root tuberous, edible; stems at first erect, then bending towards the ground and branching, pubescent; leaves sessile or nearly so, 1 1/2–3 in. long, 1/2– 7/8 in. broad, oblong, obtuse, minutely pubescent on both sides, cuneately narrowed at the base; racemes solitary or fasciculate, simple, 3/4–1 in. long, hairy; bracts 1 lin. long and broad, opposite, elliptic, obtuse, scabrous; pedicels 1–1 1/4 lin. long; flowering calyx 1 1/2–2 in. long, campanulate, scabrous with short stout hairs; upper tooth ovate, subotuse; other 4 teeth lanceolate, acute, subequal; corolla yellow, 7 lin. long; tube 3 lin. long, deflexed 1 lin. from the base, portion above the deflexion funnel-shaped; upper lip 2–2 1/2 lin. long, obovate, 4-lobed, 2 terminal lobes made by a triangular notch 1/2 lin. deep at the apex, rounded; lateral lobes small, oblong, obtuse; lower lip 3 1/2 lin. long, 1 lin. deep, boat-shaped, acute; upper pair of stamens 2 lin. long; lower pair 3 lin. long; style as long as the lower stamens; nutlets not seen. null
