Silphium terebinthinaceum Jacq. var. terebinthinaceum

Chicago citation style
Silphium terebinthinaceum Jacq. var. terebinthinaceum. 9 Sep 1940. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12993007&repo=DPLA. (Accessed November 21, 2018.)
APA citation style
(9 Sep 1940) Silphium terebinthinaceum Jacq. var. terebinthinaceum. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12993007&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12993007&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.