Tetrapterys gracilis. a. Flowering habit. b. Flower, posterior petal uppermost. c. Stamens, abaxial view (above) and adaxial view (below). d. Gynoecium. e. Samaras, abaxial view. f. Samara, adaxial view. Scale bar equivalents: a, 4 cm; b, 5.7 mm; c, d, 2 mm; e, f, 2.7 mm. Based on: a, Maguire et al. 41442, NY; b–f, Maguire et al. 41514, NY. Drawn by Karin Douthit. First published by W. R. Anderson in Mem. New York Bot. Gard. 32: 258. 1981.
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