Echinacea pallida var. angustifolia (DC.) Cronquist
Echinacea angustifolia var. strigosa McGregor
Echinacea angustifolia
Echinacea angustifolia, the narrow-leaved purple coneflower or blacksamson echinacea,[2] is a species of flowering plant in the family Asteraceae. It is native to North America, where it is widespread across much of the Great Plains of central Canada and the central United States, with additional populations in surrounding regions.[3]
E. angustifolia is a perennial herb with spindle-shaped taproots that are often branched. The stems and leaves are moderately to densely hairy. The plant produces flower heads each at the end of a long peduncle. Each flower head contains 8–21 pink or purple ray florets plus 80–250 orange disc florets.[2]
Echinacea angustifolia blooms in late spring to mid-summer. Two subspecies are used by some botanists, but are regarded as illegitimate by Flora of North America (FNA) and Plants of the World Online (POWO):[4][5][6][1]
Echinacea angustifolia subsp. angustifolia is native to central Canada and the central United States from Saskatchewan and Manitoba in the north to New Mexico, Texas, and Louisiana in the south.[7]
Echinacea angustifolia subsp. strigosa has a more limited range in Kansas, Oklahoma, Texas, and Louisiana.[8]
^ abPOWO (2023). "Echinacea angustifolia DC". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 27 May 2023.
^ abFlora of North America, Narrow-leaved purple coneflower, blacksamson echinacea, Echinacea angustifolia de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 554. 1836.
^Biota of North America Program 2014 county distribution map
^McGregor, Ronald Leighton 1968. Transactions of the Kansas Academy of Science 70(3): 368–369
^Tropicos, Echinacea angustifolia var. strigosa McGregor
^Cite error: The named reference FNA was invoked but never defined (see the help page).
^USDA, NRCS (2023). "Echinacea angustifolia var. angustifolia". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 27 May 2023.
^USDA, NRCS (2023). "Echinacea angustifolia var. strigosa". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 27 May 2023.
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on species can drive synchrony. Flowering in the prairie plant Echinaceaangustifolia is more synchronized after fire, once a common feature of the tallgrass...
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Colorado and Utah Formerly included Echinacea atrorubens (as R. atrorubens) Echinacea pallida (as R. pallida) Echinacea purpurea (as R. purpurea) Helianthus...
as Echinaceaangustifolia. Through empirical studies, she examines evolutionary change in its ecological context. By studying Echinaceaangustifolia, she...
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