Seed Study - Calylophus serrulatus

Species: Calylophus serrulatus
Common name: yellow evening primrose

Calylophus serrulatus – yellow evening primrose
Average number of good seeds per gram bulk matter: n.m.
Average number of good seeds per gram cleaned: 872 (514)
Commercial estimates of seeds per gram: n.a.
Percent seed: n.m.
Percent live: n.m.
Collection dates: September 8 and 9.
Collection effort: 2 grams in 2 person hours
Collection notes: Difficult to collect because the widely scattered populations are hard to find. After maturing the pods burst open and most of the seeds fall quickly. Manually removing the seed from the pods is quite time consuming, the pods are tough and stringy and part of the seed is persistent to them.
Cleaning notes: Clean seed was out of the pods but with lots of chaff. The fingernail test seems to destroy good seed.

Last updated: January 23, 2018

Contact the Park

Mailing Address:

26611 US Highway 385
Hot Springs, SD 57747


(605) 745-4600

Contact Us