Plant morphology of Pinellia ternata

Pinellia ternata is a perennial herb with a height of 30 ~ 70 cm. Tubers are spherical, with purple-brown skin and many slender khaki fibrous roots on the upper part. The stem is fleshy, cylindrical, green and purplish red, with 2 bracts on it and purplish. Leaves 1, 3-lobed and 3-lobed, middle lobule broadly elliptic, apex short acuminate. The base is wedge-shaped, and the leaflets on both sides are oblong and oval, with different sizes on both sides of the base; Veins purple; Petiole is slender with purple spots. The bracts of spikes are purple-green, with deep purple stripes, and the top is tail-shaped. The appendage of the spike is filiform, thin and long, which is more than 2.5 times longer than the inflorescence.