Phyllotaxis, stipules, and petioles of Malpighiaceae A branch with opposite leaves of Bronwenia megaptera B branch with decussate leaves of Verrucularina glaucophylla C branch with alternate leaves of Stigmaphyllon angustilobum D branch with verticillate leaves of Pterandra pyroidea E interpetiolar stipules of Mascagnia cordifolia F epipetiolar stipules of Byrsonima intermedia G free stipules of Hiraea hatschbachii H connate stipules of Peixotoa catarinensis I transverse section of a circular petiole J transverse section of a plane-convex petiole K transverse section of a canaliculate petiole L leaf with very reduced petiole of Byrsonima basiloba M leaf with short petiole of Banisteriopsis adenopoda N leaf with long petiole of Stigmaphyllon caatingicola O alternate glands on the petiole of Banisteriopsis membranifolia P opposite to alternate glands on the petiole of Schwannia mediterranea Q subopposite glands on the petiole of Banisteriopsis membranifolia R discoid and sessile gland of Banisteriopsis laevifolia S cupuliform and stalked glands of Banisteriopsis adenopoda (line drawings and photographs A–C, G, I–K, L–O, Q–S by R.F. Almeida; D by C. Silva, E, F, H, P by M.O.O. Pellegrini).