Silphium intergrifolium var. integrifolium

Chicago citation style
Silphium intergrifolium var. integrifolium. 27 Jul 1875. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12994295&repo=DPLA. (Accessed November 15, 2018.)
APA citation style
(27 Jul 1875) Silphium intergrifolium var. integrifolium. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12994295&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12994295&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.