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- Silphium terebinthinaceum var. pinnatifidum (category Silphium terebinthinaceum)Heliantheae) subtribe Ecliptinae genusSilphium speciesSilphium terebinthinaceum varietySilphium terebinthinaceum var. pinnatifidum (Elliott) A. Gray Manual, 2203 KB (140 words) - 21:10, 5 November 2020
- Silphium terebinthinaceum (category Silphium)subtribe Ecliptinae genusSilphium speciesSilphium terebinthinaceum Show Lower Taxa Silphium terebinthinaceum var. pinnatifidum, Silphium terebinthinaceum var3 KB (223 words) - 19:29, 6 November 2020