• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Seed Study - Erysimum asperum

Erysimum asperum - Western Wallflower

Erysimum asperum - Western Wallflower

NPS Photo

Species: Erysimum asperum
Common name: western wallflower

Seedling Identification: Spatulate, petioled, sand paper textured leaves that have hairs that lie pointing to the distal end of the leaves.


Erysimum asperum – western wallflower
Average number of good seeds per gram bulk matter: n.m.
Average number of good seeds per gram cleaned: 3005
Commercial estimates of seeds per gram: n.a.
Percent seed: n.m.
Percent live: n.m.
Collection dates: July 14 and 15
Collection effort: >6 grams in 4 person hours
Collection notes: Easy to collect large amounts from a few plants if found at the correct time, but seed dispersed soon after maturation. Watch carefully!
Cleaning notes: Cleaned seed measurement included seed only. All seed broke when tested with fingernail so counted all but the empty looking ones.

Did You Know?

Stemless Hymenoxys

The scientific name for the Stemless Hymenoxys is Hymemoxys acaulis. Acaulis means "stemless" and referes to the leafless stalks which bear the flower heads. More...