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

Rudbeckia laciniata var. ampla L. (A. Nelson) Cronquist
tall coneflower (cutleaf coneflower)
Asteraceae (Aster family)

Introduction to Vascular Plants
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Distribution of Rudbeckia laciniata var. ampla
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Species Information

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Perennial herb from a coarse woody stem-base; stems erect, solitary, simple or few-branched above, glabrous, often glaucous, 0.3-2 m tall.
Basal leaves lacking; stem leaves soon deciduous near the bases; middle leaves broadly triangular in outline, coarsely toothed or cleft, stalked, some or most of them pinnately cut, usually glabrous, sometimes hairy, especially beneath, 4-8 cm long, 4-8 cm wide, upper leaves reduced.
Heads with ray and disk flowers, solitary at the ends of branches; disks hemispheric or elongate, yellow or greyish, 10-20 mm wide; involucral bracts broadly oblong, abruptly sharp-pointed, 8-12 mm long, spreading when mature, glabrous; ray flowers yellow, 6-16, drooping, 2-4 cm long; disk flowers yellow or greyish; receptacular bracts blunt, white-hairy near the tip.
Achenes oblong, glabrous, 1.6-1.8 mm long; pappus a short crown.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist Typha marshes in the lowland zone; rare in SW BC, known only from Lion Island in the lower Fraser River; introduced from the Rocky Mountains and C U.S.

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

Rudbeckia ampla A. Nels.
Rudbeckia laciniata subsp. ampla (A. Nels.) W.A. Weber

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References