ORDER 70. COMPOSITE. 455 



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

 disk corollas with subulate teeth ; receptacle finibriUate, with slender awns. (1) 

 La., Tex, and in gardens. St. branching. Hds. 1 to !' diam. Rays 10 to 12, 

 violet-purple, with yellow teeth. 



63. POLYPTERIS, Nutt. (Gr. TroM$, many, Trrepov, 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. FJs. 

 cyanic. (Palafoxia, T. & G.) 



P. integrifolia Nutt Rough; st corymbous above; Ivs. linear-lanceolate, 

 entire ; outer scales loose, acut3, inner obtuse ; pappus of 8 to 10 acuminate 

 squamae 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. OcL 



64. HYMENOPAP'PUS, L'Her. (Gr. vp/v, membrane, irdirrrvo^ 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 scries. (g) or U North American, villous 

 herbs. St. grooved and angled. Lvs. alternate, pinnately divided. 



H. scabiosceus L'Her. Hoary-villus, or nearly glabrous ; Ivs. pinnately or bi 

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

 in simple corymbs; scales obovate, *7 11, white, greenish at base, undulate on 

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

 Fla. Stern 1 2f high, whitish with soft cotton when young, at length purplish 

 and glabrous. Segments 1 !' by 1 2", rather acute. Hds. whitish, about 

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



65. HELE r NIUM, L. AMERICAN SNEEZEWORT. (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 five, one-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. Rays 

 yellow. 



Disk globular, its florets with a 5-toothcd coro'ila. No?, t 



Disk oblong, its florets with a 4- toothed corolla No. 4 



1 H. autumnale L. Lvs. lanceolate, serrate, smooth or slightly pubescent, de- 

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

 strongly, winged by the decurrent Ivs. 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, globoua 

 disk. The plant is very bitter. Aug. 



fl. CANALICDLATUM. Rays concave, canaliculate or 3-furrowed. (H. canalicu- 

 latum Lam.) 



2 H. parviflorum NutL Lvs. lanceolate, subentire, smooth, scarcely decurrent ; 

 hds. solitary, or in small, scattered dusters. Ga. (Nuttall.) 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. temiifolium Nutt. Smoothlsh; bran ches numerous, fastigiate, very leafy; 

 Ivs. linear or filiform, entire, fascicled; scales subulate; disk globous. Fields, 

 waysides, Ga. (Feay, Pond) to La. SL 1 to 2f high, naked and woody below, 



