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Stigmaphyllon paraense. a. Flowering branch. b. Detail of margin and abaxial surface of lamina. c. Androecium laid flat, adaxial view, stamen second from left opposing the posterior petal. d. Gynoecium; posterior styles are bent slightly outward to show anterior style (in center). e. Samara. f. Longitudinal section through nut of samara; note the air chambers surrounding the locule. g. Embryo. Scale bar equivalents: a, 4 cm; b, 1.3 mm; c, d, 4 mm; e, 2.7 cm; f, 1.3 cm; g, 8 mm. Based on: a–d, Sperling 6322, MICH; e–g, M. Silva 1641, MG. Drawn by Karin Douthit. First published by C. Anderson in Contr. Univ. Michigan Herb. 17: 15. 1990.