UW Burke Herbarium species comparison

Leaves cauline, basal ones not persistent;

petioles 8-25 mm;

blade deltate or somewhat ovate to lanceolate, approximately 4-12 mm long and 3-10 mm broad, palmate venation with 3 veins, base rounded to cuneate-truncate, margins usually finely toothed, apex acute to obtuse, surfaces glabrous as stems.

Leaves opposite, soft and often somewhat succulent, the blades from quite small to nearly 1 dm. long, irregularly dentate, ovate to reniform-cordate;

leaves nearly palmately veined, the 3-7 main veins arising near the base; lower leaves petiolate, becoming sessile upward, those of the inflorescence reduced and clasping.

Axillary flowers 1-10, emerging from nodes throughout; fruiting pedicels 10-25 mm, glandular as stems;

calyx tubular, barely or not inflated, 5-6 mm, margins with distinct teeth or lobes, slightly stipitate-glandular to sparsely hirtellous, lobes pronounced, erect;

corollas yellow, lower limb commonly with some red or brownish dots, symmetric radially or bilaterally, regular or weakly bilabiate;

tube-throat funnel-shaped, 7-8 mm, protruding beyond calyx margin;

lobes oblong, apex rounded to truncate;

styles glabrous;

anthers not protruding, glabrous.

Flowers several to many in terminal racemes, on long pedicels, or solitary in dwarf forms;

calyx 5-toothed, irregular, the upper tooth much the largest, the 2 lower ones tending to fold upward;

corolla 1-4 cm. long, strongly bilabiate, with flaring throat, yellow with maroon dots or splotches on the pubescent lower lip;

stamens 4.

Capsules 4-6 mm, included.

Capsule.