Erigeron compositus subsp. discoideus (A. Gray) Piper

Chicago citation style
Erigeron compositus subsp. discoideus (A. Gray) Piper. 6 Aug 1911. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12743008&repo=DPLA. (Accessed December 15, 2018.)
APA citation style
(6 Aug 1911) Erigeron compositus subsp. discoideus (A. Gray) Piper. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12743008&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12743008&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.