Perennial herb up to 150 mm high; branching at the top, the basal organ a swollen above ground caudex, 30-40 mm in diam., with underground numerous thin fusiform roots. Leaves very variable in shape and size, up to 60 mm long, 20 mm wide, sub-entire, strongly sinuate, usually with 4 pairs of lateral veins. Flowers pale yellow with throat slightly darker yellow; corolla tube cylindrical, 25-28 mm long; limb ±30 mm in diam., up to 4x the diam. of the throat; lobes sub-equal, oblate. Fruit usually rotund to circular in lateral view, 18 mm long, 15 mm wide; beak indistinct, 1 mm wide; wings of the two sides of the fruit not contiguous at the base of the fruit, hence base distinctly cordate. Seeds 1 in each locule.
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