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Heteropterys perplexa. a, h. Flowering branches. b, i. Enlargements of abaxial surface of leaves to show glands. c, j. Flower buds with pedicel and peduncle. d, k. Flower buds from above. e, l. Flowers, posterior petal uppermost. f, m. Partial androecia laid out, the stamen to left opposite posterior petal. g, n. Distal portions of styles, lateral views (left) and adaxial views (right). Scale bar equivalents: a, h, 4 cm; b, i, 2.7 mm; c, j, 1 cm; d, k, 8 mm; e, l, 6.7 mm; f, m, 2.7 mm; g, n, 1 mm.—Based on: a–g, Anderson 11749, MICH; h–n, Irwin et al 23203, MICH. Drawn by Karin Douthit. First published in Contr. Univ. Michigan Herb. 15: 121. 1982; reproduced with permission of the author.
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