Distribution of Japanese Knotweed (Polygonum cuspidatum) specimens in the ISM Herbarium |
Polygonum cuspidatum Records for Brown County, Illinois- ISM accession# 50777
- Collector: Rexroat, Rollo T.
Date: 07 Sep 1956 - ISM accession# 50778
- Collector: Rexroat, Rollo T.
Date: 07 Sep 1956 - ISM accession# 94288
- Collector: Shildneck, Paul
Date: 31 Aug 1984 - ISM accession# 105827
- Collector: Shildneck, Paul
Date: 31 Aug 1984
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