The plant is a beautiful herbaceous biennial or perennial with tufted basal leaves and single,
erect, leafy stem which bears a spike or purplish flowers. Digitalis is from the Latin digitalis,
meaning a finger, and refers to the finger-shaped corolla.
Digitalis leaves have ovate or ovate-lanceolate lamina, 10-35 cm in length. Apex obtuse or
rounded, base tapering into a winged petiole margin dentate or crenate; upper surface dark green,
minutely, somewhat wrinkled, under surface grayish green: midrib grayish brown. The leaves are
collected from July to September, from both the first and second year plants.
Fresh and full-grown leaves are carefully and quickly dried for use as the source of the drug.
Digitalis is a heart stimulant of the greatest importance because of its powerful action and it
is specific for some types of heart disease.
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