Heteropterys dichromocalyx. a. Flowering branch, with enlargements of abaxial leaf surface (left) and adaxial surface (right). b. Portion of inflorescence. c. Flower, posterior petal uppermost. d. Petal, abaxial view. e. Gynoecium. f. Distal portion of style. Scale bar equivalents: a, 4 cm (1.3 cm); b, 2 cm; c, 4 mm; d, 2 mm; e, 2.7 mm; f, 0.8 mm.—Based on Silva & Brazão 60610, MICH. Drawn by Karin Douthit. First published in Mem. New York Bot. Gard. 32: 194. 1981; reproduced with permission of the author.
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