Ordbb VO.— composites. 455 



toothed or incised, upper subolaaping ; scales very hairy, longer than the disk ; 

 disk corollas with subulate teeth ; receptacle fimbriliaie, with slender aiens.—Q) 

 La., Tex, and in, gardens. -St. branching. Hds. 1 to IJ' diam. Eays 10 to 12, 

 violet-purple, with yellow teeth. 



63. POLYP'TERIS, Nutt. (Gr. iroXvg, many, -nrepov, a wing ; from 

 the feather-like pappus.) Heads discoid ; flowers all perfect, tubular 

 and similar ; scales flat, scarious, in 2 or 3 series, appressed ; receptacle 

 naked; achenia 4-angled, slender at base; pappus of 6 to 12 mem- 

 branous, pinnately striate scales. — Lvs. scattered, lanceolate. Fls. 



^ 



cyanic. (Palafoxia, T. & G.) 



P. integrifdlia Nutt. Rough; st. corymbous above; lvs. linear-lanceolate, 

 entire ; outer scales loose, acuta, inner obtuse ; pappus of 8 to 10 acuminate 

 squamaa with fringed or plumed edges. — Barrens, S. W. Ga. and Mid. Fla. 

 Sts. 3 to 5f high, bearing the large, purplish heads in a level-topped corymb. 

 Aug. — Oct. 



64. HYMENOPAP'PUS, L'Her. (Gr. viUtJv, membrane, TraTrTrfOf, pap- 

 pus ; from the character.) Heads many-flowered ; flowers all perfect, 

 tubular; scales 6 to 12, in 2 series, oval, obtuse, membranaceous, 

 colored; receptacle small, naked ; anthers exserted ; achenia broad at 

 the summit, attenuate to the base ; pappus of many short, obtuse, 

 membranous scales in one series. — ® or U North American, villous 

 herbs. St. grooved and angled. Lvs. altern^e, pinnately divided. 



H. Bcabiosceus L'Her. Hoary-villus, or nearly glabrous ; lvs. pinnately or bi ■ 

 pinnately parted, segments linear or oblong, entire or sparingly toothed ; hds. 

 in simple corymbs ; scales obovate, 1 — 11, white, greenish at base, undulate on 

 the margin, longer than the disk ; cor. deeply lobed ; ach. pubescent. — ^111. to 

 !Pla. Stem 1 — 2f high, whitish with soft cotton when young, at length purplish 

 and glabrous. Segments 1 — 1^' by 1 — 2", rather acute. Hds. whitish, afcout 

 21-flowered. Apr., May. (South.) — Aug. 



65. HELE^NIllM, L. American Snbbzewort. (Named for the 

 celebrated Helen, who is said to have availed herself of its cosmetic 

 properties.) Involucre double, the outer of leafy, narrow scales, the 

 inner chaffy ; ray pistillate ; pappus of several 5-awned, chaffy leaves ; 

 receptacle globous, naked in the disk, and chaffy in the ray only ; ray 

 flowers half 3-cleft ; seed villous. — Lvs. alternate, decurrent. Eays 

 yellow. 



§ Disk globiilnr, its florets witli a S-toothed- corolla Nos. 1—5 



§ Disk obloiig, its floiets with a 4-toottied corolla No. 4 



1. H. autumnale L. Ia>s. lanceolate, serrate, smooth or slightly pubescent, de- 

 current ; fls. loosely corymbous. — X[ In damp places. St. 2 to 3f high, branching 

 strongly, winged by the decurrent lvs. Lvs. tapering to each end, or elliptic- 

 lanceolate, more or less deeply serrate. Fls. large, numerous, terminal, with 

 drooping rays, each ending in 3 obtuse teeth, and longer than the large, globous 

 disk. The plant is very bitter. Aug. 

 /?. canalioulXtum. Eaya concave, canaliculate or 3-furrowed. (H. canalicu- 

 latum Lam.) 



2 H. parviflorum Nutt. Los. lanceolate, siibmtire, smooth, scarcely decurrent ; 

 hds. soUta/ry, or in small, scattered clusta's. — Ga. (NuttaU.) Heads about half as 

 large as in No. 1. Disk globous, longer than the filiform scales. Rays flat. 

 Pappus scales awned, half as long as the corolla. Ach. smooth. 



3 H. tenuifdlmm Nutt. Smoothish; branches numerous, festigiate, very leafy ; 

 hs. linear or filiform, eniirej fascicled; scales subulate; disk globous. — Fields, 

 waysides, 6a. (Feay, Pond) to La. St. 1 to 2f high, naked and woody below, 



