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Bronwenia mathiasiae. a. Flowering branch. b. Node with tiny interpetiolar stipules. c. Detached large leaf, adaxial view. d. Apex of petiole, abaxial view. e. Margin of lamina, abaxial view, to show tiny gland. f. Distal portion of inflorescence with flower buds. g. Flower, posterior petal uppermost. h. Androecium laid out, abaxial view, stamen third from right opposite posterior petal. i. Anthers: abaxial view of anther opposite anterior sepal (left) and adaxial view of anther opposite posterior petal (right). j. Gynoecium, the anterior style in center. k. Apex of anterior style. l. Samara. m. Embryo. Scale bar equivalents: a, 4 cm; b, 6.7 mm; c, 4 cm; d, 8 mm; e, 2 mm; f, g, 8 mm; h, 2.7 mm; i, 2 mm; j, 2.7 mm; k, 1.3 mm; l, 2.7 cm; m, 8 mm. Based on: a, Nelson et al. 518, MICH, and Stannard & Arrais 637, MICH; b, Gentry & Díaz 58617, MICH; c, d, Cid & Nelson 2680, MICH; e, Nelson et al. 518, MICH; f–k, Stannard & Arrais 637, MICH; l, m, Milliken 171, MICH. Drawn by Karin Douthit. First published by W. R. Anderson and C. C. Davis in Contr. Univ. Michigan Herb. 25: 144. 2007.
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B. acapulcensis

B. wurdackii