Delphinium nortonii Dunn

Post-publication: redescription (see Acta Phytotax. Sin. 42(1): 94. 2004): Herbs perennial, 7-12 cm tall, densely spreading puberulent, especially so above. Stems 1 to several. Leaves long petiolate; petiole 2-4 cm, base shortly vaginate; blade orbicular; radical leaves 2-3 cm long and broad, palmately 3-sect; segments flabellate, obviously imbricate, palmately incised into obtuse lobes. Cauline leaves few or even absent, similar to radical leaves but smaller. Flower solitary, terminal, large, violet, inflated-globose, long pubescent outside. Pedicel 4-5 cm; bracteoles near middle of pedicel, linear or palmatifid, 5-10 X 2-10 mm. Upper sepal broadly ovate, ca. 2.5 X 1.8 cm, apex obtuse; spur cylindric-subulate, 1.1-1.9 cm X 5-7 mm at base; lateral sepals asymmetrically elliptic-ovate, ca. 1.8 X 1.5 cm, apex subrounded; lower sepals elliptic, ca. 2 X 1 cm, apex broadly cuneate. Petals nearly straight; limb ca. 1.5 cm X 3 mm, somewhat emarginate at blunt apex, spur 1-1.4 cm. Staminode black-brown, bifid, yellow barbate. Filaments glabrous, 7-8 mm. Carpels 3; ovary densely velutinous. Fl. Jun.

Stem 12--22 cm tall, retrorsely puberulent, simple or 1-branched. Leaf blade 16--30 cm wide, base cordate; primary lobes separate for at least 90% of blade radius; central lobe linear and undivided, or rhombic and 3-parted nearly to midvein, distally undivided or 1- or 2-lobulate, apex acute; ultimate lobules linear-lanceolate or linear; proximal leaves usually withered. Flower solitary, terminal; pedicel 3--7 cm; bracteoles borne proximally or near middle of pedicel, linear, 0.9--2.5 cm. Sepals blue, abaxially puberulent; spur cylindric-subulate, 1.7--1.9 cm, base 3--4 mm in diam.; other sepals 1.7--1.8 cm. Petals emarginate, glabrous. Staminode limb elliptic-obovate, 2-cleft, yellowish barbate. Filaments pilose. Carpels 3; ovaries densely villous. Fl. Jul.

S Xizang [Nepal, Sikkim].

Alpine meadows; 4500--5000 m.

Delphinium caeruleum Jacquemont var. tenuicaule Brühl ex Huth; D. grandiflorum Linnaeus var. tenuicaule (Brühl ex Huth) Brühl.

Delphinium nortonii là một loài thực vật có hoa trong họ Mao lương. Loài này được Dunn mô tả khoa học đầu tiên năm 1927.

细茎翠雀花（学名：Delphinium nortonii）是毛茛科翠雀属的植物。分布在尼泊尔、锡金以及中国大陆的西藏等地，生长于海拔5,000米的地区，多生长在生林间草地，目前尚未由人工引种栽培。