Diascia dissimulans Hilliard & B.L.Burtt

Annual herb, main stem up to 450 mm tall, 1-2.25 mm diam., simple or branching near the base, weak, glabrous or glandular-pubescent, or hairs confined to the inflorescence axes. Leaves in 3-4 pairs on each branch, c. 8-25 x 6-22 mm, ovate, apex acute or subacute, base subcordate, margins subentire to sharply serrate, glabrous except for a few glandular hairs on the lower margins and main veins below; petioles up to 20 mm long, decreasing rapidly in length upwards, uppermost leaves subsessile, glandular-pubescent. Flowers many, in terminal racemes, simple or loosely panicled; lowermost bract leaf-like, c. 9 x 7 mm, the upper ones smaller, cordate-ovate, very acute to acuminate, lower surface glandular-pubescent; pedicels c. 10-15 mm long, filiform, glandular-pubescent, patent or deflexed, the tips abruptly upcurved. Calyx segments lanceolate, acute, anticous pair 2.75-3 x 1-1.25 mm, three posticous ones slightly smaller, glandular-pubescent, hairs sometimes ±confined to lower half. Corolla tube 3-4 mm long, invaginated then partly turned out again; two lateral spurs 2-3 mm long, slightly curved inwards, with dark sessile glands inside on the outer face; limb c. 10-14 x 9-12 mm, anticous lobe 5-8 x 5-8 mm, two lateral lobes 3-4 x 3.75-5 mm, two posticous lobes 3-3.5 x 2 mm, fused nearly to the apex, all ± oblong, violet-blue, glabrous outside, inside with two patches of dark sessile glands laterally placed at the base of the anticous lobe, and similar glands around the two upper lateral sinuses; “window” shallowly concave with two lateral elliptic yellow patches flanked with red-purple. Stamens projecting forward, filaments of anticous pair 2 mm long, those of posticous pair c. 3.25 mm long, branched about halfway and bearing the fully fertile anthers horizontally on the upper branch, all filaments glandular-puberulous, hairs sometimes sparse, anthers c. 0.3 mm long, cohering strongly. Ovary 1.5-2 x 1 mm, style 1-1.25 mm, ovules many in each loculus; stigma capitate, lying between the anthers. Capsules 12-18 x 2.25-3 mm, linear; seeds 1 mm long, curved, narrowly winged and ridged.