Coreopsis tinctoria var. atkinsoniana Nutt. (Douglas ex Lindl.) H.M. Parker ex E.B. Sm.
Atkinson's coreopsis (Atkinson's tickseed)
Asteraceae (Aster family)

Introduction to Vascular Plants


© Frank Lomer     (Photo ID #27564)


E-Flora BC Static Map

Distribution of Coreopsis tinctoria var. atkinsoniana
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In BC, we presently recognize the varieties of this species, although Flora North America does not. Var. atkinsoniana is a rare native in BC and ranges south to the northwestern states, while var. tinctoria is native to eastern North America and is often grown in gardens and occasionally escapes, but it does not persist in BC.

Note Author: Frank Lomer, Honourary Research Associate, University of British Columbia Herbarium.

Species Information

Annual or biennial herb from a fibrous root; stems erect, glabrous, branched, 0.3-1.2 m tall.
Lower stem leaves opposite, pinnately cut or bipinnately cut, the ultimate segments linear or linear-elliptic, 5-16 cm long, including the stalk; the upper leaves pinnately divided into 3-5 linear segments or entire.
Heads with ray and disk flowers, several to numerous on long, slender stalks at the end of the branches; involucres 6-10 mm tall; involucral bracts markedly different, the inner 6-8 mm long, egg-shaped, brown with yellow margins, the outer reduced, 7-8, narrowly triangular, obtuse, 2-3 mm long; ray flowers orange-yellow, often with a purplish-brown basal spot, about 8, 1-2 cm long; disk flowers purplish-brown; receptacular bracts linear-oblong, orange-red.
Achenes black, 2-3 mm long, margins narrowly-winged; pappus lacking or of 2 small teeth.

SourceThe Illustrated Flora of British Columbia


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Habitat and Range

Moist river banks in the steppe zone; rare in extreme SC BC; S to WA and N OR.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Coreopsis atkinsoniana Douglas ex Lindl.