Echinacea angustifolia

Echinacea angustifolia
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Tribe:	Heliantheae
Genus:	Echinacea
Species:	E. angustifolia
Binomial name
Echinacea angustifolia de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 554. 1836.

Echinacea angustifolia (Narrow-leaved purple coneflower, blacksamson echinacea) is a herbaceous plant species in Asteraceae. The plants grow 40 to 70 centimetres (16 to 28 in) tall with spindle-shaped taproots that are often branched. The stems and leaves are moderately to densely hairy.

E. angustifolia blooms late spring to mid summer. It is found growing in dry prairies and barrens with rocky to sandy-clay soils. There are two subspecies: E. a. angustifolia is native from Saskatchewan and Manitoba in the north to New Mexico, Texas, and Louisiana in the south, while E. a. strigosa has a more limited range in Kansas, Oklahoma, Texas, and Louisiana.

E. angustifolia is used as a fortifier of the immune system, mainly to prevent flu and minor respiratory diseases.^{[citation needed]}