Centaurea nigrescens Willd

Chicago citation style
Centaurea nigrescens Willd. Jul 1896. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12981248&repo=DPLA. (Accessed October 16, 2018.)
APA citation style
(Jul 1896) Centaurea nigrescens Willd. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12981248&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12981248&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.