390 ORDER LXVIII. COMPOSITE. 



pubescent, 10 — 12 ; pappus subulate, chaff hispid. — Yello-w. It. Aug. 

 — Oct. Middle and Western Geo. 4 — 6 feet. 



12. H. doronicoj'des, (Lam.) Stem branching, hirsute above, gla- 

 brous below. Leaven ovate, or ovate lanceolate, serrate, acuminate, pu- 

 bescent beneath, nearly or quite sessile, usually opposite. Heads large, 

 chaff hairy at the summit. — Wet places. 5 — 8 feet. 



13. H. strumo'sus, (L.) Stem erect, slender, glabrous, sparingly 

 branched. Leaves opposite, narrow, tapering toward the summit, long, 

 pubescent beneath. Flowers few, terminal, small for this genus ; in- 

 volucre shorter than the disk, with fringed leaves; ray florets about 6 ; 

 pappus setaceous ; chaff pubescent. — Yellow. 2£. Aug. — Sept. 3 — 4 ft. 



b. Florets of the disk yellowish. 



14. H. hirsu'tus, (Raf.) Stc7n simple, or dichotomously branched 

 above, hirsute, glaucous. Leaves opposite, on short petioles, ovate- 

 lanceolate, broad or narrow, entire, or slightly serrate, acuminate, sca- 

 brous, pubescent above, hirsute, pubescent beneath, 3-nerved. Heads 

 few, 12-raye.d; leaves of the involucre spreading, recurved, narrow- 

 lanceolate, longer than the disk. — Yellow. %. July — Aug. Dry 

 woods. Middle Georgia. 



A very variable species, especially in regard to the leaves, varying 

 from a broad ovate-lanceolate leaf, 6 inches long 2 wide, to a very nar- 

 row lanceolate leaf 2 inches long and 4 lines wide. The lower leaves 

 often the smallest and narrowest, increasing in breadth upward. — //. di- 

 versifolius, Ell. y H. trachyphyllus, T. <fc G. S H. stenophyllus, T. <fe G. 



13. H. trunca'tus, (Schw.) Stem glabrous, slender, simple, or divided 

 at the base. Leaves opposite, rounded at the base, ovate, serrate, ta- 

 pering toward the summit, hairy, sessile. Flowers terminal ; involucre 

 ■with the leaves somewhat hispid on the inner surface; ray florets 10 — 

 12; pappus subulate; chaff of the receptacle pubescent. — Yellow. 21. 

 Aug. — Oct. Western Georgia. 2 — 3 feet. //". divaricatus, L. 



16. H. divarica'tus, (Ell.) Stem glabrous, branching. Leaves ovate- 

 lanceolate, serrulate, tapering toward the summit, scabrous on the up- 

 per surface, pubescent beneath. Flowers numerous, small, in terminal 

 panicles; involucre with acute ciliate leaves ; ray florets 5 — 10; pap- 

 pus consisting of 2 hairy awns. — Yellow. If. Aug. — Sept. 5 — 6 feet. 



H. microcephalus, T. & G. 



17. H. Scmweinit'zii, (T. <fe G.) Stan erect, pubescent, branching. 

 Leaves narrow-lanceolate, sparingly serrulate, almost sessile, scabrous 

 above, tomentose beneath. Heads on slender canescent peduncles 

 scales of the involucre hairy ; rays 8 ; pappus short. — N. Car. 3 — 6 ft. 



18. H. longifo'lius, (Puish.) Stem glabrous, tinged with purple, pa- 

 niculately branched. Leaves long-lanceolate, nearly sessile, glabrous 

 the upper ones entire, the lower ones serrate and connate. Flowers 

 at the extremities of the branches in corymbs ; involucre with nearlj 

 glabrous leaves ; ray florets about 10 ; pappus subulate ; chaff of the 

 receptacle 3-toothed. — Yellow. 2£. Sept. — Oct. In damp soils. 

 Western Geo. 3—4 feet. 



19. H. iiispidu'lus, (Ell.) Stem erect, scabrous. Leaves opposite, 

 ovate-lanceolate, tapering toward the summit, serrulate, slightly hispid 

 beneath; involucre with scabrous, ciliate leaves ; pappus subulate, pu- 

 bescent ; chaff 3-toothed. — Yellow. June — Sept. Mid. Geo. 3 — 4 feet. 



