Silphium
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Plants of this genus
- Silphium laciniatum (archived)
- Silphium perfoliatum (Dixter Form)
- Silphium gracile (archived)
- Silphium compositum (Coll. Georgia) (archived)
- Silphium mohrii
- Silphium terebinthinaceum (archived)
- Silphium wasiotense (archived)
- Silphium radula gracile
- Silphium terebinthinaceum pinnatifidum (archived)
- Silphium mohrii (donkere stengel) (archived)
- Silphium integrifolium subsp. integrifolium (archived)
- Silphium integrifolium subsp. laeve (archived)
- Silphium connatum
- Silphium asteriscus var trifoliatum (archived)
- Silphium hybr. (perfoliatum x wasiotense)
- Silphium albiflorum (archived)