An erect herb, glabrous nearly throughout, glaucescent, annual, strictly erect, 20-23 cm [as '8-9 in.'] high, branched at the base or simple; branches few, slender; leaves mostly basal and rosulate, lanceolate or narrowly oval, obtuse at the apex, tapering towards the base, pinnatifid, membranous, pallid especially beneath, 0.5-1 in. long, 0.167-0.25 in. broad; lobes obtuse or apiculate; petioles 0.25-0.5 in. long; upper leaves few, alternate, successively smaller; peduncles slender, suberect or somewhat arching, 0.5-1.75 in. long, axillary and narrowly bracteate at the base, together arranged in terminal simple leafy quasi-racemes and occupying the upper half of the stems; calyx-segments ovate and lanceolate, more or less acute, minutely ciliolate with very short glandular hairs on the whitish margin, 0.083-0.167 in. long; corolla (exclusive of its spurs) about 0.25 in. broad, purple; spurs 0.6 in. long, rather slender, obtuse; filaments filiform, glabrous; anthers small, glabrous, converging; capsule ovoid, glabrous, 0.143-0.25 in. long.
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Annual, up to 390 mm tall. Leaves, obovate to elliptic, irregularly lobed or divided. Flowers with caudate to falciform-ovate, acuminate calyx lobes, corolla greyish rose to lilac (rarely white), limb 10-19.6 mm long, tube below sinus of upper and lateral lobes with a yellow, elliptical patch, spurs 5.5-20 mm long, acute to rounded, stamens projecting forward, ± straight, posterior filaments thickened or bent slightly backwards from near middle, glabrous except for tuft of purple trichomes at bend or thickening. Capsule ovoid, 5-6.8 mm long, equalling or exceeding calyx.