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Antopetitia
Cotyledon, embryo, and testa: A. abyssinica A. Richard - embryo, cotyledons, and testa SEMs.
Aotus
Fruit and seed: A. spp. - fruits (closed and dehisced) with calyx and seeds.
Aotus
Cotyledon, embryo, and testa: A. ericoides (É.P. Ventenat) G. Don - embryo, cotyledons, and testa SEMs.
Aphanocaylx
Fruit and seed: A. cynometroides D. Oliver - right seed in situ and bottom left enrolled valve; A. margininervius J.J.G. Léonard - top fruit.

Aphanocaylx
Seed, cotyledon, embryo, and testa: A. cynometroides D. Oliver - left seeds and testa SEMs; A. microphyllus (H.A.T. Harms) J.J. Wieringa - right seeds.
Aphanocaylx
Fruit and seed: A. heitzii (F. Pellegrin) J.J. Wieringa - lower right fruit; A. richardsiae (J.J.G. Léonard) J.J. Wieringa - lower left and upper center fruits; A. trapnellii (J.J.G. Léonard) J.J. Wieringa - upper left and right fruits.
Aphyllodium
Fruit and seed: A. biarticulatum (C. Linnaeus) F. Gagnepain - fruits (1- and 2-seeded; 1-seeded with calyx and petal) and seeds.
Aphyllodium
Cotyledon, embryo, and testa: A. biarticulatum (C. Linnaeus) F. Gagnepain - embryo, cotyledons, and testa SEMs.

Apios
Fruit and seed: A. americana F.K. Medikus - fruits; A. spp. - seeds.
Apios
Cotyledon, embryo, and testa: A. americana F.K. Medikus - embryo, cotyledons, and testa SEMs.
Apoplanesia
Fruit and seed: A. paniculata C.B. Presl - fruits with star-shaped calyx, seeds, and hilum-lens view magnification.
Apoplanesia
Cotyledon, embryo, and testa: A. paniculata C.B. Presl - embryo, cotyledons, and testa SEMs.

Apuleia
Seed, cotyledon, embryo, and testa: A. leiocarpa (J.R.T. Vogel) Macbride var. molaris - testa SEMs; A. leiocarpa (J.R.T. Vogel) Macbride var. unknown - bottom far left seed topography, top left cotyledon cordate partially investing exposed radicle (L) and embryonic axis (R); A. leiocarpa (J.R.T. Vogel) Macbride vars. mixed - bottom left center seeds.
Apuleia
Fruit and seed: A. leiocarpa (J.R.T. Vogel) Macbride var. leiocarpa - top fruit cluster; A. leiocarpa (J.R.T. Vogel) Macbride var. molaris - bottom right center fruit cluster, left center fruit; A. leiocarpa (J.R.T. Vogel) Macbride var. unknown - far right fruit cluster, bottom left center seed in situ
Apurimacia
Fruit and seed: A. spp. - fruits and seeds.
Apurimacia
Cotyledon, embryo, and testa: A. michelii (H.H. Rusby) H.A.T. Harms - embryo, cotyledons, and testa SEMs.

Arachis
Fruit and seed: A. spp. - fruits, valve, and seeds.
Arachis
Cotyledon, embryo, and testa: A. hypogaea C. Linnaeus - embryo, cotyledons, and testa SEMs.
Arapatiella
Fruit and seed: A. psilophylla (H.A.T. Harms) R.S. Cowan - bottom fruits, top seed in situ.
Arapatiella
Seed, cotyledon, embryo, and testa: A. psilophylla (H.A.T. Harms) R.S. Cowan - top left cotyledon auriculate over radicle (L) and embryonic axis (R), bottom far left seed topography, bottom left center seeds, testa SEMs.