A. Leafy stem, with enlargement of abaxial surface to show persistent hairs. B. Part of inflorescence. C. Umbel of four flower buds. D. Opening flower bud. E. Flower with petals removed, subtended by persistent bracteoles (above), and same with bracteoles half cut away (below), the eglandular anterior sepal in center. F. Abaxial view of lateral sepal with two nearly connate glands. G. Flower from above with posterior petal uppermost (left) and lateral view with two petals removed and posterior petal to the right (right). H. Androecium laid out, adaxial view, the shortest stamen (fifth from right) opposite posterior petal. I. Lateral (far left) and adaxial (near left) views of anthers opposite petals, and lateral (near right) and adaxial (far right) views of anthers opposite sepals. J. Gynoecium with anterior style in center (right) and enlargement of style apex (above). K. Samaras, abaxial view (above) and adaxial view (below). L. Cross-section of samara showing large lateral wing, smaller dorsal wing, single winglets between dorsal and lateral wings, and single winglets outside lateral wing. Based on: A–J, Mori et al. 20945, NY; K, L, Silva 2830, NY. Drawn by Bobbi Angell. Reproduced with permission from Mem. New York Bot. Gard. 76(2): 424. 2002. © B. Angell.