Distribution of Swamp Milkweed (Asclepias incarnata) specimens in the ISM Herbarium |
Asclepias incarnata Records for Logan County, Illinois- ISM accession# 12862
- Collector: Fuller, George D.
Date: 15 Sep 1943 - ISM accession# 12898
- Collector: Fuller, George D.
Date: 12 Aug 1942 - ISM accession# 56915
- Collector: Heitmann, C.& D.
Date: 21 Aug 1958
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