Seed Study - Echinacea angustifolia
Species: Echinacea angustifolia
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.