Abstract
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References
Candolle, A.P. de (Oct. 1836) Prodromus systematis naturalis regni vegetabilis, vol. 5. Treuttel & Würtz, Paris, 706 pp. https://doi.org/10.5962/bhl.title.286
Claassen, C. (1970) Vernonia oligocephala. Flowering Plants of Africa 40: t. 1592.
Harvey, W.H. (1865) Compositae Juss. In: Harvey, W.H. & Sonder, O.W. (Eds.) Flora Capensis; being a systematic description of the plants of the Cape Colony, Caffraria & Port Natal 3. Hodges, Smith & Co. Dublin; I.C. Jutta, Cape Town, pp. 44–530. https://doi.org/10.5962/bhl.title.821
Hilliard, O.M. (1972) Compositae. In: Ross, J.H., Flora of Natal. Memoirs of the Botanical Survey of South Africa 39. Botanical Research Institute, Pretoria, pp. 345–379.
Hilliard, O.M. (1977) Compositae in Natal. University of Natal Press, Pietermaritzburg, 659 pp.
Kunth, K.S. (1820) Nova genera et species plantarum, vol. 4 (folio ed.). Lutetiae Parisiorum: Sumtibus Librairie Graeco-Latino-Germanicae, 246 pp. https://doi.org/10.5962/bhl.title.640
Kuntze, O. (1891) Revisio generum plantarum, vol. 2. Charles Klincksieck, Paris, 610 + 27 pp. https://doi.org/10.5962/bhl.title.327
Kuntze, O. (1898) Revisio generum plantarum, vol. 3 (2). Charles Klincksieck, Paris, 201 + 576 pp. https://doi.org/10.5962/bhl.title.327
Letty, C. (1962) Wild flowers of the Transvaal. Wild Flowers of the Transvaal Book Fund, Pretoria, 362 pp.
Linnaeus, C. (1753) Species plantarum. Salvius, Stockholm, 1200 pp. https://doi.org/10.5962/bhl.title.11179
Merxmüller, H. (1967) Asteraceae. Prodromus einer Flora von Südwestafrika 139: 1–185.
Robinson, H. (1999) Revisions in paleotropical Vernonieae (Asteraceae). Proceedings of the Biological Society of Washington 112: 220–247.
Robinson, H., Skvarla, J.J. & Funk, V.A. (2016) Vernonieae (Asteraceae) of southern Africa: a generic disposition of the species and a study of their pollen. Phytokeys 60: 49–126. https://doi.org/10.3897/phytokeys.60.6734
Schreber, J.C.D. von (1791) Genera plantarum, vol. 2. Suntu Varrentrapii et Wenneri, Frankfurt am Main 541. [1]–8 + 491 pp.
Spach, E. (June 1836) Conspectus monographiae Hypericacearum. Annales des Sciences Naturelles, ser. 2, Botanique 5: 349–369. [https://www.biodiversitylibrary.org/item/111695#page/353/mode/1up]
Stevens, P.F. (1991) George Bentham and the Kew Rule. In: Hawksworth, D.L. (Ed.) Improving the stability of names: needs and options; Proceedings of an international symposium, Kew, 20–23 February, 1991. Regnum Vegetabile 123. Koeltz Scientific Books, Konigstein, pp. 157–168.
Swelankomo, N., Manning, J.C. & Magee, A.R. (2016) The genus Hilliardiella (Asteraceae: Vernonieae) in southern Africa. South African Journal of Botany 106: 41–59. https://doi.org/10.1016/j.sajb.2016.05.010
Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile 159. Koeltz Botanical Books, Glashütten. https://doi.org/10.12705/Code.2018
Walpers, W.G. (1843) Repertorium botanices systematicae (Tom. I et II), Supplementum Primum. Sumtibus Friderici Hofmeister, Leipzig, 256 pp. [https://www.biodiversitylibrary.org/page/7383388#page/751/mode/1up]
Claassen, C. (1970) Vernonia oligocephala. Flowering Plants of Africa 40: t. 1592.
Harvey, W.H. (1865) Compositae Juss. In: Harvey, W.H. & Sonder, O.W. (Eds.) Flora Capensis; being a systematic description of the plants of the Cape Colony, Caffraria & Port Natal 3. Hodges, Smith & Co. Dublin; I.C. Jutta, Cape Town, pp. 44–530. https://doi.org/10.5962/bhl.title.821
Hilliard, O.M. (1972) Compositae. In: Ross, J.H., Flora of Natal. Memoirs of the Botanical Survey of South Africa 39. Botanical Research Institute, Pretoria, pp. 345–379.
Hilliard, O.M. (1977) Compositae in Natal. University of Natal Press, Pietermaritzburg, 659 pp.
Kunth, K.S. (1820) Nova genera et species plantarum, vol. 4 (folio ed.). Lutetiae Parisiorum: Sumtibus Librairie Graeco-Latino-Germanicae, 246 pp. https://doi.org/10.5962/bhl.title.640
Kuntze, O. (1891) Revisio generum plantarum, vol. 2. Charles Klincksieck, Paris, 610 + 27 pp. https://doi.org/10.5962/bhl.title.327
Kuntze, O. (1898) Revisio generum plantarum, vol. 3 (2). Charles Klincksieck, Paris, 201 + 576 pp. https://doi.org/10.5962/bhl.title.327
Letty, C. (1962) Wild flowers of the Transvaal. Wild Flowers of the Transvaal Book Fund, Pretoria, 362 pp.
Linnaeus, C. (1753) Species plantarum. Salvius, Stockholm, 1200 pp. https://doi.org/10.5962/bhl.title.11179
Merxmüller, H. (1967) Asteraceae. Prodromus einer Flora von Südwestafrika 139: 1–185.
Robinson, H. (1999) Revisions in paleotropical Vernonieae (Asteraceae). Proceedings of the Biological Society of Washington 112: 220–247.
Robinson, H., Skvarla, J.J. & Funk, V.A. (2016) Vernonieae (Asteraceae) of southern Africa: a generic disposition of the species and a study of their pollen. Phytokeys 60: 49–126. https://doi.org/10.3897/phytokeys.60.6734
Schreber, J.C.D. von (1791) Genera plantarum, vol. 2. Suntu Varrentrapii et Wenneri, Frankfurt am Main 541. [1]–8 + 491 pp.
Spach, E. (June 1836) Conspectus monographiae Hypericacearum. Annales des Sciences Naturelles, ser. 2, Botanique 5: 349–369. [https://www.biodiversitylibrary.org/item/111695#page/353/mode/1up]
Stevens, P.F. (1991) George Bentham and the Kew Rule. In: Hawksworth, D.L. (Ed.) Improving the stability of names: needs and options; Proceedings of an international symposium, Kew, 20–23 February, 1991. Regnum Vegetabile 123. Koeltz Scientific Books, Konigstein, pp. 157–168.
Swelankomo, N., Manning, J.C. & Magee, A.R. (2016) The genus Hilliardiella (Asteraceae: Vernonieae) in southern Africa. South African Journal of Botany 106: 41–59. https://doi.org/10.1016/j.sajb.2016.05.010
Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile 159. Koeltz Botanical Books, Glashütten. https://doi.org/10.12705/Code.2018
Walpers, W.G. (1843) Repertorium botanices systematicae (Tom. I et II), Supplementum Primum. Sumtibus Friderici Hofmeister, Leipzig, 256 pp. [https://www.biodiversitylibrary.org/page/7383388#page/751/mode/1up]