Dinizia Ducke (1922: 76)

G. P. Lewis, G. S. Siqueira, H. Banks & A. Bruneau, 2017, The majestic canopy-emergent genus Dinizia (Leguminosae: Caesalpinioideae), including a new species endemic to the Brazilian state of Espírito Santo, Kew Bulletin 72, pp. 1-12 : 3

publication ID

https://doi.org/ 10.1007/S12225-017-9720-7



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scientific name

Dinizia Ducke (1922: 76)


Dinizia Ducke (1922: 76) .

Large forest canopy-emergent trees, buttressed or not, bark breaking off in large woody plates. Leaves bipinnate, eglandular, the pinnae alternate to subopposite, leaf and pinnae rachises caniculate along upper margin; leaflets alternate, glabrous or the lower surface puberulent to glabrescent. Inflorescence a compound raceme; flowers hermaphrodite or functionally male, a nectarial ring at the base of the hypanthium surrounding the centrally placed ovary stipe; petals 5, free, imbricate, attached around the upper rim of the hypanthium; the outer surface of the hypanthium, calyx tube and corolla puberulent, the calyx and corolla lobe margins ciliate; stamens 10, free, glabrous, the filaments inserted around the hypanthium rim, anthers eglandular, dorsally fixed; ovary glabrous to pubescent on its lateral faces, style glabrous, stigma terminal, tubular to slightly funnelshaped. Fruit coriaceous to woody, indehiscent or dehiscent along both sutures, seeds laterally compressed, hard, pleurogram lacking, pollen in monads or tetrads. Type: Dinizia excelsa Ducke.

Key to the species of Dinizia

Leaflets in 7 – 14 pairs per pinna, puberulent to glabrescent on their lower surface; individual inflorescence rachis (10 –) 12.5 – 16 cm long, 1 – 1.5 (– 2) cm wide in open flower; buds ellipsoid to obovoid, the calyx completely covering the petals; bracts lanceolate, persistent to caducous; flowers 4 – 5 mm long; fruits coriaceous, indehiscent, red when immature; seeds (1 0 –) 1 4 – 15 × 6 – 7 mm; pollen in tetrads; Am a zonia n ra in for est in Br a zil a nd the Guianas……………………………………… D. excelsa Leaflets in (9 –) 15 – 24 pairs per pinna, glabrous on both surfaces; inflorescence rachis 28 – 35 cm long, 3 – 4.5 cm wide in open flower; buds globose, the petals exposed early in development; bracts spathulate, caducous; flowers 8.5 – 10 mm long; fruits woody, dehiscent, yellowish cream or greenish when immature; seeds 25 – 30 × 16 – 19 mm; pollen in monads; Atlantic rain forest…………………… D. jueirana -facao