- Perennial herb, from slender rhizomes, glabrescent or nearly so, the stems decumbent, 0.5-3 dm. tall, slightly stoloniferous. Leaf-blades ovate to oval or wider, acutish to usually obtuse, usually sinuately and saliently dentate, palmately veined, 1-3 cm. long, the lower rounded or truncate-cuneate to short petioles, the upper sessile; pedicels becoming 25-50 mm. long; calyx becoming 15-20 mm. long, strongly plicate-angled,its lobes acute, the lower shorter, the lowermost pair eventually upcurved toward the uppermost lobe which is 3-5 mm. long; corolla 25-35 mm. long, yellow, its throat ventrally deeper yellow, with 2 hairy and brown-spotted ridges joined distally into a palate that nearly or quite closes the orifice, lower lip with deflexed-spreading lobes, upper lip shorter and with ascending-erect lobes; anthers glabrous; stigmas slightly fimbriolate; capsule slightly stiped, 7-8 mm. long, not dehiscing through septum-apex.
Reference: Abrams and Furris