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Outline of a New System of Orders and Families of Sympetalae

W. Robyns
Bulletin du Jardin botanique National de Belgique / Bulletin van de Nationale Plantentuin van België
Vol. 42, No. 4 (Dec. 31, 1972), pp. 363-372
DOI: 10.2307/3667661
Stable URL: http://www.jstor.org/stable/3667661
Page Count: 10
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Outline of a New System of Orders and Families of Sympetalae
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Abstract

After discussing briefly the morphological homogeneity of the classical Sympetalae, where only true sympetaly occurs, the author gives a summary of the systems of orders of Sympetalae by Wettstein (1935), Melchior (1964) and Cronquist (1957, 1965, 1968). He proposes then a new system of orders and families based on the main evolutionary and progressive tendencies prevailing in the living Sympetalae. This system starts with the most simple haplostemonous and tetracyclic orders: the Ligustrales and Plantaginales, to end with the diplostemonous Ericales and finally with the pleiomerous Ebenales.

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