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Asteraceae
Silphium
Silphium speciosum
Silphium speciosum
Nutt., 1840
8% complete
No common name
Trans. Amer. Philos. Soc. , n.s., 7: 341
Specifications
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Synonyms
Silphium integrifolium var. laeve
Torr. & A.Gray
Silphium laeve
Hook.
Balsamorhiza silphioides
Geyer ex Hook.