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7. Dracocephalum hookeri C. B. Clarke ex J. D. Hooker, Fl. Brit. India. 4: 666. 1885.
长齿青兰 chang chi qing lan
Stems slightly scabrid. Leaves sessile, ca. 2.5 cm, pinnatisect, blade sections narrowly linear, few, spreading, margin involute. Verticillasters in dense spikes 5-8 × ca. 2.5 cm, interrupted basally; floral leaves pinnatisect. Flowers sessile. Calyx 1.3-1.9 cm, slightly scabrid, tube erect or curved; teeth equal, ca. as long as tube, lanceolate, apex acute. Corolla 2.5-4 cm, tube narrow, throat moderately dilated. Nutlets oblong, 2.5 mm, smooth.
* Hillsides; ca. 4500 m. Xizang
Only doubtfully different from Dracocephalum tanguticum and often reduced to synonymy.
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