Echinacea atrorubens

(Nuttall) Nuttall

Trans. Amer. Philos. Soc., n. s. 7: 354. 1840.

Common names: Topeka purple coneflower
Basionym: Rudbeckia atrorubens Nuttall J. Acad. Nat. Sci. Philadelphia 7: 80. 1834
Treatment appears in FNA Volume 21. Mentioned on page 89.
Revision as of 19:35, 16 December 2019 by FNA>Volume Importer

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. Phyllaries linear to lanceolate, 6–15 × 1–3 mm. 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. Discs ovoid to conic, 25–35 × 20–40 mm. Disc corollas 4.5–5.5 mm, lobes greenish to pink or purple. Cypselae tan, 4–5 mm, faces finely tuberculate, glabrous; pappi to 1.2 mm (major teeth 3–4). 2n = 11.


Phenology: Flowering mostly late spring.
Habitat: Dry, limestone or sandstone outcrops, prairies
Elevation: 50–500 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Echinacea atrorubens"
Lowell E. Urbatsch +, Kurt M. Neubig +  and Patricia B. Cox +
(Nuttall) Nuttall +
Rudbeckia atrorubens +
Topeka purple coneflower +
Kans. +, Okla. +  and Tex. +
50–500 m +
Dry, limestone or sandstone outcrops, prairies +
Flowering mostly late spring. +
Trans. Amer. Philos. Soc., n. s. +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Echinacea atrorubens +
Echinacea +
species +