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

Tanacetum bipinnatum subsp. huronense (L.) Sch. Bip. (Nutt.) Breitung
dune tansy (Lake Huron tansy)
Asteraceae (Aster family)

Introduction to Vascular Plants
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Distribution of Tanacetum bipinnatum subsp. huronense
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Species Information

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General:
Perennial herb from a branched creeping rhizome; stems stout, erect or ascending, several, branched, moderately or more usually long-hairy with flattened hairs, sometimes reddish, 20-60 cm tall.
Leaves:
Basal leaves well-developed and larger than the stem leaves or reduced or lacking, rather thick with an expanded, clasping base, 2-3 times pinnately cut, the ultimate segments with indistinctly winged axis of the inflorescence and blunt or rounded tips; stem leaves similar, smaller, alternate, 5-20 cm long, 2-5 cm wide.
Flowers:
Heads with ray and disk flowers, several, terminal on the branches in a short, flat-topped inflorescence; involucres 4-6 mm tall; involucral bracts lanceolate to oblong, firm except for the papery margins and tip; ray flowers yellow, few; disk flowers yellow, 5-toothed, glandular.
Fruits:
Achenes squared off at the top, 5-angled, ribbed, glandular-dotted; pappus a minute, somewhat lobed crown.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic sand dunes in the lowland zone; infrequent in coastal BC; S to N CA.

Source: The Illustrated Flora of British Columbia

Climate

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

Chrysanthemum bipinnatum subsp. huronense (Nutt.) HultΘn
Tanacetum douglasii
Tanacetum huronense Nutt.
Tanacetum huronense subsp. huronense
Tanacetum huronense var. bifarium Fern.
Tanacetum huronense var. floccosum Raup
Tanacetum huronense var. johannense Fern.
Tanacetum huronense var. terrae-novae Fern.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References