Elsholtzia penduliflora W. W. Sm.

Used medicinally.

Subshrubs aromatic, 1-2 m tall. Branchlets brown when dry, sparsely floccose-puberulent shiny glandular. Leaves oblong- or ovate-lanceolate, 6-18 × 1.6-4.3 cm, mem-branous, adaxially glabrous, finely dusty pilose on veins, abaxially glabrous, yellowish glandular, base attenuate, cuneate, or rounded and slightly oblique or cordate, margin serrulate, apex acuminate; main veins raised, reddish abaxially. Spikes terminal and axillary, 5-15 cm, pendulous; verticillasters sessile, 6-12-flowered, lower ones widely spaced; rachis ± white pilose; bracts linear to linear-oblong, ca. 2 × as long as pedicels. Pedicel 2-4 mm, ± pendulous, ± white pilose. Calyx campanulate, ca. 3 mm, densely glandular outside; teeth triangular-subulate, subequal or anterior 2 slightly shorter; fruiting calyx tubular-campanulate, to 5 × 2 mm. Corolla white, ca. 5.5 mm, subglabrous; tube ca. 3 mm, funnelform, to 2 mm wide at throat; upper lip ca. 1.5 mm, apex emarginate; middle lobe of lower lip subcircular, lateral lobes semicircular. Nutlets brown, oblong, ca. 1.25 mm, adaxially ribbed, glabrous. Fl. Sep-Nov, fr. Oct-Jan.

Yunnan

* Valleys, hills, waste areas, dense forests; 1100-2400 m.

Aphanochilus penduliflorus (W. Smith) Kudo.

Elsholtzia penduliflora (Vietnamese: chùa dù) is a species of flowering plant in the family Lamiaceae. It is native to Vietnam, and Yunnan in China, and has been introduced to Thailand. In Vietnam, E. penduliflora is claimed to be a medicinal herb good for colds and fevers. Essential oil from chùa dù can be used as a substitute for eucalyptus oil.