Managed forests, plantations and orchards Oviedo Prieto and González-Oliva (2015).Flora of China Editorial Committee (2018).Seeds 1-4 per legume ( Flora of China Editorial Committee, 2018). 0.5 mm wide wing, adaxial suture with a ca. Legume oblong, 3.5-8 × 1.7-2 cm, compressed, pubescent when young, glabrescent abaxial suture with a ca. Corolla pink to whitish, 1.5-1.8 cm standard suborbicular, 1.2-1.5 cm wide, outside brown pubescent, apex emarginate. Pseudoracemes axillary, 15-25 cm, rachis densely pubescent rachis nodes with 3 or 4 flowers fascicled on short branchlets peduncle 8-12 cm or much longer, densely pubescent. Leaves 9-13-foliolate rachis 20-35 cm, including petiole 4-8 cm leaflet blades oblong, obovate-oblong, or oblanceolate, 6-15 × 2-4 cm, thickly papery, abaxially greenish white and finely brown sericeous, adaxially glabrous or only pubescent along veins, base cuneate to broadly cuneate, apex shortly obtusely acuminate. Branches glabrous when old, scattered with brown lenticels. Young branchlets, leaf rachises, petioles, and petiolules densely brown pubescent. Previously, Paraderris was considered a different taxon, but it appears to be nested within Derris and, in order to maintain the monophyly of the genus, Paraderris is now synonymized with Derris ( Sirichamorn et al., 2012 Sirichamorn et al., 2014). malaccensis are often cultivated and many cultivated varieties have been selected (de Padua et al., 1999).

Currently, Derris comprises about 85 species found throughout the Old World tropics with species occurring in South-East Asia, Australia and Africa ( Sirichamorn et al., 2012). Only the liana habit and the two-winged pods are synapomorphies of Derris species. The genus Derris lacks distinct morphological characters, and its circumscription has been based on a combination of plesiomorphic characters (i.e., adnate wing and keel petals, monadelphous stamens and absent or annular floral discs). The genus Derris is a problematic taxon within the tribe Millettieae, because of the various and dissimilar generic circumscriptions proposed by different authors.

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