Delphinium tangkulaense W. T. Wang

Stem 4.8--10 cm tall, puberulent, simple or 1-branched. Leaf blade 1--4 cm wide, base deeply cordate; primary lobes separate for at least 90% of blade radius; central lobe flabellate-rhombic, 3-cleft, distally few lobulate or few dentate, apex acute; ultimate lobules narrowly ovate or lanceolate-linear; proximal leaves usually not withered. Flower solitary, terminal, nearly closed; pedicel 3--4 cm, puberulent, sometimes with yellow, glandular hairs; bracteoles borne near middle of pedicel, lanceolate, 7--9 mm. Sepals blue-purple, sometimes yellow, abaxially puberulent; spur cylindric or cylindric-subulate, 1--1.3 cm, base ca. 3.5 mm in diam.; other sepals 1.6--2.7 cm. Petals 2-lobed, pilose. Staminode limb trapezoid, 2-cleft, yellow barbate. Filaments glabrous. Carpels 3; ovaries puberulent. Fl. Jul--Aug. 2n = 16*.

SW Qinghai, N Xizang.

* Slopes, sandy lake banks; 4700--5500 m.

Delphinium chrysotrichum Finet & Gagnepain var. pygmaeum Ostenfeld; D. tangkulaense f. xanthanthum W. T. Wang & S. K. Wu.