Senecio spinosus DC

Chicago citation style
Senecio spinosus DC. 8 May 1922. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_13132728&repo=DPLA. (Accessed December 15, 2018.)
APA citation style
(8 May 1922) Senecio spinosus DC. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_13132728&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_13132728&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.