a. Branches with flowers and fruits. b. Stipules against stem, petiole removed. c. Flower (including entire pedicel), posterior petal uppermost. d. Stamens, side view (left) and adaxial view (right). e. Gynoecium. f. Fruit. Scale bar equivalents:
a, 4 cm; b, 8 mm; c, 5.7 mm; d, e, 2.7 mm; f, 8 mm.—Based on: a, b, f, Maguire & Politi 28021, MICH; c–e, Maguire & Politi 28139, NY. Drawn by Karin Douthit. First published in Mem. New York Bot. Gard. 32: 128. 1981; reproduced with permission of the author.