Machaeranthera sp

Chicago citation style
Machaeranthera sp. 6 Apr 1950. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12741117&repo=DPLA. (Accessed November 13, 2018.)
APA citation style
(6 Apr 1950) Machaeranthera sp. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12741117&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12741117&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.