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Annual herb, rather wiry and much branched, up to 6 dm. tall, glabrous or with small scattered glandular hairs.. Leaves petiolate, 3-foliolate; leaflets linear, narrowly elliptic or lanceolate, 12–50 mm. long, 1–18 mm. wide, glabrous or with small scattered bristly hairs, especially on the margins; petiole 2–7 cm. long.. Inflorescence up to 30 cm. or more long, with the flowers rather crowded at the top and the rhachis rapidly elongating in fruit; bracts minute, subulate, somewhat membranous, caducous.. Sepals linear-subulate, up to 5 mm. long, with a blackish-red fragile apex.. Petals 7–14 mm. long, pink or mauve, the upper pair often yellow-spotted.. Stamens ± 9.. Gynophore 3–4(–14) mm. long.. Capsules 4.5–10 cm. long, glabrous.. Seeds ±1.5 mm. in diameter with fine longitudinal striations and low transverse ridges.. Fig. 2/13, p. 10.
A herb. It grows each year from seeds. The leaves have 3 leaflets. The leaflets are more than 2 mm wide. The leaf stalks are long. The flowers are in groups at the ends of stalks. The flowers are mauve with purple markings. The fruit capsule is 7-10 mm long.
Leaves 3-foliolate; leaflets 1–6.5 x 0.05–2.5 cm., linear, narrowly lanceolate or narrowly ovate, acuminate at the apex, cuneate at the base, sparsely and minutely asperulous at least on the margins; petiole up to 6.5 cm. long, glabrous.
Petals mauve, the two upper ones with a bright yellow spot surrounded by a short, dark purple line, 8–14 x 1.5–2.5 mm.; lamina narrowly elliptic-oblong, acute or rather blunt, basal claw almost as long as the lamina.
Erect annual herb, up to 400 mm tall. Leaves 3-foliolate. Two upper petals with bright yellow median spot surrounded by dark purple line. Stamens fertile, sube-qual, borne on short receptacle. Flowers mauve.
Stamens 6–12, all fertile though some have smaller anthers; filaments slender, rather unequal, the longer at length slightly exceeding the petals; anther-thecae up to 2 mm. long, linear-oblong.
Capsule 4–9 x 0.15–0.2 cm., on a glabrous gynophore up to 1.3 cm. long; valves linear, tapering to both ends, glabrous, with about 3 longitudinal nerves; persistent style 2–4 mm. long.
Inflorescence of moderately dense terminal racemes, rapidly elongating in fruit; bracts c. 1 mm. long, caducous, subulate; pedicels up to 4 mm. long, glandular-puberulous, slender.
Sepals purplish at the tips, up to 5 mm. long, linear-subulate, unequal, glabrous or sparsely setulose on the keel and margins.
Erect, branching, annual herb to 0.6 m. tall; stems striate, glabrous or very sparsely glandular-puberulous when very young.
Ovary linear, glabrous, on a gynophore c. 1.5 mm. long; style 0.5 mm. long; stigma capitate.
Seeds c. 1.5 mm. in diam., brown, transversely ridged.
