dhattura :
Morphology:
The genus Datura, belonging to the family solanaceae, consists of annual and
perennial herbs, shrubs and trees. Three species,viz, Datura metel Linn., D. stramonium
Linn. and D. innoxia Mill. are medicinally important. D. innoxia mill. and D. metel Linn.
(var. alba, and var, fastuosa) are the choice drug plants, rich in hyoscine. D. metel Linn. is
the most common in India. The names, D. metel Linn., D. fastuosa Linn., D. alba Nees., D.
fastuosa Linn. var. alba (Nees) C.B. Clarke and D. metel Linn. var. fastuosa (Linn.) Safford
are synonymously used by many workers. Two varieties are often noted in D. metel Linn.,
namely the white flowered var. alba and purple flowered var. fastuosa. D. metel Linn. is an
erect succulent branched undershrub divaricate often purplish branches and ovate pubescent
leaves which are oblique at the base of lamina. Flowers are large, solitary, short pedicelled,
purplish outside and white inside. Fruits are sub-globose capsules covered all over with
numerous, fleshy prickles, irregularly breaking when mature. Seeds are numerous, smooth,
yellowish brown. (warrier et al, 1994).
