Dictamnus dasycarpus

Dictamnus dasycarpus (Rutaceae) is an erect perennial herb 50-100 cm tall growing from a stout, fleshy, aromatic taproot with a thick whitish root bark. Stems are sparsely branched and densely glandular-pubescent in the upper parts. Leaves are alternate, odd-pinnate with 9-13 ovate to elliptic leaflets that are finely serrate and dotted with translucent oil glands, releasing a strong citrus-balsamic scent when crushed. Flowers are showy, 2-3 cm across, borne in elongated terminal racemes; the five petals are pink to rose-purple with darker veins, and the long curved stamens project conspicuously. Glands on the inflorescence axis exude a volatile oil flammable in still summer air, hence the common name "burning bush" or "gas plant." The capsular fruit splits into five woody mericarps shedding shiny black seeds. Native to dry slopes and forest margins across northern China, Mongolia, Korea, the Russian Far East, and adjacent areas.