above, hirsute beneath; scales ovate-lanceolate, acuminate, hirsute, as 

 long as the disk ; rays 11—15. — Dry soils, Western and Southern States. Stem 

 4_7f liigh, with irregular, alternate branches. Leaves 3—10' by I — 3', petio- 

 les 1—1' "long. Rays very showv, 15—18" by 4 — 6". Jl.— Sept. 

 A?, piiieicens. (H. pul>oseenB. 'Hoal-.) Lvs. tomentose beneath, subsessile. 



