caption, smaller image
Stigmaphyllon retusum and S. dichotomum. a–h, S. retusum. a. Flowering branch and detail of abaxial surface of lamina. b. Lobed leaf. c. Umbel. d. Posterior petal. e. Androecium laid flat, adaxial view, stamen second from right opposing the posterior petal. f. Gynoecium, anterior style in the center. g. Two samaras. h. Embryo. i–o, S. dichotomum. i. Flowering branch and detail of abaxial surface of lamina. j. Umbel. k. Posterior petal. l. Portion of androecium laid flat, adaxial view, posterior stamen on extreme left, anterior stamen on extreme right. m. Gynoecium, anterior style in the center, and lateral view of anterior style. n. Two samaras. o. Embryo. Scale bar equivalents: a, 4 cm (detail, 1.3 mm); b, 4 cm; c, 1.3 cm; d, 8 mm; e, f, 4 mm; g, 2 cm; h, 4 mm; i, 4 cm; j, 1.3 cm; k, 8 mm; l, m, 4 mm; n, 2 cm; o, 5.7 cm. Based on: a, c–f, Fryxell & Anderson 3485; b, Croat 40296; g, Sandino 2571 (above, Nicaragua), Fryxell & Anderson 3522 (below, Mexico); h, Pipoly 4542; i, j, Smith 1525; k–m, de Bruijn 1556; n, Fryxell et al. 4400 (above), Romero C. 2045 (below); o, Romero C. 2045. Drawn by Karin Douthit. First published by C. Anderson in Contr. Univ. Michigan Herb. 16: 27. 1987; reproduced with the author's permission.
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