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Heteropterys. a–h, H. hatschbachii. a. Flowering branch. b. Base of leaf, abaxial view, to show glands on petiole, tiny glands on lamina, and fine reticulum. c. Flower buds, with and without glands on lateral sepals. d. Flower, lateral view, with all petals removed except posterior and with one lateral sepal cut away. e. Petals, abaxial view to show hairs, posterior petal (left) and lateral petal (right). f. Anthers, adaxial view (left) and abaxial view (right). g. Distal portion of style. h. Fruit with two samaras developed. i–o, H. mathewsana. i. Leaf, abaxial view. j. Flower bud. k. Flower, lateral view with posterior petal to right. l. Posterior petal, abaxial view. m. Anthers, abaxial view (left) and adaxial view (right). n. Distal portion of style. o. Fruit with two samaras developed. Scale bar equivalents: a, i, 4 cm; b, 1.3 cm; c–e, j–l, 4 mm; f, m, 2 mm; g, n, 1 mm; h, o, 2 cm.—Based on: a–h, Anderson 11257, MICH, except gland-bearing bud in c, Hatschbach 37651, MICH; i–n, Ribeiro & Pinheiro 1189, MICH; o, Ribeiro & Pinheiro 1188, MICH. Drawn by Karin Douthit. First published in Contr. Univ. Michigan Herb. 22: 13. 1999; reproduced with permission of the author.
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