References
Snogerup, S., and B. Snogerup. 2001. Bupleurum L. (Umbelliferae) in Europe – 1. The annuals, B. sect. Bupleurum and sect. Aristata. Willdenowia 31: 205-308. Google Scholar
Snogerup, S., and B. Snogerup. 2001. Bupleurum L. (Umbelliferae) in Europe – 1. The annuals, B. sect. Bupleurum and sect. Aristata. Willdenowia 31: 205-308. Google Scholar