Heteropterys. a–e, H. murcapiresii.
a. Flowering branch. b. Umbel of four flower buds. c. Flower bud about to open. d. Anther, abaxial view. e. Distal portion of style. f–i, H. oligantha.
f. Branch with immature fruits. g. Umbel of three old flowers with developing samaras. h. Distal portion of style. i. Samara. Scale bar equivalents:
a, 4 cm; b, 1.3 cm; c, 4 mm; d, 1.3 mm; e, 0.7 mm; f, 4 cm; g, 8 mm; h, 0.7 mm; i, 4 cm.—Based on: a–e, Pires 14456, MICH; f–h, Forest Dept. 3769, NY; i, Forest Dept. 3865, NY. Drawn by Karin Douthit. First published in Mem. New York Bot. Gard. 32: 189. 1981; reproduced with permission of the author.