• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Seed Study - Onosmodium bejariense

Onosmodium bejariense (Onosmodium molle) - False Gromwell, Soft Hair Marbleseed

Onosmodium bejariense (Onosmodium molle) - False Gromwell, Soft Hair Marbleseed

NPS Photo

Species: Onosmodium bejariense (Onosmodium molle)
Common name: false gromwell, soft hair marbleseed

Seedling identification: Leaves have parallel venation and soft long hair, are quite large, ovate and rounded at the tip.

 

Onosmodium molle – false gromwell
Average number of good seeds per gram bulk matter: n.m.
Average number of good seeds per gram cleaned: 52
Commercial estimates of seeds per gram: n.a.
Percent seed: n.m.
Percent live: 99
Collection dates: July 26 and 28; August 2 and 3; September 25; October 6, 7,11, 12 and 20; November 8.
Collection effort: 133 grams in 15 person hours
Collection notes: Difficult to collect a lot at one time because plants are scattered, plus seeds are slick and fall from the plant easily (not necessarily into the hand or a collection bag). Also, the seed from one plant doesn’t ripen all at once, but instead over a long period of time.
Cleaning notes: Clean measurement was pure seed with a few empty hulls.

Did You Know?

A picture of Alvin McDonald in his caving hat.

Alvin McDonald was the first systematic explorer of Wind Cave. He explored the cave from 1890 until his death in 1893. More...