Machaeranthera canescens var. canescens (Pursh) A. Gray

Chicago citation style
Machaeranthera canescens var. canescens (Pursh) A. Gray. 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 October 21, 2019.)
APA citation style
(21 Aug 1901) Machaeranthera canescens var. canescens (Pursh) A. Gray. 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.