Silphium compositum A. Gray

Chicago citation style
Silphium compositum A. Gray. 3 Sep 1906. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12999300&repo=DPLA. (Accessed November 15, 2018.)
APA citation style
(3 Sep 1906) Silphium compositum A. Gray. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12999300&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12999300&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.