a. Flowering branch. b. Base of leaf, abaxial view, and stipules. c. Axillary two-flowered umbels. d. Flower, lateral view, posterior petal to left. e. Posterior petal, flattened. f. Androecium laid flat, abaxial view, the stamen to left opposite posterior petal. g. Gynoecium, anterior style in middle. h. Distal portion of style. i. Dried fruits, lateral view (left) and from above (right). Scale bar equivalents:
a, 4 cm; b, 6.7 mm, c, 2 cm; d, e, 6.7 mm; f, g, 4 mm; h, 1 mm; i, 2 cm. Based on: a, Stevens 14675, MICH; b–h, Stevens 22927, MICH; i, Stevens 9123, MICH. Drawn by Karin Douthit. First published by W. R. Anderson in Contr. Univ. Michigan Herb. 16: 97. 1987; reproduced with the author's permission.