Distribution of Foxglove Beard Tongue (Penstemon digitalis) specimens in the ISM Herbarium |
Penstemon digitalis Records for Douglas County, Illinois- ISM accession# 19439
- Collector: Fuller, George D.
Date: 08 Jun 1946 - ISM accession# 59409
- Collector: Winterringer,glen S.
Date: 31 May 1959 - ISM accession# 86951
- Collector: Phillippe, Loy
Date: 24 Jun 1971
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