• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Seed Study - Bouteloua gracilis

Bouteloua gracilis - Blue Grama

Bouteloua gracilis - Blue Grama

NPS Graphic

Species: Bouteloua gracilis
Common name: blue grama

Vegetative identification: Blades narrow, drooping and usually smooth except at the collar where there is a tuft of hair sticking out from each side of the collar.

 

Bouteloua gracilis – blue grama
Average number of good seeds per gram bulk matter: n.m.
Average number of good seeds per gram cleaned: 191 (98)
Commercial estimates of seeds per gram: 1819; 1596 (772)
Percent seed: 18
Percent live: n.m.
Collection dates: October 11 and 20
Collection effort: 120 grams in 10 person hours
Collection notes: Abundant and most plants flowered but again many seed heads were empty.
Cleaning notes: Cleaned seed was with empty florets but stripped from rachis.

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