The anatomy of the cypselae of species of Cineraria L. (Asteraceae–Senecioneae) and its taxonomic significance |
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| Authors: | GLYNIS V. CRON PETRUS J. ROBBERTSE PAUL L. D. VINCENT |
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| Affiliation: | Department of Botany, University of the Witwatersrand, Private Bag 3, 2050 WITS, Republic of South Africa;Margaretha Mes Institute, University of Pretoria, Pretoria, 0002, R.S.A;Department of Botany, University of the Witwatersrand |
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| Abstract: | CRON, G. V., ROBBERTSE, P.J. & VINCENT, P. L. D., 1993. The anatomy of the cypselae of species of Cineraria L. (Asteraceae–Senecioneae) and its taxonomic significance. The anatomy of the cypselae of five species of Cineraria has been investigated to establish its potential usefulness for interspecific taxonomy. The usefulness is apparently limited. The most useful characters are the number of ribs, the extent of sclerenchymatization of the ribs and wings, and the surface sculpturing of the epicarp cells. The shape and symmetry of the cypselae are also useful to a limited degree. The presence of three resin canals in each cotyledon is constant. Their spatial differentiation is described. |
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| Keywords: | Compositae resin canals systematics |
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