The Distichous Euphorbiaceae genera of Thailand
Floral character differences, especially in staminate flowers, are explained for a group of genera in Euphorbiaceae (Breynia. Bridelia, Chaetocarpus, Cleistanthus. Fh<eggea. Glochidion, Leptopus. Margaritaria. Phyllanthus. and Sauropus). These genera are difficult to identify, because they all look similar. with distichous leaves and fascicled or solitary flowers. Separate indented keys are provided for staminate and pistillate tlowers. A multi-access key is presented for all characters. Short descriptions and tigures of the staminate flowers are proviCled for each genus.