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18 rosinweeds species
Silphium perfoliatum
Silphium laciniatum
Silphium terebinthinaceum
Silphium integrifolium
Silphium asteriscus
Silphium albiflorum
Silphium brachiatum
Silphium glutinosum
Silphium mohrii
Silphium perplexum
Silphium wasiotense
Silphium confertifolium
Silphium compositum
Silphium asperrimum
Silphium reniforme
Silphium gracile
Silphium pinnatifidum
Silphium radula
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