Part 97 (1/2)

1. A. squarrsa, Nutt. Stem somewhat hairy, usually winged above (4--8 high); leaves alternate or the lower opposite, oblong or ovate-lanceolate, pointed at both ends; rays 2--8, irregular.--Rich soil, Penn. and W. New York to Iowa, and southward. Sept.

55. COREoPSIS, L. TICKSEED.

Heads many-flowered, radiate; rays mostly 8, neutral, rarely wanting.

Involucre double; each of about 8 scales, the outer rather foliaceous and somewhat spreading; the inner broader and appressed, nearly membranaceous. Receptacle flat, with membranaceous chaff deciduous with the fruit. Achenes flat, obcompressed (i.e., parallel with the scales of the involucre), often winged, not narrowed at the top, 2-toothed or 2-awned, or sometimes naked at the summit, the awns not barbed downwardly.--Herbs, generally with opposite leaves, and yellow or party-colored, rarely purple, rays. (Name from ?????, _a bug_, and ????, _resemblance_; from the form of the achene.)

-- 1. _Style-tips truncate or nearly so; outer involucre small and short; rays rose-color or yellow with brown base; pappus an obscure border or none._

1. C. rsea, Nutt. Perennial; stem branching, leafy, smooth (6--20'

high); leaves linear, entire; heads small, somewhat corymbed, on short peduncles; rays rose-color, 3-toothed; achenes oblong, wingless.--Sandy gra.s.sy swamps, Plymouth, Ma.s.s., to N. J., and southward; rare. Aug.

2. C. cardamineflia, Torr. & Gray. Annual, 6'--2 high; leaves 1--2-pinnately divided, the lobes oval to lanceolate or above linear; rays yellow with brown-purple base; achenes short, smooth or papillose, winged.--Kan. to La. and Tex.

3. C. tinctria, Nutt. Annual, glabrous, 2--3 high; leaves 1--2-pinnately divided, the lobes lanceolate to linear; achenes oblong, wingless; rays yellow with more or less of crimson-brown.--Minn. to Tex., etc.; common in cultivation.

-- 2. _Style-tips abruptly cuspidate, hispid; involucres nearly equal; achenes roundish, winged, incurved, often papillose and with a callus inside at base and apex; pappus 2 small teeth or none; ray mostly yellow and palmately lobed; perennials, with long-pedunculate heads; lower leaves petiolate._

4. C. lanceolata, L. Smooth or hairy (1--2 high), tufted, branched only at the base; leaves all entire (the lower rarely with a pair of small lateral lobes), lanceolate, the lowest oblanceolate or spatulate; outer scales ovate-lanceolate.--Rich or damp soil, Mich. and Ill. to Va., and southward. July. Also cultivated in gardens. Heads showy; rays 1'

long.--Var. ANGUSTIFLIA, Torr. & Gray, is a low form with crowded narrow leaves and elongated peduncles.--Var. VILLSA, Michx., is hirsute below, the leaves rather broad.

5. C. grandiflra, Nutt. Mostly glabrous; lower leaves lanceolate and spatulate, entire, the _upper 3--5-parted with lanceolate to linear and sometimes 2--3-parted lobes_; heads as in the last or larger.--S. Mo. to Tex. and Ga.

6. C. p.u.b.escens, Ell. More leafy, 1--4 high, p.u.b.escent or nearly glabrous; leaves thickish, oblong or the lower oval-obovate and the upper oblong-lanceolate, entire or with 2--4 small lateral lobes; heads usually smaller.--Va. to S. Ill., Mo., and southward.

7. C. auriculata, Linn. p.u.b.escent or glabrous; stems 1--4 high, branching, sometimes with runners; leaves mostly petioled, the upper oblong or oval-lanceolate, entire; the lower oval or roundish, some of them variously 3--5-lobed or divided; outer scales oblong-linear or lanceolate; achenes narrowly winged and strongly involute.--Rich woods and banks, Va. to Ill., and southward. June--Sept.

-- 3. _Style-tips cuspidate; achenes oblong, nearly straight, without callus, the wing narrow or none; rays yellow, mostly entire or slightly toothed._

[*] _Outer scales narrow, about the length of the inner, all more or less united at base; rays mostly entire, acute; pappus 2-toothed or none; leaves opposite, sessile, mostly 3-divided, appearing as if whorled; perennial, 1--3 high._

[+] _Leaves 3-cleft, but not to the base._

8. C. palmata, Nutt. Nearly smooth, simple; leaves broadly wedge-shaped, rigid; the lobes broadly linear, entire, or the middle one 3-lobed.--Prairies, Mich. to Minn., and southwestward. July.

[+][+] _Leaves divided to the base, uppermost and lowest sometimes simple._

9. C. seniflia, Michx. Plant minutely soft-p.u.b.escent; leaves each divided into 3 sessile _ovate-lanceolate entire leaflets_, therefore appearing like 6 in a whorl.--Sandy woods, Va. and southward. July.

Var. stellata, Torr. & Gray. Glabrous, and the leaves narrower.--Va., Ky., and southward.

10. C. delphiniflia, Lam. Glabrous or nearly so; leaves divided into 3 sessile _leaflets_ which are 2--5-_parted, their divisions lance-linear_ (1--3” broad), rather rigid; disk brownish.--Pine woods, Va. and southward. July.

11. C. verticillata, L. Glabrous; leaves divided into 3 sessile _leaflets_ which are 1--2-_pinnately parted into narrowly linear or filiform divisions_.--Damp soil, from Ont. and Mich. to Md., Ark., and southward. Cultivated in old gardens, but not showy. July--Sept.

[*][*] _Outer scales narrow, shorter, all united at base; rays entire, obtuse; pappus none; leaves petiolate, pinnately 3--5-divided; perennial._

12. C. tripteris, L. (TALL COREOPSIS.) Smooth; stem simple (4--9 high), corymbed at the top; leaflets lanceolate, acute, entire.--Penn. to Wisc., Iowa, and southward. Aug.--Sept.--Heads exhaling the odor of anise when bruised; disk turning brownish.

[*][*][*] _Scales mostly distinct, the outer leafy, reflexed or spreading; achenes flat, obovate or cuneate-oblong, 1-nerved on each face, 2-toothed or 2-awned (rarely 4-awned); leaves petiolate, usually pinnately 3--7-divided, the lobes serrate; annuals (or biennial), branching. Approaching_ Bidens.