Doctorbush is a multipurpose medicinal herb of family Plumbaginaceae. It is native to South Asia and is distributed throughout most of the tropics and subtropics. It grows in deciduous woodland, savannas and scrublands from sea level upto 2000 meters altitude. In India, it is widely distributed from Central India to West Bengal, Southern India Maharashtra.
Doctorbush is a perennial herb which attains the height of 0.5-2 m (1.6-6.6 ft). Leaves are simple, alternate, elliptical or oblong, ovate-lanceolate measuring 0.5–12 cm long with a tapered base and hairy margin. Stipules are absent and petioles are 0–5 mm long, narrow with small auricles in young leaves. Inflorescence is of terminal raceme type, many flowered and about 6-30 cm long. The white flowers borne in axillary and terminal elongated spikes. Usually the flowers are regular, bisexual, sweet scented, pedicellate and pentamerous. Flowers have tubular calyx measuring 7-11 mm long and 5-ribbed having glandular trichomes which secrete a sticky mucilage. The flower blooms year round and pollination occurs by insects. Flowers are followed by oblong, five furrowed, capsule which is 7.5–8 mm long that contains single seed. Seeds are oblong, reddish-brown to dark brown measuring 5-6 mm long. Roots are smooth, straight, unbranched or branched and about 30 cm long and 6 cm in diameter. It is light yellow when fresh and turns reddish-brown on drying.
Roots
Roots are stout, friable, cylindrical, blackish red about 30 cm or more in length. It is yellow colored when fresh and reddish brown when dry, slightly branched or straight unbranched. Roots impart strong, characteristic odor with bitter and acrid taste.
Stems
Stems are spreading, somewhat woody, striate, terate and glabous. It is about 0.5-2 m (1.6-6.6 ft). The bark is thin and brown.
Leaves
Leaves are simple, alternate, ovate or oblong, about 8 cm long and 3 cm broad. Petioles are narrow and amplexicaul at the base and dilated into stipule like auricles.
Flowers
Flowers are white, about 10-25 cm long, inbracteate, axillary or terminal elongated spikes and bisexual. Calyx is covered with sticky and stalked glands. Corolla is white, slender and tubular.
Fruit
It is oblong, five furrowed capsule that contains single seed. Seeds are oblong, 5-6 mm long and reddish- brown to dark brown.