Silphium radula var. radula
Taxonomy
- Taxonomic Rank
- Variety
Superior Taxa
- Kingdom
- Plantae
- Subkingdom
- Pteridobiotina
- Phylum
- Angiosperms
- Order
- Asterales
- Family
- Asteraceae
- Subfamily
- Asteroideae
- Tribe
- Heliantheae
- Subtribe
- Engelmanniinae
- Genus
- Silphium
- Species
- Silphium radula