Echinacea atrorubens |
|
---|---|
Topeka purple coneflower, yellowsampson |
|
Habit | Plants to 90 cm (roots elongate-turbinate, ± branched). |
Herbage | usually hairy (hairs appressed to ascending, spreading on adaxial leaf faces, to 1.2 mm), rarely glabrous. |
Stems | light green to tan. |
Basal leaves | petioles 0–12(–20) cm; blades (1-), 3-, or 5-nerved, usually linear or lanceolate, rarely ovate, 5–30 × 0.5–3 cm, bases attenuate, margins usually entire. |
Peduncles | 20–50 cm. |
Receptacles | paleae 9–15 mm, tips red to orange-tipped, usually straight, sharp-pointed. |
Ray corollas | purple, rarely pink or white, laminae reflexed, 19–35 × 2–7 mm, glabrous or sparsely hairy abaxially. |
Disc corollas | 4.5–5.5 mm, lobes greenish to pink or purple. |
Phyllaries | linear to lanceolate, 6–15 × 1–3 mm. |
Cypselae | tan, 4–5 mm, faces finely tuberculate, glabrous; pappi to 1.2 mm (major teeth 3–4). |
Discs | ovoid to conic, 25–35 × 20–40 mm. |
2n | = 11. |
Echinacea atrorubens |
|
Phenology | Flowering mostly late spring. |
Habitat | Dry, limestone or sandstone outcrops, prairies |
Elevation | 50–500 m (200–1600 ft) |
Distribution |
KS; OK; TX
|
Source | FNA vol. 21. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Echinacea |
Sibling taxa | |
Synonyms | Rudbeckia atrorubens |
Name authority | (Nuttall) Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 354. (1840) |
Web links |