Distribution of Cowbane (Oxypolis rigidior) specimens in the ISM Herbarium |
Oxypolis rigidior Records for Cook County, Illinois- ISM accession# 12189
- Collector: Fuller, George D.
Date: 09 Aug 1938 - ISM accession# 12193
- Collector: Pearsall, Gordon
Date: 18 Sep 1942 - ISM accession# 12194
- Collector: Fuller, George D.
Date: 31 Jul 1943 - ISM accession# 41784
- Collector: Winterringer,glen S.
Date: 28 Sep 1953 - ISM accession# 48314
- Collector: Winterringer,glen S.
Date: 08 Jul 1955 - ISM accession# 55296
- Collector: Swink, Floyd A.
Date: 12 Aug 1951 - ISM accession# 58364
- Collector: Winterringer,glen S.
Date: 14 Sep 1959 - ISM accession# 75714
- Collector: Bennett, H.r.
Date: 06 Oct 1963 - ISM accession# 75822
- Collector: Bennett, H.r.
Date: 02 Oct 1965
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