Townsendia exscapa (Richardson) Porter

Chicago citation style
Townsendia exscapa (Richardson) Porter. 6 Jun 1901. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12735601&repo=DPLA. (Accessed December 18, 2018.)
APA citation style
(6 Jun 1901) Townsendia exscapa (Richardson) Porter. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12735601&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12735601&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.