coMPOdiT.*:. (composite family.) 259 



§ 3. Corolla of the ray and disk yellow or partly brown : branc/its of the style tipped 

 with a pointed or acute ujipendaiie. 



* Achenia nearly orbicular, broadly wiityed, incur vtd, furuishtd with a callous tubercle 



on the inside, at the top and bollum, crowned with 2 sntail chaj'-lilce denticulate 

 teeth: outer involucrt about the Iniyih of the inner: rays la ry e, coarsely Z-b- 

 toothed: liaves opposite or the uppermost alternate: lieuds oniony naked ptdun- 

 clcs : root in our wild sjttcits perennial. 



2. C. auriculata, LUm. rubesceut or ylabrous; stems \°-4° high, 

 brauLliiuy, .soiuctinics witli runners; leaves mostly ]>etioled, tite up/ier oblong or oval- 

 lunctolute, entire ; the lower oval or roundish, some if them variously 3 - ^-lobid or 

 divided; scales of the outer involucre oblong-linear or lanceolate. — Rich woods 

 and banks, Virginia to Illinois and southward. June -Sept. 



3. C. laneeolkta, L. Smooth or hairy ( 1° - 2° higli) ; stems short, tufted, 

 branched only at the base; leaves idl entire (or the lower rarely with a pair of 

 small fliteral lobes), lanceolate, sessile, tlie. lowest obianceolate or spalulate, tapering 

 into petioles; scales of the outer involucre ovate-lanceolate. — Kich or damp 

 soil, Michigan and Illinois to Virginia, and southward. July. Also cultivated 

 in gardens. — Heads showy : rays 1' long. 



C. TixcTOKiA, Nutt., a native of the plains beyond the Mississippi, with 



the rays yellow above, and brown-purple towards the base, a common garden 



biennial or annual, is becoming spontaneous in a few places. 



« « Achenia oblong, narrowly ivinyed, minutely or obscurely 2-toothed at the summit: 



scales of the outer involucre narrow, about llw, length of the inner, all more or less 



united at the base : 7uys mostly entire and acute : leaves op/iosite, sessile, mostly 3- 



divided, then fore appearing as ifwhorkd: perennial (l°-3° high). 



4. C. senifdlia, Michx. Leaves each divided into 3 sessile oca/e-ZaHcco/o/e 

 entire leafiels, therefore appearing like 6 in a whorl : plant minutely soft-pubes- 

 cent. — Sandy woods, Virginia and southward. July. 



Var. stellata, Torr. &, Gr. Glabrous, and the leaves narrower. (C. stel- 

 lata, Xntt.) — \'irginia, Kentucky, and southward. 



5. C. delphiuif61ia, Lam. Glabrous or nearly so ; leaves divided into 

 3 sessile laijkts which are 2-a-parted, their divisions lance-linear (l"-3" brojwl), 

 rather rigid ; disk brownish. — Pine woods, Virginia and southward. July. 



6. C. verticill^ta, L. Glabrous ; leaves divided into 3 sessile leaflets 

 which arc I -'2-j>innately /xtrted into narrowly linear orjiliform divisions. — Damp 

 soil, from Maryland and Michigan southward. Also cultivated in old gardens, 

 but not sliowy. July -Sept. 



7. C. palmata, Xutt. Nearly smooth, simple; /<<nv.s broadly i«(/(/r-s/«»/j«/, 

 deeply 3-<le/), rigid ; the lobes broadly linear, entire, or the middle one 3-lobod. — 

 Trairies, Michigan to Wisconsin, and southwestward. July. 



* * * Achenia elliptical, narrowly winged, the narrowly notched summit of the wing 



minutely lacerate-toulhed : scales of the outer inrvlucre fJiaceoiis, much smalU r than 

 the inner, all united at the base: rays obtuse, entire: leaves o]i/iosite, pilioled, 3- 

 5-dividid: prrenniaJ. 



8. C. tripteris, L. (Tall Coreopsis.) Smooth; stem simple (40 - 9" 

 high), corymbed at the top; leadets luueeolate, acute, emire. (Chryswslemuia, 



