Abstract
Pelargonium otaviense Knuth andP. spinosum Willd. are excluded from sect.Glaucophyllum, whileP. grandiflorum (Andr.)Willd.,P. patulum Jacq. andP. tabulare (Burm. f.)L'Hérit. of sect.Eumorpha are included. Sect.Glaucophyllum is characterized by green to glaucous vegetative organs and zygomorphic white to pink corolla with five narrow petals. All the species have an identical pollen and chromosome morphology, the same basic chromosome number (x = 11) and similar flavonoid patterns. A close relationship between sect.Glaucophyllum and sect.Pelargonium is indicated by the occurrence of natural hybrids and concordant characters. Isorhamnetin and luteolin have been detected in the genus for the first time.
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References
Albers, F., 1988: Strategies in chromosome evolution inPelargonium (Geraniaceae). — Monogr. Syst. Bot. Gard.25: 499–502.
, 1984: Untersuchungen zur Karyologie und Mikrosporogenese vonPelargonium sect.Pelargonium (Geraniaceae). — Pl. Syst. Evol.147: 177–188.
Bate-Smith, E. C., 1973: Chemotaxonomy ofGeranium. — Bot. J. Linn. Soc.67: 347–359.
Erdtman, G., 1960: The acetolysis method. A revised description. — Svensk Bot. Tidskr.54: 561–564.
, 1969: Handbook for palynology. — Copenhagen: Munksgaard.
Gibby, M., 1989:Pelargonium ranunculophyllum (Geraniaceae) in southern Africa. — S. African J. Bot.55: 539–542.
, 1990:Pelargonium lanceolatum ×P. patulum—a comparison of wild and synthesized hybrids. — Geraniaceae Group News: Autumn, 8–9.
, 1986: A cytological study ofPelargonium sect.Eumorpha (Geraniaceae). — Pl. Syst. Evol.153: 205–222.
, 1990: Karyological studies inPelargonium sectt.Ciconium, Dibrachia andJenkinsonia (Geraniaceae). — Pl. Syst. Evol. 170: 151–159.
Harvey, W. H., 1860:Geraniaceae. — InHarvey, W. H., Sonder, O. W., (Eds.): Flora Capensis 1. — Cape Town: Robertson.
Knuth, R., 1912:Geraniaceae. — InEngler, A., (Ed.): Das Pflanzenreich4, 129. — Leipzig: Engelmann.
Krieger, M., 1987: Chemosystematische Untersuchungen an Vertretern der GattungPelargonium. — Schriftl. Hausarbeit der Ersten Staatsprüfung für das Lehramt der Sekundarstufe II, Münster (unpubl.).
Schonken, C. M., 1980: 'n Morfologiese en taksonomiese studie van die sekseiGlaucophyllum vanPelargonium. — Unpublished M.Sc. Thesis, University of Stellenbosch.
Snow, R., 1963: Alcoholic hydrochloric acid-carmine as a stain for chromosomes in squash preparations. — Stain Technol.38: 9–13.
Van der Walt, J. J. A., 1977: Pelargoniums of Southern Africa1. — Cape Town: Purnell & Sons.
, 1985: A taxonomic revision of the type section ofPelargonium L'Hérit. (Geraniaceae). — Bothalia15: 345–385.
, 1981: Pelargoniums of Southern Africa2. — Cape Town: Juta & Co.
, 1983: Phytogeography ofPelargonium. — Bothalia14: 517–523.
Yu, S. N., 1985: Untersuchungen zur interspezifischen Kompatibilität und Biosystematik bei der GattungPelargonium. — Diss. Fak. Landw. u. Gartenb. Techn. Univ. München-Weihenstephan.
, 1988: Additional chromosome numbers inPelargonium (Geraniaceae). — Pl. Syst. Evol.159: 165–171.
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Van der Walt, J.J.A., Albers, F. & Gibby, M. Delimitation ofPelargonium sect.Glaucophyllum (Geraniaceae). Pl Syst Evol 171, 15–26 (1990). https://doi.org/10.1007/BF00940594
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DOI: https://doi.org/10.1007/BF00940594