Distribution of Rough Pigweed (Amaranthus retroflexus) specimens in the ISM Herbarium |
Amaranthus retroflexus Records for Sangamon County, Illinois- ISM accession# 6669
- Collector: Fuller, George D.
Date: 11 Aug 1941 - ISM accession# 6671
- Collector: Fuller, George D.
Date: 23 Sep 1941 - ISM accession# 6673
- Collector: Fuller, George D.
Date: 22 Sep 1941 - ISM accession# 6679
- Collector: Fuller, George D.
Date: 24 Jul 1941 - ISM accession# 96348
- Collector: Shildneck & Karnes
Date: 23 Sep 1987
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