ORDER LXVJII. COMTDSlTil^. 391 



20. H. spaksifo'lius, (Ell.) Stem scabrous, with long slender branch- 

 es, nearly glabrous. Leaves opjjo^ite, ovate, coarsely toe-thed, hispid, 

 scubrout^, the upper ones nearly sessile. Flowers in loose panicles ; in- 

 volucre with the leaves finely ciliate ; ray florets about 14; pappus 

 subulate. — Yellow. If. Aug. — Oct. Western Geo. 



21. H. puBEs'cENS, (L.) Stem erect, pubescent, hoary, nearly simple. 

 Leaves seirsilo, opposite, cordato-ovate, pubescent, Avith sciibrous margins. 

 Floicers at the extremities of the branches ; involucre with villous, near- 

 ly subulate scales; ray florets lanceolate, 14 — 16. Seed compressed; 

 pappus 2 subulate scales, ciliate. — Yellow. If. Aug. — Sept. Middle 

 Georgia. 2 — 3 feet. 



22. II. tenuifo'lius, (Ell.) Stem erect, glabrous. Leaves opposite, 

 on rather long petioles, ovate-lanceolate, somewhat tapering at the 

 brise, coarsely serrate, slightly scabrous on the upper surface, and 

 slightly pubescent beneath. Flowers few, terminal ; involucre as long 

 as the disk, with ciliate leaves ; ray florets about 10; pappus subulate. 

 — Yellow. If. Aug. — Oct. Western Georgia. 



23. II. traciielifo'lius, (L.) >S/fm scabrous, branching, Z^air*' ovate- 

 lanceolate, serrate, attenuate at the base, scabrous, tomentosc beneath, 

 whitish above. Flowers in terminal panicles ; involucre with subulate 

 ciliate leaves; ray florets 10 — 12 ; pappus subulate ; chaff hairy at the 

 summit. — Yellow. 2^. Sept. — Oct. Mountains. 3 — 4 feet. 



24. H. decapet'alus, (L.) Stem pubescent, scabrous, branched. 

 Leaves ovate, somewhat spatulate, serrate, scabrous above, pubescent 

 beui at li, upper ones alternate. Flowers in large panicles; involucre 

 with long ciliate leaves; ray florets 10 — 12, long; pappus subulate, 

 pubescent.— Yellow, if. Aug.— Oct. Middle Geo. 3— 4 feet. 



25. li. multiflo'rus, (L.) Stem scabrous. Leaves scabrous, the low- 

 er ones cordate, the upper ovate; involucre many-leaved, smooth; ray 

 florets numerous. — Yellow. If. July — Sept. Mountains. 2 — 3 feet. 



26. H. ALTis'siJius, (L.) Sre}n glabrous, purple. Leaves alternate, 

 ovate-lanceolate, serrate, scabrous, tapering toward the summit, on 

 khort fringed petioles; ray florets about 16; involucre with ciliate 

 lanceolate leaves; chaff green. — Yellow. If. July — Sept. Mount- 

 ains. 6 — 8 feet. 



27. H. TUBERo'sus, (L.) Stem erect, scabrous, branching. Leaves 

 ovate and cordate ovate, alternate, scabrous, serrate, the .lower ones 

 opposite; involucre with ciliate, linear-lanceolate scales; rays 12 — 15 ; 

 pappus 1 — 4 subulate scales or chaffy awns. Koots bearing tubers, 

 used as pickles. — From Brazil. Artichoke or Jerusalem Artichoke. 



Genus LL— HELIANTIIEL'LA. T. <fe G. 

 (Diminutive of llelianthus.) 



Heads many-flowered ; ray florets neutral ; those of the disk 

 perfect; scales of the involucre loose, somewhat foliaceous. 

 Ovary compressed, with the margins winged more or less, and 

 produced into a varying appendage. 



1. H. grandiflo'ra, (T. k G.) ^S^^-m pubescent, simple. Leaves lanoe- 

 linear, hispid ; ray florets about 20; chaff 3-tootljed. Achmia oval, 

 compressed. — 3 — 4 feet. East Florida. 



