Tetrapterys buxifolia. a. Fruiting branch. b. Venation of adaxial (above) and abaxial (below) sides of lamina. c. Base of lamina, abaxial view, to show tiny marginal glands. d. Node to show connate interpetiolar stipules. e. Samara, abaxial view. Scale bar equivalents: a, 4 cm; b, c, 4 mm; d, 2.7 mm; e, 8 mm. Based on Holdridge 838, MICH. Drawn by Karin Douthit. © University of Michigan Herbarium.