344 LXXV. COMPOSIT:^. CoRECPais. 



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. LEPTOPCDA. Nutt. 



Gt. Xctttoj, slender, irovf, foot ; allutJing to the elongated peduncle. 



Heads many-flowered ; .rays neutral, cuneate, 3 — 4-cleft ; dis'i 5 ; 

 scales spreading, numerous, attenuate ; receptacle conical ; chaf y 

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

 the habit of Hdeniuvi. 



L. BRACHTPODA. T. & G. (Helehium quadridentatum. Hook.) False 

 Hclenmin. — 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; di^k brownish-purpl; . — A 

 plant separated from ilelenium only on account of its sterile rays. It gro /s in 

 damp soil, from the southern counties of 111. to Tex. and Southern St;'t!^s. Stem 

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

 deeply and irreg'ilarly toothed, 7 — 9" by 4 — 5". 



Sectiou 'A, Sleads discoid and radiate in tlie same genus. 



44. ACTINOMERIS. Nutt. 

 Gr. aKTiv., a ray, JJUIP'S, apart; partially radiate. 



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

 foliaceous, subequal, in 1 — 3 series; receptacle conical or coi vox, 

 ehaflfy ; achenia compressed, flat, obovate, 2-awned. — % Plants talL 

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



1. A. HELiANTHoiDES. Nutt. (Vcrbesina. Michx.) 



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 Helianihus. Stem 

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

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



2. A. sauARRosA. Nutt. (Coreopsis alternifolia. Linn.) 



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

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

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



ing or reflexed ; rays 4 — 8 : receptacle very small Eh-y, alluvial soils western- 



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

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

 Aug.— Oct. 



45. COREOPSIS. 



Gt. Kopti, a bug, oipts, appearance ; from the concavo-convex, 2-homed achenia. 



Involucre double, each 6 — 10-leaved; receptacle chafiy ; acl-enia 

 compressed, emarginate, each commonly with a 2-toothed pappi.>s. — 

 I^vs. mostly opposite. Rays rarely loajiting. 



§ Rays 0. 



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



Glabrous, much branched, erect; Its. ternate, long-petiolate; Ifls. ovate- 

 lanceclate, strongly dentate, petiolulate ; hds. loosely paniculate, on "slend'T pe- 

 duncles; outer irivoiucreZ--b linear-spalulate, leaf-like bracis, /?me/- 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. Tertuinal leaflets 3—5' by i—W, lateral much small- 

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



