• 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.

Did You Know?

Porcupine in tree

Porcupine babies are called porcupettes. When they are born they have 15,000 quills. Porcupettes are born in the spring and, lucky for mom, the quills are soft. They can climb trees within an hour of birth. More...