Distribution of Giant St. John's Wort (Hypericum pyramidatum) specimens in the ISM Herbarium |
Hypericum pyramidatum Records for Knox County, Illinois- ISM accession# 27133
- Collector: Winterringer,glen S.
Date: 21 Oct 1949 - ISM accession# 45495
- Collector: Winterringer,glen S.
Date: 21 Sep 1954
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