Tetrapterys anomala. a. Flowering branch. b. Abaxial surface of lamina to show minute glands. c. Node to show minute stipules on interpetiolar ridge. d. Four-flowered umbel. e. Flower, posterior petal uppermost. f. Lateral sepal, abaxial view. g. Two stamens, abaxial view. h. Gynoecium from young flower with styles coherent. i. Gynoecium from old flower after styles have separated. j. Apex of style. k. Samara, abaxial view. Scale bar equivalents: a, 4 cm; b, c, 4 mm; d, e, 8 mm; f, 2.7 mm; g, 1.3 mm; h, i, 2 mm; j, 0.8 mm; k, 1.3 cm. Based on: a–j, Clarke 9105, MICH; k, Redden 2510, MICH. Drawn by Karin Douthit. First published by W. R. Anderson in Contr. Univ. Michigan Herb. 24: 30. 2005.
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