Citation: Be. Vanwyk et Pjd. Winter, THE HOMOLOGY OF RED FLOWER COLOR IN CRASSULA, COTYLEDON AND TYLECODON(CRASSULACEAE), Biochemical systematics and ecology, 23(3), 1995, pp. 291-293
Citation: Be. Vanwyk et al., CHEMOTAXONOMIC VALUE OF ANTHOCYANINS IN THE TRIBE LIPARIEAE (FABACEAE), Biochemical systematics and ecology, 23(3), 1995, pp. 295-297
Citation: Be. Vanwyk et Pjd. Winter, CHEMOTAXONOMIC VALUE OF ANTHOCYANINS IN PODALYRIA AND VIRGILIA (TRIBEPODALYRIEAE, FABACEAE), Biochemical systematics and ecology, 22(8), 1994, pp. 813-818
Citation: Pjd. Winter et Be. Vanwyk, THE TAXONOMIC VALUE OF EPIDERMAL CHARACTERS IN THE LEAF OF HETEROMORPHA AND SOME RELATED GENERA (APIACEAE), Bothalia, 24(2), 1994, pp. 187-194
Citation: Pjd. Winter et al., THE MORPHOLOGY AND DEVELOPMENT OF THE FRUIT OF HETEROMORPHA (APIACEAE), South African journal of botany, 59(3), 1993, pp. 336-341