Distribution of Cowbane (Oxypolis rigidior) specimens in the ISM Herbarium |
Oxypolis rigidior Records for Boone County, Illinois- ISM accession# 45147
- Collector: Fell, Egbert W.
Date: 29 Jul 1954 - ISM accession# 45732
- Collector: Fell, Egbert W.
Date: 08 Sep 1954
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