| Description : | Herbs large. Rhizomes and roots stout. Stem sulcate, glabrous, pubescent only at nodes. Petiole of basal leaf equal to blade or slightly longer, pubescent; leaf blade ovate-elliptic or broadly ovate, large, abaxially pilose, basal veins 5-7, base cordate, margin entire, sinuolate, apex obtuse. Stem leaves ovate, narrow; ocrea large, pubescent, clasping. Panicle large, 2- or 3-branched, densely papilliferous. Pedicel muricate, jointed below middle. Perianth spreading, purple-red. Filaments subulate. Ovary rhomboid-obovoid; stigma oblate, muricate. Fruit ovoid-ellipsoid or broadly ellipsoid, base subcordate, apex retuse or not; wings purple-red wide; longitudinal veins near margin. Seeds ovoid. Fl. Jun-Jul, fr. Aug or later. |
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