Distribution of Common Knotweed (Polygonum aviculare) specimens in the ISM Herbarium |
Polygonum aviculare Records for Cass County, Illinois- ISM accession# 21019
- Collector: Fuller, George D.
Date: 05 Oct 1946 - ISM accession# 48571
- Collector: Rexroat, Rollo T.
Date: 08 Sep 1955 - ISM accession# 77155
- Collector: Rexroat. Rollo T.
Date: 24 Ost 1964
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