Excentradenia. a–h, E. primaeva.
a. Leaf and old infructescence. b. Node with stipules. c. Detail of adaxial surface of lamina, minus hairs. d. Detail of abaxial surface of lamina, minus hairs. e. Leaf apex enlarged to show marginal glands. f. Hair from abaxial surface of lamina. g. Bracts and bracteoles of umbel, with eccentric glands on four bracteoles. h. Samara, abaxial view. i–p, E. adenophora.
i. Flowering branch. j. Detached large leaf, adaxial view. k. Base of petiole with stipules. l. Umbel of four circinate flower buds. m. Base of umbel enlarged to show eccentric glands on four bracteoles. n. Flower, posterior petal uppermost (in nature the stamens would be less spreading, probably nearly erect). o. Anthers, adaxial view (left) and side view (right). p. Distal portion of style. q, E. propinqua.
q. Samara, abaxial view. Scale bar equivalents:
a, 4 cm; b, 2 cm; c, d, 4 cm; e, 8 mm; f, 0.4 mm; g, 2.7 mm; h–j, 4 cm; k, l, 8 mm; m, 4 mm; n, 8 mm; o, p, 2 mm; q, 4 cm. Based on: a–h, Nascimento et al. 135, MICH; i–p, Fanshawe in Forest Dept. 5604, K; q, Clarke 3970, MICH. Drawn by Karin Douthit. a–h modified from a drawing first published in Mem. New York Bot. Gard. 32: 241. 1982; i–p first published in Contr. Univ. Michigan Herb. 21: 32. 1997; reproduced with permission of the author.