The leaves are strip-shaped, 22-50 cm long and 2-4 cm wide, with tapering tips, curled tails, tapering bases and no hair on both sides; Sessile or a false stalk, formed by tapering the base of the leaf blade; Dry heat and dispel cold, eliminate phlegm and stop malaria, strengthen spleen and warm stomach.
Used for chills and pains, fullness in chest and abdomen, intermittent phlegm and blood stasis, dyspepsia, vomiting and diarrhea.
It has appetizing effect and is often used as seasoning.