E-Flora BC: Electronic Atlas of the Flora of British Columbia

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  Email the photographer   (Photo ID #27564)

E-Flora BC Static Map
Distribution of Coreopsis tinctoria var. atkinsoniana
Click here to view our interactive map and legend
Details about map content are available here
Click on the map dots to view record details.


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

Click on the image below to view an expanded illustration for this species.

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.

Source: The Illustrated Flora of British Columbia

Habitat / Range

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

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Coreopsis atkinsoniana Douglas ex Lindl.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References