Abstract

The inflorescences and flowers of Anthurium denudatum and Philodendron radiatum are here interpreted as fleshy pseudo capitula which evolved from a primitive spike through internode reduction, thickening of the rachis, and loss of sterile appendages. In general, the inflorescence of P. radiatum showed more advanced characteristics than those of A. denudatum . The laminar stamen of P. radiatum is interpreted as a specialization in response to environmental adaptative pressures.

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