Distribution of Late Horse Gentian (Triosteum perfoliatum) specimens in the ISM Herbarium |
Triosteum perfoliatum Records for Calhoun County, Illinois- ISM accession# 64981
- Collector: Winterringer,glen S.
Date: 17 May 1962 - ISM accession# 65070
- Collector: Winterringer,glen S.
Date: 17 May 1962
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