a. Flowering branch. b. Node with stipules. c. Hairs, upper from abaxial leaf surface, lower from pedicel. d. Flower, posterior petal uppermost. e. Cutaway view of flower with six stamens and gynoecium, claw of posterior petal shown at right for orientation. f. Four stamens removed from flower in e, abaxial view. g. Immature fruit with accrescent calyx. Scale bar equivalents:
a, 4 cm; b, 6.7 mm; c, 0.14 mm; d, 5 mm; e, f, 3.3 mm; g, 6.2 mm. Drawn by Karin Douthit.—Based on Maguire & Wurdack 36406, NY. First published in Mem. New York Bot. Gard. 32: 120. 1981; reproduced with permission of the author.