UW Burke Herbarium species comparison

Leaves cauline, basal ones not persistent, commonly congested; subsessile to sessile;

blade oblong to lanceolate, 30-70 mm long and 10-22 mm broad, pinnate venation, base rounded, margins toothed to finely toothed, apex acute, surfaces hairy as stems.

Leaves opposite, broadly ovate to reniform-cordate, irregularly toothed, sub-palmately veined, the blade up to 2.5 cm. long, the petiole shorter.

Axillary flowers 4-10, emerging from nodes at mid- to ends of stems; fruiting pedicels generally 22-50 mm, hairy as stems;

calyx winged, cylindric-campanulate, barely inflated, 10-12 mm, villous with gland-tipped hairs, lobes spreading noticeably, strongly unequal, linear-lanceolate to slender-triangular, 5-9 mm, apex long acuminate-apiculate;

corollas yellow, throat faintly marked with blackish-brownish lines, symmetric almost radially or weakly bilaterally, nearly regular or weakly bilabiate;

tube-throat slenderly bell-shaped, 15-18 mm, protruding beyond calyx margin;

lobe apex rounded;

styles glabrous;

anthers not protruding, covered with fine hairs that are stiff to slightly rigid.

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

calyx glandular-villous, the 5 broad lobes 1-2 mm. long;

corolla yellow with red spots, 13-18 mm. long, 2-lipped;

stamens 4.

Capsules 6-8 mm, included.

Capsule.