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Tetrapterys styloptera. a. Flowering branch. b. Node with interpetiolar stipules. c. Lamina, abaxial view, showing tiny marginal glands. d. Lamina, abaxial view, showing parallel veinlets. e. Flower bud with portion of inflorescence axis; note large abaxial gland on bracteole. f. Flower, posterior petal uppermost. g. Petals, abaxial view, anterior-lateral (left) and posterior (right). h. Stamens, adaxial view (left) and abaxial view (right). i. Gynoecium. j. Distal portion of style. k. Samara, adaxial view. l. Nut of samara, abaxial view. m. Nut of samara, adaxial view. n. Samara, abaxial view. o. Nut of samara, abaxial view. p. Embryo. Scale bar equivalents: a, 4 cm; b–d, 4 mm; e, f, 8 mm; g, 4 mm; h, i, 2 mm; j, 1 mm; k, 1.3 cm; l, m, 8 mm; n, 1.3 cm; o, 8 mm; p, 3.3 mm. Based on: a, b, e–j, Steward & Ramos P20181, MICH; c, d, Acevedo R. et al. 8310, MICH; k–m, p, Revilla 366, MICH; n, o, Revilla 2505, MICH. Drawn by Karin Douthit. © University of Michigan Herbarium.
all drawings
Keys: Central America (flowers, fruits)
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other drawings of Tetrapterys

all drawings: T. anomala, T. aristeguietae, T. buxifolia, T. cardiophylla, T. discolor,
T. fimbripetala, T. gracilis, T. heterophylla, T. inaequalis, T. maranhamensis, T. megalantha,
T. mexicana, T. microphylla, T. mucronata, T. natans, T. oleifolia, T. pusilla, T. ramiflora,
T. salicifolia, T. schiedeana, T. seleriana, T. styloptera, T. tinifolia, T. vacciniifolia