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FOC | Family List | FOC Vol. 17 | Lamiaceae | Dracocephalum

4. Dracocephalum tanguticum Maximowicz, Bull. Acad. Imp. Sci. Saint-Pétersbourg. ser. 3, 27:530. 1881.

甘青青兰 gan qing qing lan

Dracocephalum tanguticum

Credit: Harvard University Herbaria

Herbs perennial, fetid. Stems erect, to 55 cm, obtusely 4-angled, retrorse pubescent toward apex, subglabrous basally, internodes 2.5-6 cm. Petiole 3-8 mm; leaf blade pinnatisect, elliptic-ovate to elliptic, 2.6-4(-7.5) × 1.4-2.5(-4.2) cm, base broadly cuneate, adaxially glabrous, abaxially glabrous to densely gray pubescent; segments in 2 or 3 pairs, linear, 0.7-1.9(-3) cm × 1-2(-3) mm, ter-minal section 1.4-2.8(-4.4) cm, margin entire, involute. Verticillasters 2-6-flowered, in 5-9 upper stem nodes; floral leaves similar to cauline leaves but much reduced, with 1 pair of segments, 5-7 mm, pubescent, ciliate. Calyx purplish, 1-1.4 cm, densely spreading pubescent, golden glandular, split to 1/3 its length; teeth margin ciliate, apex acute; upper lip teeth broadly lanceolate, middle tooth subequal to lateral lobes, lower lip teeth lanceolate. Corolla purple-blue to dark purple, 2-2.7 cm, pubescent, lower lip 2 × as long as upper lip. Fl. Jun-Sep.

* Riverbanks, fields, grassy beaches, dry lake beds, sunny hillsides, pine forest margins; 3200-4700 m. Gansu, Qinghai, Sichuan, Xizang

1 Stems unbranched; leaves abaxially glabrous   4b var. nanum
+ Stems branched along entire length; leaves abaxially densely hairy.   (2)
2 (1) Stems 35-55 cm; leaves abaxially gray pubescent   4a var. tanguticum
+ Stems less than 35 cm; leaves abaxially gray tomentulose   4c var. cinereum

Lower Taxa


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