UW Burke Herbarium species comparison

Leaves basal and cauline, basal leaves occasionally deciduous by flowering;

petioles 3-5 mm from base to mid-stem, becoming sessile and nearly clasping to perfoliate distally;

blade commonly somewhat purple, narrowly ovate to ovate to elliptic to nearly orbicular, 10-35 mm long and 3-25 mm broad, palmate venation with 3-5 veins, base rounded to wedge or nearly heart-shaped, margins more or less crenate or nearly serrate with 5-10 teeth per side, basal and lower cauline leaves irregularly incised near base becoming nearly lyrate;

apex acute to obtuse-rounded, surfaces glabrous or with sparse to moderate coverage of small rigid hairs, eglandular.

Leaves opposite, small and rather numerous, linear to narrowly oblong, mostly sessile and entire, 1- to 3-nerved from the base, up to 2 cm. long.

Axillary flowers 1-8, emerging from nodes towards ends of stems; fruiting pedicels 8-30 mm, hairy-glandular as stems;

calyx nodding at 30-90 degrees, occasionally somewhat reddish or red-dotted, ovoid-campanulate to widely cylindric-campanulate, inflated, compressed across sagittal plane, usually 9-16 mm, hirtellous or glabrous, throat closing weakly or strongly;

corollas yellow to dark yellow to orangish yellow, typically with red spots, lower limb occasionally with large red splotch, symmetric bilaterally, bilabiate;

tube-throat widely funnel-shaped, 8-16 mm, protruding 2-6 mm beyond calyx margin;

limb expanded 8-25 mm, palate villous;

styles slightly hirtellous;

anthers not protruding, glabrous.

Flowers solitary in the leaf axils on pedicels under 1 cm. long, spreading and up-turned at the tip;

calyx glandular-puberulent, 3-5 mm. long, the 5 short teeth rounded;

corolla yellow, faintly spotted, 4-8 mm. long, only slightly bilabiate, the 5 lobes equal, notched at the tip, the throat narrow, under 2 mm. wide;

style longer than the calyx;

stamens 4.

Capsules 6-9 mm, included.

Capsule.