Herbs, perennial, caespitose, dark green, 15-35(-50) cm tall, glabrous or finely papillose-puberulent at base. Rootstock ± vertical, elongate, thick, fibrous, multistranded, with 1 or several heads, densely crowned by membranous remnants of old leaf sheaths and cataphylls. Stems 1 to few from radical leaf axils, erect, without leaves or with 1 or usually 2 opposite leaves below middle. Radical leaves many; petiole 5-10 cm, base vaginate; blade ovate to triangular-ovate, 6-14 × 3-7 cm, bi-(tri-)pinnate; pinnae 4 or 5 pairs, shortly petiolulate; pinnules 3-5, sessile, deeply divided; ultimate lobes oblong to lanceolate, obtuse to acute, ± mucronate. Cauline leaves usually much smaller, vaginate. Raceme 5-15 cm, densely 10-25(-35)-flowered; bracts oblong, (1-)1.5-3(-4) × 0.5-1 cm, cuneate, pinnatipartite, upper ones smaller and less divided or entire, all longer than pedicels. Pedicel 1-2(-3) cm, at fruiting arcuately recurved. Sepals whitish, 0.5-2 × 0.5-1.5 mm, deeply dentate. Corolla yellow; outer petals with rhombic-acute limb, crest 0.5-1.5 mm wide, shortly decurrent, not reaching spur; upper petal 17-25 mm; spur tapering, 8-12 mm; nectary extended through ca. 1/2 of spur; inner petals 9-11 mm, claw slightly shorter than limb. Stigma square, apex slightly emarginate, apical papillae distinct or often confluent, laterally and on basal lobes with geminate papillae. Capsule obovoid, 10-15 × 3-4 mm, 4-8-seeded. Seeds in 2 rows, 1.5-2 mm, smooth. Fl. and fr. Jun.
Home