Oenothera deltoides var. howellii Munz

Chicago citation style
Oenothera deltoides var. howellii Munz. 19 Apr 1956. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_2079534&repo=DPLA. (Accessed November 14, 2018.)
APA citation style
(19 Apr 1956) Oenothera deltoides var. howellii Munz. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_2079534&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_2079534&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.