450 Obdeb 10 COMPOSITE. 



hds. small, but larger than in No. 22. Character otherwise as in that species^— 

 AHeghanles of Ta. and Car. 

 2S H. longifoliua Ph. Very smooth, often clustered; las. chiefly opposite, long- 

 lance-Unear, acute, entire, obscurely S-veined, sessile, the radical somewhat serrate 

 and petioled ; scales ovate, acute, the outer with spreading tips ; rays 8 to 10, 

 short. — ^Western Ga. St. 4 to 7f high, smooth and dark purple. Hd. not larger 

 than in No. 22. — A rare species. 



55. HELIANTHEL'LA, Torr. & Gr. (Lat. diminutive of Helianthus.) 

 iBvolucre, flowers and pales as in Helianthus ; achenia compressed, 4- 

 angled, one or more of its angles slightly winged and produced into a 

 persistent, awn-like or chaffy appendage. — 21 Lvs. scattered. 



H. tenuifolia Torr. & Gr. Rough, slender; lvs. narrowly linear; scales lanee- 

 subulate, spreadmg, hairy; rays 10 to 12; pales 3-lobed; ach. 2-toothed at the 

 summit. Sand hills, Gadsden Co., Ma. (Chapman). 



56. ACTINOM'ERIS, Nutt. (Gr. uktiv, a ray, fiepog, a part; j)ar- 

 tially radiate.) Heads many-flowered, ray flowers 4 to 14, rarely 'O; 

 involucre scales foliaceous, subequal, in 1 to 3 series ; receptacle conical 

 or convex, chaffy ; achenia compressed, flat, obovate, mostly winged, 2 

 awned. — 2f Plants tall, with 3 veined, serrate lvs. Hds. corymbous. 

 Rays when present yellow 



* stem winged with the decun-ent, alternate leaves Nos. 1—8 



* Stem not at all winged, with mostly opposite leaves No. 4 



1 A. helianthoides Nutt. St. hirsute, winged except near the base ; lvs. alter- 

 nate, ovate-lanceolate, decurrent, acuminate, serrate, hirsute and scabrous ; co- 

 rymlD contracted ; rays 6 — 14, long, irregular; scales erect. — In barrens and prai- 

 ries. Western States. It is a rough plant, with the aspect of a Helianthus. Stem 

 2 — 4f high. Leaves 2 — 4' by 6 — 14", grayish. Rays 1' long. Fls. all yellow, 

 Jn., JL (Terbesina Mx.) 



-2 A. squarrdsa Nutt. St. tall, winged, branching above, somewhat pubescent ; 

 lvs. alternate, often opposite, oblong-lanceolate, elongated, tapering to each acute 

 or acuminate end, scabrous, decurrent ; hds. small ; scales spreadmg or refleced ; 

 rays 4 — 8; regular, short; receptacle very small. — Dry, alluvial soils, W. N. T. 

 and "W". States, common. An unsightly weed, 5 — lOf high. Leaves 6 — 14' by 

 1 — 3', sharply serrate, especially the lower. Rays J' long. Fls. all yellow. Aug. 

 — Oct. (Coreopsis alternifolia L.) 



•3 A. alba Torr. & Gr. St. narrowly winged, rarely wingless ; lvs. glabrous but 

 rough, narrowly lanceolate, acute at each end, finely serrate ; scales lance-linear, 

 few, in about 2 rows ; rays none ; ach. broadly winged, with 2 spreading awns ; 

 cor. white. — S. Oar., Ga. to La., common in moist, rieli soils. St. 4 to 6f high. 

 Lvs. 5 to 8' long. Hds. in small corymbs, globular. Aug. — Oct. (A. squarrosa, 

 /3. Nutt.) • 



4 A. uudicatilis Nutt. Rough, hairy ; st. wingless, naked and branched above ; 

 lvs. oilong, unequally serrate, acute, closely sessile, the upper bract-like ; hds. pani- 

 culate, eorymbed; scales pubescent, in 2 or 3 rows; rays 1 to 12, linear; ach. 

 broad-obovate, narrowly winged. — Ga. (Peay, Pond), Pla., Ala., in sandy soil 

 St. 2 to 3f high. Lvs. 2 to 3' long. Ach. 1" long. Awns erect. Fls. all yellow. 

 Rays 1 to IJ' long. Sept., Oct. 



57. COREOP'SIS, L. Tick-Seed. (Gr. Kopcg, a bug, 6^plg, appear- 

 ance ; from the concavo-convex, 2-horned achenia.) Heads many- 

 flowered, radiate, rays about 8, rarely ; involucre double, each 6 to 

 12-lGaved; receptacle chaffy ; achenia obcompressed, eraarginate, each 

 commonly "with a 2-toothed, upwardly hispid pappus, sometimes with 

 none. — Lvs. mostly opposite. Rays usually yellow ; disk fls. yellow or 

 dark purple. 



