单叶紫堇 dan ye zi jin

Herbs, perennial. Rootstock ca. 6 cm × 4-7 mm, branched below. Stems few, underground part 3-4 cm, with 2-4 amplexicaul lanceolate or ovate scales 5-8 mm; aerial part 10-17 cm, branched, with 3 or 4 leaves crowded at base. Leaves simple; petiole 4-8 cm; blade glaucous abaxially, green adaxially, nearly orbicular, 1.2-4 × 1-4.3 cm, fleshy, glabrous, base cordate, margin entire. Racemes 3-6-flowered, condensed; peduncle 10-16 cm; bracts obovate or oblanceolate, 5-10 × ca. 3 mm. Pedicel 1-1.5 cm, slender. Flowers light blue, inner petals white. Sepals persistent, ovate, ca. 1 mm, dentate, acute. Outer petals with broad obtuse limb, ecristate; upper petal ca. 24 mm; spur straight or slightly curved, cylindric, 11-13 mm, obtuse; nectary 6-8 mm; lower petal ca. 13 mm, base shallowly saccate, limb extended beyond upper petal; inner petals 9-10 mm. Stigma slightly broader than long with 8 prominent papillae, lowermost pair geminate. Capsule elliptic to lanceolate, 10-15 × ca. 3 mm, ca. 10-seeded; style ca. 2 mm. Fl. and fr. Jun.

● Sandy marshes; 3600-3700 m. E Xizang (Bomi).