Silphium asteriscus var. dentatum (Elliott) Chapm

Chicago citation style
Silphium asteriscus var. dentatum (Elliott) Chapm. 21 Jun 1897. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12996720&repo=DPLA. (Accessed December 17, 2018.)
APA citation style
(21 Jun 1897) Silphium asteriscus var. dentatum (Elliott) Chapm. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12996720&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12996720&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.