Herbs perennial, glabrous, 20--40 cm tall. Stems terete, finely glandular striate. Lower leaves scalelike. Upper leaves usually 2, unequal, ± at stem apex, subsessile, broadly ovate to ovate-elliptic, larger leaves 14--20 X 9--16 cm, smaller leaves 6--11 X 4--8.5 cm, base cordate, apex acute; basal veins 5--7, prominently reticulate. Racemes in axils of terminal leaves and lower scalelike leaves, 3--17-flowered; rachis 2--6 mm, glandular; bracts linear-triangular, 2--3 mm, minutely glandular, midvein raised abaxially. Pedicel 2.5--4 cm. Calyx lobes ovate, ca. 4 X 2 mm, apex acute. Corolla yellow, deeply parted; lobes oblong, 8--10 X 3--5 mm. Filaments connate basally into a ring, free parts ca. 1 mm; anthers 5--6 mm, basifixed, opening by apical pores. Capsule brown, globose, ca. 3 mm in diam. Fl. Jun-Jul.
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