Old World P. coronarius and southwestern North American P. microphyllus) and P. ×nivalis Jacques (itself possibly a hybrid of P. coronarius and eastern
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LAYOUT:treatment:TUOYAL familyHydrangeaceae genusPhiladelphus speciesPhiladelphus coronarius Linnaeus Sp. Pl. 1: 470. 1753. Alan S. Weakley, James Henrickson Common
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Erigeron. Phytologia 67: 61–66. Nesom, G. L. 1990g. Taxonomy of the Erigeron coronarius group of Erigeron sect. Geniculactis (Asteraceae: Astereae). Phytologia
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