The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

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
from FNA
KS; OK; TX
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 21.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Echinacea
Sibling taxa
E. angustifolia, E. laevigata, E. pallida, E. paradoxa, E. purpurea, E. sanguinea, E. simulata, E. tennesseensis
Synonyms Rudbeckia atrorubens
Name authority (Nuttall) Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 354. (1840)
Web links