• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Seed Study - Hesperostipa comata

Species: Hesperostipa comata
Common name: needle and thread


Hesperostipa comata – needle and thread
Average number of good seeds per gram bulk matter: n.m.
Average number of good seeds per gram cleaned: 39
Commercial estimates of seeds per gram: 254
Percent seed: n.m.
Percent live: 71
Collection dates: July 8 and 9.
Collection effort: 110 grams in 24 person hours.
Collection notes: Seeds disperse soon after maturing, so watch carefully. Large sized seed and long awns make collection slow and seed hard to pack into collection bags. Plan on collecting a lot more seed than you think you will need.
Cleaning notes: Cleaned seed measurement was mostly pure seed and awns. A few seeds were soft (therefore not counted) but most were hard.

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...