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

34. Dracocephalum argunense Fischer ex Link, Enum. Hort. Berol. Alt. 2: 118. 1822.

光萼青兰 guang e qing lan

Dracocephalum ruyschiana Linnaeus var. argunense Nakai; D. ruyschiana Linnaeus var. speciosum Ledebour; D. speciosum Ledebour.

Stems numerous, erect, 35-57 cm, sparsely retrorse minute hairy toward apex, subglabrous toward base. Petiole 1/4-1/3 as long as blade, absent in apical leaves; basal leaf blade oblong-lanceolate, 2.2-4 × 0.5-0.6 cm; upper cauline blade lanceolate-linear, 4.5-6.8 × 0.3-0.6 cm, abaxially sparsely pubescent on veins or subglabrous, base cuneate, apex obtuse. Verticillasters in upper 2-4 nodes, ± crowded; floral leaves lanceolate to ovate-lanceolate; bracts green, elliptic to spatulate-obovate, 7-12 mm, apex acute, ciliate. Calyx 1.4-1.8 cm, densely retrorse minute hairy basally, subglabrous at apex, 2-lipped to ca. 1/2 its length; upper lip teeth divisions to 2/3 of lip, middle tooth lanceolate-ovate, slightly wider than lateral teeth; lateral teeth of upper lip lanceolate; lower lip teeth lanceolate, apex purplish, acute. Corolla blue-purple, 3.3-4 cm, pubescent. Fl. Jul-Aug.

Grassy slopes, grasslands, sandy and grassy riverbanks, thickets; 200-800 m. Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol [Korea, Russia].


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