a. Flowering branch and separate large leaf. b. Base of petiole showing large gland and tiny epipetiolar stipules. c. Margin of lamina to show embedded gland. d. Flower bud. e. Flower, side view, posterior petal uppermost, and adaxial views of lateral petal (right) and posterior petal (left). f. Androecium laid out, adaxial view, with five anthers removed. g. Side view of stamen. h. Gynoecium, with anterior style in center. i. "Normal" samaras, abaxial view (left) and adaxial view (right). j & k. Reduced malformed samaras, abaxial views. Scale bar equivalents:
a, 4 cm; b, 8 mm; c, 2 mm; d–f, 4 mm; g, h, 2 mm; i, 2 cm; j, k, 1 cm. Based on: a–h, Schunke V. 10947, San Martín, Peru, MO; i, Belshaw 3265, San Martín, Peru, MICH; j, Oliveira 4195, Pará, Brazil, MICH; k, Martinelli 7278, Pará, Brazil, MICH. Drawn by Karin Douthit. First published by W. R. Anderson in Novon 16: 203. 2006; reproduced with the author's permission.