User:Thine Antique Pen/DJF

Dinizia jueirana-facao is a species of flowering plant in the family Fabaceae (legumes). Endemic to areas of the Atlantic Forest in Espírito Santo, Brazil, the species is considered Critically Endangered by the International Union for Conservation of Nature (IUCN) and there are less than 25 known adult specimens.

Description
Dinizia jueirana-facao is an emergent tree with a height of 19 to 40 m, branching after 10 to 22 m. The trunk is non-buttressed and can reach 1.56 m in diameter at breast height (DBH). Its bipinnate leaves are arranged alternate to spirally along the stems; these leaves are 35 to 96 cm long and exstipulate. The upper margin of the rachis is grooved, with grooving more prominent towards the leaf apex. There are 15–19 pairs of pinnae per leaf, arranged sub-opposite to alternately, and each is 9.5 to 15.5 cm long. Each pinna has 15–23 pairs of leaflets arranged sub-opposite to alternately. The leaflets are coriaceous (leathery) and glabrous (hairless).

The species has buds ellipsoid to obovoid in shape, with the margins of adjacent sepals touching without overlapping. The sepals spread into a symmetrical star shape and the calyx is campanulate (bell-shaped) and coriaceous when mature. The flowers are hermaphroditic and borne by large compound racemes found in pairs or larger groups, each 28 to 35 cm long; the racemes are supported by a rust-coloured peduncle, 15 to 30 cm in length. Each raceme bears hundreds of yellow flowers; these flowers are 8.5 to 10 mm long and attached to the racemes by their stalks. The petals are imbricated (regularly overlap) and are 5.5 to 7 mm long and 3 to 3.5 mm wide. D. jueirana-facao produces woody, scimitar-shaped fruits, coloured yellowish-cream to greenish before maturing to dark brown to black. They are 40 to 46 cm long and 8.5 to 10 cm wide and each contain 13–15 seeds.

Although shorter than D. excelsa, which stands at 30 to 60 m in height, D. jueirana-facao has longer racemes and flowers. Its pollen grains are found singly, rather than in tetrads, and are tricolporate. Its seeds are larger—25 to 30 mm by 16 to 19 mm compared to 14 to 15 mm by 6 to 7 mm—but they are black and hard in both species. The trunk of D. excelsa is buttressed.

todo

 * Bruneau et al. 2008, Babineau & Bruneau 2017, LPWG 2017, Manzanilla & Bruneau 2012
 * Burkart 1943
 * Ducke 1922
 * Sprent 2001 (Nodulation in Legumes)