The “Amentiferae” or Hamamelidae as an artificial group: A summary statement (original) (raw)

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Abstract

The various contributions to this symposium on the “Amentiferae” reach the general conclusion that the group is an artificial aggregation of taxa of diverse origin that have converged to a common evolutionary plateau in possessing a large syndrome of characteristics that adapt them for successful cross-pollination by wind. Aside from those few families (Eucommiaceae, Casuarinaceae, Fagaceae, and Betulaceae) that apparently do have close relationships (close common origin) with each other and with the Hamamelidales, the following taxa should be removed from the Hamamelidae: Juglandales (Juglandaceae and Rhoipteleaceae) to the Rutales as the Juglandineae near the Anacardiineae; Myricaceae and Leitneriaceae respectively to the Myricales and Leitneriales near the Rutales in the Rutiflorae; Urticales (excluding_Barbeya_ and_Eucommia_) to the Malviflorae near the Malvales and Euphorbiales;Picrodendron to the Euphorbiaceae; Didymelaceae to the Euphorbiales; Myrothamnaceae to the Brunineae of the Pittosporales; and_Balanops, Barbeya_, and_Canacomyrica_, along with_Batis_, to “taxa incertae sedis.”

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1. Rancho Santa Ana Botanic Garden, Claremont, California
   Robert F. Thorne

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1. Robert F. Thorne
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Thorne, R.F. The “Amentiferae” or Hamamelidae as an artificial group: A summary statement.Brittonia 25, 395–405 (1973). https://doi.org/10.2307/2805643

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• Published: 01 October 1973
• Issue Date: October 1973
• DOI: https://doi.org/10.2307/2805643

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