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Byrsonima. a–f. B. onishiana. a. Habit, including underground base. b. Intrapetiolar stipules on base of petiole. c. Flower, posterior petal uppermost. d. Stamens, adaxial view (left) and side view (right). e. Gynoecium, with styles bending away from posterior petal. f. Fruit drawn from behind to show enlarged sepals and persistent petals. g–l, B. spinensis. g. Flowering branch. h. Node with connate intrapetiolar stipules. i. Two-flowered cincinnus, the open flower with posterior petal at upper right. j. Stamens, adaxial view (left) and side view (right). k. Gynoecium, with styles bending away from posterior petal. l. Enlarging fruit. Scale bar equivalents: a, 4 cm; b, 5.7 mm; c, 8 mm; d, e, 2.7 mm; f, 1 cm; g, 4 cm; h, 4 mm; i, 8 mm; j, 2.7 mm; k, 4 mm; l, 8 mm.—Based on: a–f, Irwin et al. 25824, MICH; g–l, Anderson et al. 35339, MICH. Drawn by Karin Douthit. First published in Contr. Univ. Michigan Herb. 15: 97. 1982; reproduced with permission of the author.
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