Christianella mesoamericana. a. Flowering branch. b. Node to show stipules. c. Abaxial base of lamina. d. Flower bud. e. Flower from above, posterior petal uppermost. f. Abaxial views of posterior petal (above) and lateral petal (below). g. Androecium laid out, abaxial view, the shortest stamen opposite posterior petal. h. Gynoecium, anterior style in center. i. Apex of style. j. Samaras, abaxial view (left) and adaxial view (right). k. Hairs on abaxial surface of samara wing. Scale bar equivalents: a, 4 cm; b, 2 mm; c, 4 mm; d, e, 8 mm; f, 5.7 mm; g, h, 4 mm; i, 1 mm; j, 2 cm; k, 2 mm. Based on: a, c–h, Sytsma & D'Arcy 3278, MICH; b, Matuda 18577, F; i–k, Standley 87301, F. Drawn by Karin Douthit. © University of Michigan Herbarium.
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C. surinamensis

Keys: Central America (flowers, fruits)