Coreopsis. LXXV. COMPOSITE. 345 



^ ^ Rays and disk yellow. 

 2. C. TRicHOSPERMA. Miclix. Tick-sccd Sunjlowcr. 



St. glabrous, square, dichotomous ; /r.s. pinnatcly 5 — 7-parted, briefly pe- 

 tiolate, segMi. lanceolaie, incised or serrate; scales oi the outer invol. ciliate, 

 linear, long as the inner; ra/AS entire, large ; rt/-A. narnnv-cuneatc, 2-awned. — 

 (J) in wet grounds, N. Y., Mass. to Car. A smooth, branching plant, 1 — i3thigh, 

 with a panicle of large, showy, yellow heads. Branches and leaves mostly op- 

 posite. Leaves thin, the upper S-cleft, subsessile. Leaflets narrow, tapering 

 to a long point, with a lew unequal, remote serratures. Achenia i' long, 

 crowned with stout, hispid awns. Jl. Aug. 



3. C. ARisTosA. Michx. 



Sparingly pubescent; /i'5. pinnately 5 — 9-parted, segments lance-linear, 

 incisely serrate or pinnatifid; h<Is. small, with conspicuous rays ; outer invol. of 

 10 — 12 linear, green scales, about as long as the inner, villous at base ; awns 

 about as long as the achenium. — Low woods, Western States ! Stem obtusely 

 4-angled, 2 — 3f high. Leaves thin, 4 — 6' long, petioles i — 1', Rays 8, orange- 

 yellow, expanding 1^'. 



0. (C. involucrata. Nutt. ?) Scaks of the outer involucre about 13, a third 

 longer than those of the inner. — la. ! 



4. C. TRiPTERis. (Chrysosterama. Less.) 



Glabrous; st. simple, "tall, corymbose at summit; Ivs. coriaceous, opposite, 

 petiolate, 3 — 5-divided, divisions linear-lanceolate, entire, acute ; hds. small, on 

 short peduncles. — A tall, smooth, elegant species, in dry soils. Southern and 

 Western States, common in la. ! Stem 4 — 8f high, slender, terete. Divisions 

 of the leaves 3 — 5' by | — \^'. Rays spreading, ^' long. Outer scales linear, 

 obtuse, spreading, as many as the inner. Jl. — Oct. 



5. C. VERTiciLLATA. Whovl-leaved Coreopsis. 



Glabrous, branched; Ivs. 3-divided, closely sessile, divisions pinnately 

 parted, segments linear, obtuse ; rays acute or (in cultivation) obtuse and 2 or 

 3-toothed ; ach. obovate, slightly 2-toothed. — 7]. Moist places, Md. and Western 

 States! Stem 1 — 3fhigh. Leaflets apparently verticiilate in 6s. Heads with 

 bright yellow rays, near I' long. Outer scales oblong-linear, obtuse, united at 

 base. June — Aug. 



6. C. PALMATA. Nutt. (Calliopsis. Spreng.) 



Nearly smooth ; st. branched, angled and striate, very leafy to the sum- 

 mit ; Ivs. sessile, deeply 3-cleft, rigid, lobes linear, acutish, entire or again cleft; 

 raijs obovate-oblong ; ach. linear-elliptic, incurved. — Dry prairies, W. States ! 

 Stem 1 — 2f high, sometimes much branched. Leaves 1 — 2^' long, some of 

 them undivided, lobes 2—4" wide. Heads 1 or several, with yellow rajrs. 

 Outer scales linear-oblong, obtuse. Jn. Jl. 



7. C. LANCEor.ATA. Lauce-lcaved Coreopsis. 



St. ascending, often branched below ; lower Ivs. oblanceolate, petiolate, the 

 1/^er lanceolate, sessile, all entire, with scabrous margins; hds. solitary, on 

 very long, naked peduncles; rays 4— 5-toothed at apex ; ach. suborbicular, with 

 2 small teeth. — % Native of the Southern States ! Heads showy. Rays about 

 8, 1' by i'. Jn.— Aug. t 



§ ^ ^ Rays or disk purple. 



8. C. DRUMMONDii. T. & G. CCalliopsis. Don.) Drummond^s Coreopsis. — 

 Pubescent; Ivs. pinnately divided, sometimes simple, segments (or leaves) 

 oval, entire; scales lanceolate-acuminate; rays unequally 5-toothed, twice longer 

 than the involucre; a-ch. obovate, incurved, scarcely toothed. — (J) From Texas. 

 Stems 10 — 20' high. Rays large, yellow, with a purple spot at base, -f 



/?. atrosanguinea, a garden variety, wath dark orange flowers. 



9. C. TiNCTORiA. Dyer^s Coreopsis. — Lvs. attenuate, radical ones subbipinnate ; 

 Ifts. oval, entire, smooth; cauline subpinnate, Ifts. linear; rays two-colored ; ach. 

 naked. — A handsome border annual, native of the Upper Missouri. Stem 1 — 3f 

 high, with light, smooth foliage. Heads with yellow rays, beautifully colored 

 with purple at their base. Flowering all summer, f 



