Machaeranthera canescens (Pursh) A. Gray var. canescens

Chicago citation style
Machaeranthera canescens (Pursh) A. Gray var. canescens. 21 Aug 1901. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12762883&repo=DPLA. (Accessed November 19, 2018.)
APA citation style
(21 Aug 1901) Machaeranthera canescens (Pursh) A. Gray var. canescens. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12762883&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12762883&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.