Description from Flora of China
Cylindrokelupha Kostermans; Paralbizzia Kostermans.
Trees or shrubs, unarmed. Leaves bipinnate; stipules present or not; petiole, rachis, and pinnae with glands; pinnae in few pairs; leaflets few to several pairs, rarely in 1 pair. Inflorescence a globose head or arranged in panicle, terminal or axillary, or cauliflorous. Flowers white, small, bisexual or polygamous, uniform. Calyx campanulate or tubular, 5-toothed. Petals connate below middle; lobes 5. Stamens numerous; filaments exserted, united into a tube; anthers small, apex eglandular. Carpels 1 to several, free, sessile or stipitate, many ovuled; style filiform; stigma terminal, capitellate. Legume much curved or spirally twisted, or straight, cylindric, flat or swollen. Seeds ovoid or orbicular, without pleurogram.
About 100 species: tropical Asia; 16 species (three endemic) in China.