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Silphium
Silphium asteriscusSpecies

Silphium asteriscus var. asteriscus

Silphium asteriscus var. dentatum

Silphium asteriscus var. latifolium

Silphium asteriscus var. simpsonii

Silphium asteriscus var. trifoliatum

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Taxonomy based on ITIS

Phenology data provided by iNaturalist.org