Shrub or small tree to 6 m. tall, branchlets pubescent, armed with stout prickles at the base of the petioles. Leaves ovate-orbicular, up to 6 cm. long and broad, pubescent to glabrous (especially above), rounded to truncate basally, cleft apically up to I/2 the length of the leaf, lobes rounded-obtuse; petioles short, pubescent, about 1 cm. long, callused at insertion of leaf; stipules linear. Inflorescence terminal, racemose, up to 25 cm. long. Flower large, greenish, up to 10 cm. long; calyx elongated spathaceous, tube about 1.5 cm. long; petals linear-elongated, up to 10? cm. long; fertile stamens 5, about 10 cm. long, with 5 smaller, narrower staminodes alternate with them; anthers linear, subbasally attached, sagittate basally, short-acuminate apically, about 2.5 cm. long or longer; ovary stipitate, pubescent; legume linear, compressed, long-stipitate, pubescent, up to 25 cm. long and 1.5 cm. wide.
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