• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Seed Study - Verbena bracteata

Verbena bracteata - Prostrate Vervain

Verbena bracteata - Prostrate Vervain

NPS Photo

Species: Verbena bracteata
Common name: prostrate vervain

Seedling identification: Cotyledons are fairly small, ovate and purple tinged. Primary leaves are lobed with prominent veins and are purple tinged near the stem.

 

Verbena bracteata – prostrate vervain
Average number of good seeds per gram bulk matter: n.m.
Average number of good seeds per gram cleaned: 1803
Commercial estimates of seeds per gram: n.a.
Percent seed: 74
Percent live: 74
Collection dates: August 30 and September 1.
Collection effort: >4 grams in 3 person hours
Collection notes: Easy to collect in large amounts.
Cleaning notes: Clean seed measurement was obtained using pure seed.

Did You Know?

fire on the prairie

Fire is an important factor in protecting the prairie. Historically, fires burned across the prairie every 4 to 7 years. Fires burn the small trees that would otherwise march across the prairie and turn the grasslands to forest.