Branched annual or perennial herb to ±210 mm high, stems rectangular in cross-section, up to 2.7 mm on a side, glandular villous, lateral stems to ±230 mm long. Leaves simple, opposite, petiolate, lamina 9-45(-52) x 8-38(-47) mm, ovate to widely ovate, sparsely glandular villous, apex rounded to acute, base cuneate to cordate, margins regularly to irregularly dentate, glandular villous, teeth deltoid and mucronate, main veins prominent on lower surface and appearing sunken from above, petioles 7-26 mm long, glandular villous. Flowers axillary or in lax terminal racemes, racemes up to 270 mm long, only 1 or 2 flowers open at a time per branch or inflorescence; bracts alternate, lowermost leaf-like, uppermost reduced to ±3.0 x 1.9 mm, lanceolate to broadly ovate, base cuneate, apex acute to acuminate, margin entire or with a few teeth at base; pedicels ±10.5-13.0 mm long, glandular pubescent with short and long hairs, becoming strongly recurved just below capsule in fruit. Calyx 5-lobed, 3 upper lobes more or less equal, 3.9-4.3 X 0.8-1.1 mm, 2 lower lobes somewhat shorter and wider, 3.7-3.9 x 1.1-1.4 mm, all lobes lanceolate and glandular villous, especially at the base, hairs ±1 mm long. Corolla bilabiate, 6.4-10.6 x 7.0-9.1 mm, upper lip four-lobed, two inner (upper) lobes 1.8-3.4 x 1-6-2.2 mm, two outer (lateral) lobes somewhat wider, 1.8-3.5 x 1.9-2.7 mm, all lobes of upper lip ovate, rounded to acute, white with pink to red, fusiform markings at base which extend into tube, markings distinct to contiguous; lower lobe 3.8-6.6 x 4.4-6.4 mm, oblong to rectangular, emarginate, white, lower half personate, forming a palate that obscures opening of corolla and extends into interior of flower to form lower surface or floor of corolla; palate undulate, glabrous, greenish-yellow to orange both inside and outside; tube on upper surface or roof of corolla between staminal depression and sinus of two upper lobes 1.6-2.8 mm long, upper tube between filaments and spur entrance ±1.5-1.6 mm long, spur ±4.1-5.5 mm long, distal half deflexed, tip bifid, tube on floor of corolla at entrance to spur lacking bosses. Stamens white, lying in a depression in upper surface of corolla; depression 2.4-2.7 mm long, filaments of anticous pair (twisted into posticous position) 2.6-3.0 mm long, strongly curved at base and curving forward just below anthers, posticous filaments 1.2-1.4 mm long, all filaments with a few scattered glandular trichomes; anthers 0.6-0.7 mm long, in two pairs, each pair strongly coherent. Ovary 1.1-1.2 x 0.9-1.2 mm, oblong ovate in outline; ovules ±70; style 0.7-0.8 mm, curved at tip; lying between two anther pairs. Capsule (4.5-)5.8-7.5 x (3.7-) 4.4-5.3 mm, oblong, strongly compressed, apex truncate, base cuneate. Seeds 1.4-1.6 x 0.8-1.2 mm, elliptical in outline, winged, wings up to 0.4 mm wide, central embryo-containing portion of seed tuberculate.
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Annual or short-lived perennial, branched herb, up to 210 mm high; ± whole plant with long, fine, hairs. Leaves ovate to broadly so; dentate, teeth triangular. Flowers in axils of upper leaves or smaller bracts, forming lax racemes up to 270 mm long. Corolla: upper lobes ovate, white with red or pink streaks at base; palate glabrous, greenish yellow or orange. Spur extended conical, outer half bent downwards, apex bifid, ± 4.0-5.5 mm long. Flowering time Oct. Fruit an oblong capsule, up to 7.5 x 5.3 mm.
Softly glandular-hairy annual or short-lived perennial to 20 cm. Leaves opposite, broadly ovate, toothed, the lower petiolate. Flowers in racemes, white with red at base of upper lobes, lower lip with a raised, yellow, rugose palate, spur ± 4.5 mm long.
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