Cat's ear grass is also called ten-calyx eggplant, blood sorrow, red silk thread, button grass, hairy medicine, wild flower hairy pepper, cedar seed, ten-calyx eggplant, double red silk thread, wild flower hairy spicy fruit and wild spicy eggplant.

Perennial herbs, 30~50 cm tall. Rhizomes are short and thick, obliquely ascending and densely covered with linear brown scales. Leaves are near-born; The petiole is 7~ 15 cm high, brown-black, shiny and covered with chaff scales; 1 pinnate compound leaf, 15~30 cm long and 3~4 cm wide; The pinnae on the top is the largest, and there are 7~ 14 pairs of pinnaes on both sides, which are alternate. The pinna is ovate to ovoid-oblong, entire, and the apex is obtuse. The middle feather is 2 ~ 2.5cm long and 7 ~12mm wide.

Medicinal properties of catnip

The rhizome is thick and short, and the linear scales grow densely; Fibrous roots are 15cm long, brownish black, curved, slender and tough. Petiole is 7~ 15cm long, brown to brown-black, shiny, covered with light brown scales, with more scales at the base; The leaves are thick and papery, odd pinnate, long 15~20cm, and wide 3~7cm. The pinnae at the apex is large, with 7~ 14 pairs on each side, and the pinnae at the lower part is nearly opposite, with a short stalk, and gradually becomes alternate and sessile.

The pinna is ovoid to rectangular ovoid, with a length of 1.5~2.5cm and a width of 5~ 12mm, all around, with coarse hairs on the upper midvein and dense hazel hairs on the back; The veins are fan-shaped, the cysts are nearly spherical, and they are attached along the lateral veins and are pilose. A slight breath, a pungent smell.