Delphinium calthifolium Q. E. Yang & Y. Luo

Stem 25--40 cm tall, densely appressed puberulent, unbranched. Leaf blade 4--6 cm wide, base deeply cordate; primary lobes separate for less than 60% of blade radius; central lobe broadly rhombic, unlobed, distally dentate, apex acute; ultimate lobules broadly triangular or orbicular; proximal leaves not withered. Raceme 5--12 cm, 3--6-flowered, appressed white puberulent; proximal bracts 3--5-sect, distal ones undivided, lanceolate. Pedicels 2--5 cm; bracteoles distal, lanceolate, 2--5 mm. Sepals blue, abaxially appressed puberulent; spur subulate-cylindric, ca. 2.5 cm, slightly downcurved, base ca. 2.5 mm in diam.; other sepals 1.2--1.3 cm. Petals 2-lobed, glabrous. Staminode limb ovate, 2-cleft, yellow barbate. Filaments glabrous. Carpels 3; ovaries glabrous. Fl. and fr. Sep.

NC Sichuan (Beichuan Xian).

* Forests; ca. 2300 m.

Delphinium calthifolium, common name lu ti cao ye cui que hua, is a plant species endemic to Sichuan Province in China. It is known from only one location in forest at an elevation of about 2300 m.

Delphinium calthifolium is a perennial herb up to 40 cm tall with long white hairs. The plant generally has only 2 leaves, both cordate to round, sometimes slightly lobate, crenulate (scalloped) along the margins. Flowers are blue, about 3 cm long.

Delphinium calthifolium là một loài thực vật có hoa trong họ Mao lương. Loài này được Q.E.Yang, Y.Luo mô tả khoa học đầu tiên năm 2001.