Distribution of Eastern Prickly-pear (Opuntia humifusa) specimens in the ISM Herbarium |
Opuntia humifusa Records for Mason County, Illinois- ISM accession# 11740
- Collector: Fuller, George D.
Date: 10 Jun 1939 - ISM accession# 31618
- Collector: Winterringer,glen S.
Date: 22 May 1950 - ISM accession# 45348
- Collector: Rexroat, Rollo T.
Date: 27 Jun 1954
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