UW Burke Herbarium species comparison

Leaves opposite, mostly sessile, the blade under 2.5 cm. long, elliptic to ovate, slightly reduced upward, with a few irregular teeth, sub-palmately veined.

Leaves mostly cauline, basal leaves generally not persistent by flowering;

petioles 1-3 mm near base, becoming sessile distally;

blade elliptic to lanceolate to narrowly ovate, 8-18 mm long and 3-7 mm broad, mostly evenly sized throughout or somewhat reduced distally, palmate venation with 3-5 veins, base attenuate to obtuse to rounded, margins entire to finely toothed, apex acute to obtuse, surfaces glandular as stems.

Flowers few, solitary in the leaf axils, on long pedicels;

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

corolla large for the size of the plant, 2-4 cm. long, strongly bilabiate, with flaring throat, yellow with maroon dots or splotches on the pubescent lower lip;

stamens 4.

Axillary flowers 10-20, emerging from mid- to ends of stems; fruiting pedicels not curved or bent, 7-18 mm, glandular as stems;

calyx winged, ridged, maturing to ovoid-ellipsoid to bell-shaped or widely urn-shaped, distinctly inflated, 7-11 mm, margins distinctly toothed or lobed, sparsely covered with minute and rigid hairs, eglandular, lobes pronounced, erect;

corollas yellow to light yellow, with sparse red dots or not, symmetric bilaterally, slightly bilabiate;

tube-throat cylindric, 5-8 mm, protruding 1-3 mm beyond calyx margin;

limb only slightly widened, lobes widely obovate, apex rounded to mucronate;

styles glabrous;

anthers not protruding, glabrous.

Capsule.

Capsules 5-9 mm, included.