Seed Study - Penstemon grandiflorus
Species: Penstemon grandiflorus
Seedling identification: Cotyledons are tiny, narrow, pointed and waxy looking. Initially, when the true leaves emerge one is longer than the other, and the leaves are fairly narrow. As the leaves grow they widen at the center.
Penstemon grandiflorus – large beardtongue
Average number of good seeds per gram bulk matter: n.m.
Average number of good seeds per gram cleaned: 591
Commercial estimates of seeds per gram: 1212
Percent seed: 43
Percent live: 97
Collection dates: July 28; August 15 and 23
Collection effort: 21 grams in 8 person hours
Collection notes: Not a common plant and browsers often eat flower stalks. Also some of the seed collected was fungus damaged.
Cleaning notes: Clean seed measurement was pure hard seed.
Did You Know?
Lewis and Clark, while on their journey up the Missouri River in 1804, noted that this "wild dog of the prairie...appears here in infinite numbers." More...