450 ORDER 70. COMPOSITE. 



hds. small, but larger than in No. 22. Character otherwise as in that species.-*- 

 Alleghanies of Va, and Car. 



25 H. longifolius Ph. Very smooth, often clustered; IDS. chiefly opposite, long- 

 lance-linear, acute, entire, obscurely 3-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.) 

 Involucre, 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. 11 Lvs. scattered. 



H. tenuifolia Torr. & Gr. Rough, slender; Ivs. narrowly linear; scales lance- 

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

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



56. ACTINOM'ERIS, JSTutt. (Gr. ditriv, a ray, pepog, a part; par- 

 tially radiate.) Heads many-flowered, ray flowers 4 to 14, rarely 0; 

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

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

 awned. 2 Plants tall, with 3 veined, serrate Ivs. Hds. corymbous. 

 Rays when present yellow 



* Stem winged with the decurrcnt, alternate leaves Nos. 1 3 



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



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

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

 rymb 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. (Verbesina MX.) 



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

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

 or acuminate end, scabrous, decurrent ; hds. small ; scales spreading or reflexed ; 

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

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

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

 Oct. (Coreopsis alternifolia L.) 



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

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

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

 cor. white. S. Car., Ga. to La., common in moist, rich soils. St. 4 to 6f high. 

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

 /?. Nutfc) 



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

 Ivs. ollong, unequally serrate, acute, closely sessile, the upper bract-like ; hds. pani- 

 culate, corymbed; scales pubescent, in 2 or 3 rows; rays 7 to 12, linear; ach. 

 ,broad-obovate, narrowly winged. Ga. (Feay, Pond), Fla., Ala., in sandy soil. 

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

 ays 1 to l' long. Sept., Oct. 



,57. COREOP'SIS, L. TICK-SEED. (Gr. Kopi$, a bug, oyi?, appear- 

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

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

 l"2-leaved ; receptacle chaffy ; achenia obcompressed, emarginate, each 

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

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

 dark purple. 



