Silphium asteriscus var. asteriscus L

Chicago citation style
Silphium asteriscus var. asteriscus L. Jul 1886. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12995045&repo=DPLA. (Accessed December 14, 2018.)
APA citation style
(Jul 1886) Silphium asteriscus var. asteriscus L. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12995045&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12995045&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.