Phaliso, Ntombifikile; McKenzie, Robert J.; Netnou-Nkoana, Noluthando C.; Karis, Per Ola; Barker, Nigel
(Magnolia Press, 2016-02)
The genus Berkheya is paraphyletic with the related genera Cullumia, Cuspidia, Didelta and Heterorhachis embedded within a broader clade termed the ‘Berkheya clade’. As a contribution towards reassessment of species ...