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eastern purple coneflower, purple coneflower

Habit Plants 50–120 cm (roots fibrous).
Herbage

usually hairy (hairs spreading to ascending, to 2 mm), sometimes glabrous.

Stems

usually brownish green.

Basal leaves

petioles 0–17(–25) cm;

blades 3- or 5-nerved, ovate to narrowly lanceolate, 5–30 × (1–)5–12 cm, bases usually rounded to cordate, margins usually serrate to dentate, rarely entire.

Peduncles

8–25 cm.

Receptacles

paleae 9–15 mm, tips red-orange, straight or slightly curved, sharp-pointed.

Ray corollas

pink to purple, laminae spreading to recurved, 30–80 × 7–19 mm, sparsely hairy abaxially.

Disc corollas

4.5–5.7 mm, lobes greenish to pink or purple.

Phyllaries

linear to lanceolate, 8–17 × 1–8 mm.

Cypselae

off-white, 3.5–5 mm, usually glabrous (ray cypselae sometimes hairy on angles);

pappi ca. 1.2 mm (teeth equal).

Discs

conic, 14–45 × 20–40 mm.

2n

= 22.

Echinacea purpurea

Phenology Flowering late spring–summer.
Habitat Rocky, open woods, thickets, prairies, especially near waterways
Elevation 10–400+ m (0–1300+ ft)
Distribution
from FNA
AL; AR; FL; GA; IA; IL; IN; KS; KY; LA; MO; MS; NC; OH; OK; TN; TX; WI; ON
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[BONAP county map]
Discussion

Echinacea purpurea is introduced in Ontario. It and cultivars derived from it are extensively grown ornamentals in gardens, wildflower roadside plantings, and prairie restoration sites. Because of its popularity as an herbal remedy, it is also grown commercially. As a result of such activities, naturalized and persisting populations may extend the natural range of E. purpurea. Selections used for such plantings may differ from native forms.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 21, p. 91.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Echinacea
Sibling taxa
E. angustifolia, E. atrorubens, E. laevigata, E. pallida, E. paradoxa, E. sanguinea, E. simulata, E. tennesseensis
Synonyms Rudbeckia purpurea
Name authority (Linnaeus) Moench: Methodus, 591. (1794)
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