344 LXXV. COMPOSITE. COREOPSIS. 



suckers and by cuttings. Although they grow in any soil, yet it is better to 

 give them a rich loam, and water them with liquid manure. 



43. LEPTOPODA. Nutt. 



Gr. \eirros, slender, TTOVS , foot ; alluding to the elongated peduncle. 



Heads many-flowered ; rays neutral, cuneate, 3 4-cleft ; disk ; 

 scales spreading, numerous, attenuate ; receptacle conical ; chaff ; 

 pappus of 6 10 fringed squamae. % North, American herbs, with 

 the habit of Helenium. 



L. BRACHYPODA. T. & G. (Helenium quadridentatum. Hook.} False 

 Helenium. St. leafy, corymbose at summit; Ivs. decurrent, lanceolate, 

 subentire, the lower toothed, obtuse ; hds. on short peduncles ; scales lance-line- 

 ar ; about half as long as the 8 12 drooping rays ; disk brownish-purple. A 

 plant separated from Helenium only on account of its sterile rays. It grows in 

 damp soil, from the southern counties of 111. to Tex. and Southern States. Stem 

 about 2f high. Heads several or numerous. Rays broadest at summit, rather 

 deeply and irregularly toothed, 7 9" by 4 5". 



Section 2> Heads discoid and radiate in the same genus. 



44. ACTINOMfiRIS. Nutt. 



Crr. otKTtv, a ray, pripig, apart; partially radiate. 



Heads many-flowered, ray flowers 4 14, rarely ; involucre scales 

 foliaceous, subequal, in 1 3 series ; receptacle conical or convex, 

 chaffy ; achenia compressed', flat, obovate, 2-awned. % Plants tall. 

 St. winged with the decurrent leaves. Hds. corymbose, yellow. 



1. A. HELIANTHOIDES. Nutt. (Verbesina. MickxJ) 



St. hirsute, winged except near the base ; Ivs. alternate, ovate-lanceolate, 

 decurrent, acuminate, serrate, hirsute and scabrous ; corymb contracted ; rays 

 6 14, long and narrow ; scales erect. Rather common in barrens and prairies, 

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

 conspicuously winged with the decurrent leaves, 2 4f high. Leaves 2 4' by 

 6 14", grayish. Rays often irregular, 1' long. Jn. Jl. 



2. A. SQUARROSA. Nutt. (Coreopsis alternifolia. Linn.} 



St. tall, winged, branching above, somewhat pubescent; Ivs. alternate, 

 often opposite, oblong-lanceolate, elongated, tapering to each acute or acumi- 

 nate end, scabrous, decurrent on the petiole and stem ; hds. small ; scales spread- 

 ing or reflexed ; rays 4 8 : receptacle very small. Dry, alluvial soils western 

 N. Y., and Western States ! common. It is a tall, unsightly weed, 5 lOfhigh. 

 Leaves 6 14' by 1 3', sharply serrate, especially the lower. Rays ' long. 

 Aug. Oct. 



45. COREOPSIS. 



Gr. Kopis, a bug, oipis, appearance; from the concavo-convex, 2-horned achenia. 



Involucre double, each 6 10-leaved; receptacle chaffy; achenia 

 compressed, emarginate, each commonly with a 2-toothed pappus. 

 Lvs. mostly opposite. Rays rarely wanting. 



Rays 0: 



1. C. DISCOIDEA. Torr. & Gray. Rayless Tick-seed. 



Glabrous, much branched, erect ; Ivs. ternate, long-petiolate ; Ifts. ovate- 

 lanceolate, strongly dentate, petiolulate ; hds. loosely paniculate, on slenderj3e- 

 duncles ; outer involucre 3 5 linear-spatulate, leaf-like bracts, inner of many 

 linear, appressed scales ; ach. linear-oblong, tapering below, twice longer than 

 the 2 erect awns which are hispid upwards ! Ohio, Sullivant ! to La. Stem 

 and branches purplish. Terminal leaflets 35' by li', lateral much small- 

 er. Heads small (i' diam.), about 30-flowered. Jl. Sept. 



