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- [3] SCANNING ELECTRON MICROSCOPY OF POLLEN AS AN AID TO SYSTEMATICS OF VERNONIA (COMPOSITAE) BULLETIN OF THE TORREY BOTANICAL CLUB, 1970, 97 (06): : 325 - &
- [5] DNA content in species of Vernonia and Vernonanthura from South America: An approach to systematics and evolution of the Vernonieae (Asteraceae) PLANT BIOSYSTEMS, 2017, 151 (01): : 131 - 138