Lophopterys surinamensis. a. Leaf, adaxial view. b. Enlargement of adaxial leaf surface to show reticulum. c. Fruit with only one samara developed, lateral view. d. Fruit with only one samara developed, abaxial view. Scale bar equivalents: a, 4 cm; b, 4 mm; c, d, 2.5 cm. Based on Stahel 223, U. Drawn by Karin Douthit. First published in Contr. Univ. Michigan Herb. 23: 104. 2001; reproduced with permission of the authors.