Distribution of Japanese Knotweed (Polygonum cuspidatum) specimens in the ISM Herbarium |
Polygonum cuspidatum Records for Sangamon County, Illinois- ISM accession# 89866
- Collector: Shildneck, Paul
Date: 29 Sep 1978 - ISM accession# 105117
- Collector: Shildneck, Paul
Date: 29 Sep 1978 - ISM accession# 106577
- Collector: Shildneck, Paul
Date: 15 Oct 1980
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