a. Branch with staminate flowers. b. Base of lamina with marginal gland. c. Node with stipules. d. Cluster of staminate flowers. e. Bud of staminate flower. f. Staminate flower. g. Old stamen with twisted anther. h. "Bisexual" flower. i. Young anther from "bisexual" flower. j. Gynoecium. k. Style tips, three external views and one longitudinal section. l. Branch with fruits. m. Fruits, two side views and one from above. Scale bar equivalents:
a, 4 cm; b, 4 mm; c, 8 mm; d, 1.3 cm; e, 4 mm; f, 8 mm; g, 1.3 mm; h, 8 mm; i, 1.3 mm; j, 2 mm; k, 0.67 mm; l, 4 cm; m, 1.3 cm. Based on: a–g, Phillipson et al. 3424, MO; h–m, Phillipson et al. 3451, MICH. Drawn by Karin Douthit. First published by W. R. Anderson in Contr. Univ. Michigan Herb. 23: 55. 2001.