a. Fruiting branch. b. Enlargement of abaxial surface of lamina. c. Node to show petioles and minute stipules. d. Abaxial view of samara. e. Adaxial view of samara. f. Nut of samara with lateral wing cut away, lateral view to show dorsal wing. Scale bar equivalents:
a, 4 cm; b, 1.3 cm; c, 8 mm; d–f, 2 cm. Based on Breedlove 35105, MICH. Drawn by Karin Douthit. First published in Contr. Univ. Michigan Herb. 25: 126. 2007; reproduced with permission of the authors.