Plant taxonomic expertise - SABONET

VORSTER, P.J. 1985. Typification of Geranium lobatum,
basionym of Pelargonium lobatum. South African
Journal of Botany 51: 347–349.
VORSTER, P.J. 1986. Hybridization in Encephalartos.
Excelsa 12: 101–106.
VORSTER, P.J. 1986. Name change: Pelargonium
trifidum (Geraniaceae), the correct name for P.
tripartitum and P. fragile. South African Journal of
Botany 52: 268.
VORSTER, P.J. 1986. Name changes in Mariscus
(Cyperaceae). South African Journal of Botany 52: 265–
266.
VORSTER, P.J. 1986. Name changes: Pelargonium
nanum (Geraniaceae) and its synonyms. South African
Journal of Botany 52: 383–384.
VORSTER, P.J. 1986. Pelargonium desertorum
(Geraniaceae): a new species from the northwestern
Cape Province. South African Journal of Botany 52:
184–186.
VORSTER, P.J. 1986. Pelargonium exhibens
(Geraniaceae): a new species from the eastern Cape
Province. South African Journal of Botany 52: 481–484.
VORSTER, P.J. 1986. Pelargonium lobatum. Flowering
Plants of Africa 49: t.1924.
VORSTER, P.J. 1986. Pelargonium quercifolium.
Flowering Plants of Africa 49: t.1923.
VORSTER, P.J. 1986. Use of the term
paralectotype/lectoparatype. Taxon 35: 316–317.
VORSTER, P.J. 1987. The identities of Pelargonium
ramosissimum and P. tragacanthoides (Geraniaceae).
South African Journal of Botany 53: 65–70.
VORSTER, P.J. 1987. Mariscus microbolbos
(Cyperaceae): a new combination. Kew Bulletin 42:
200.
VORSTER, P.J. 1987. Name change: Pelargonium
minimum (Geraniaceae), the coreect name for P.
fumarioides. South African Journal of Botany 53: 184–
185.
VORSTER, P.J. 1987. Pelargonium divisifolium
(Geraniaceae): a new species from the southwestern
Cape Province. South African Journal of Botany 53: 71–
74.
VORSTER, P.J. 1987. Pelargonium magenteum.
Flowering Plants of Africa 49: t.1947.
GOETGHEBEUR, P. & VORSTER, P.J. 1988. Studeies in
Cyperaceae 7. The genus Alinula J. Raynal: a
reappraisal. Bulletin du Jardin Botanique National de
Belgique 58: 457–465.
OSBORNE, R., GROBBELAAR, N. & VORSTER, P.J. 1988.
South African cycad research: progress and prospects.
South African Journal of Science 84: 891–896.
ROBBERTSE, P.J., VORSTER, P.J. & VAN DER
WESTHUIZEN, S. 1988. Encephalartos graniticolus
(Zamiaceae), a new species from the north-eastern
Transvaal. South African Journal of Botany 54: 363–
366.
ROBBERTSE, P.J., VORSTER, P.J. & VAN DER
WESTHUIZEN, S. 1988. Encephalartos verrucosus
(Zamiaceae), a new species from the north-eastern
Transvaal. South African Journal of Botany 54: 487–
490.
VAN DER WALT, J.J.A. & VORSTER, P.J. 1988.
Pelargoniums of southern Africa, Vol. 3. National
Botanic Gardens of South Africa, Cape Town.
VORSTER, P.J. 1988. The correct author citation for
Pelargonium section Otidia. Bothalia 18: 186.
Vorster
ROBBERTSE, P.J., VORSTER, P.J. & VAN DER
WESTHUIZEN, S. 1989. Encephalartos middelburgensis
(Zamiaceae), a new species from the northeastern
Transvaal. South African Journal of Botany 55: 122–
126.
VORSTER, P.J. 1990. Anatomy of the South African
species of Mariscus (Cyperaceae), and its relation to
environmental conditions. Mitteilungen aus dem Institut
für Allgemeine Botanik, Hamburg 23: 367–386.
VORSTER, P.J. 1990. The bryophytes of Mariepskop,
South Africa: distribution within different phanerogam
communities. Mitteilungen aus dem Institut für
Allgemeine Botanik, Hamburg 23: 469–484.
VORSTER, P.J. 1990. Encephalartos aemulans
(Zamiaceae), a new species from northern Natal. South
African Journal of Botany 56: 239–243.
VORSTER, P.J. 1991. The correct author citation for
Clivia miniata. Bothalia 21: 66.
DREYER, L.L., VORSTER, P.J. & VAN DER WALT, J.J.A.
1992. Pelargonium caylae Humbert. Flowering Plants of
Africa 52: t.2059.
VORSTER, P.J. 1992. Pelargonium nutans. Flowering
Plants of Africa 52: t.2060.
VORSTER, P.J. & MAGGS, G.L. [=Maggs-Kölling, G.L.]
1992. Typification of Pelargonium section Polyactium.
Bothalia 22: 195.
VORSTER, P.J. 1993. Taxonomy of Encephalartos
(Zamiaceae): taxonomically useful external
characteristics. In: D.W. Stevenson & K.J. Norstog
(eds), The biology, structure and systematics of the
Cycadales. Proceedings of the Second International
Conference on Cycad Biology: 294–299. Palm & Cycad
Societies of Australia, Milton.
VORSTER, P.J. 1994. Clivia nobilis. Flowering Plants of
Africa 53: 70–74.
MAGGS, G.L. [=Maggs-Kölling, G.L.], VORSTER, P.J. &
VAN DER WALT, J.J.A. 1995. Taxonomy of the genus
Pelargonium (Geraniaceae): the section Polyactium. I.
Circumscription and intrasectional classification. South
African Journal of Botany 61: 53–59.
MAGGS, G.L. [=Maggs-Kölling, G.L.], VORSTER, P.J. &
VAN DER WALT, J.J.A. 1995. Taxonomy of the genus
Pelargonium (Geraniaceae): the section Polyactium. II.
The subsection Caulescentia. South African Journal of
Botany 61: 173–179.
SPREETH, A.D. & VORSTER, P.J. 1995. Anatomical
studies on the leaflets of the glaucous-leaved
Encephalartos species in South Africa. In: P.J. Vorster
(ed.), Proceedings of the Third International Conference
on Cycad Biology: 263. Cycad Society of South Africa,
Stellenbosch.
VORSTER, P.J. 1995. Aspects of the reproduction of
cycads. 1. Pollination mechanisms and the association
of Amorphocerus (Curculionidae) with Encephalartos.
In: P.J. Vorster (ed.), Proceedings of the Third
International Conference on Cycad Biology: 367–378.
Cycad Society of South Africa, Stellenbosch.
VORSTER, P.J. 1995. Aspects of the reproduction of
cycads. 2. An annotated review of known information.
In: P.J. Vorster (ed.), Proceedings of the Third
International Conference on Cycad Biology: 379–390.
Cycad Society of South Africa, Stellenbosch.
VORSTER, P.J. 1995. The identity of Encephalartos
lebomboensis. In: P.J. Vorster (ed.), Proceedings of the
Third International Conference on Cycad Biology: 245–
254. Cycad Society of South Africa, Stellenbosch.
VORSTER, P.J. (ed.) 1995. Proceedings of the Third
International Conference on Cycad Biology. Cycad
Society of South Africa, Stellenbosch. xi + 449 pp.
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