• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Seed Study - Echinacea angustifolia

Echinacea angustifolia - Purple Coneflower

Echinacea angustifolia - Purple Coneflower

NPS Photo

Species: Echinacea angustifolia
Common name: purple coneflower

Seedling Identification: Cotyledons are bean-like and smooth. The first true leaf emerges alone, is long, narrow, moderately to densely hairy and has an entire margin.


Echinacea angustifolia – purple coneflower
Average number of good seeds per gram bulk matter: 55
Average number of good seeds per gram cleaned: 346
Commercial estimates of seeds per gram: 254
Percent seed: 66
Percent live: n.m.
Collection dates: August 23, 25 and 30; September 1, 2, and 23
Collection effort: 107 grams in 4 person hours
Collection notes: Abundant, obvious and easy to collect
Cleaning notes: Cleaning it isn't easy, because seed is fairly persistent to the seed head which has sharp points on it. Bulk seed measurement was off stalks but with a lot of bracts. Clean seed was hard seed only.

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