CHÆROPHYLLUM, or CHERVIL, in botany, a genus of the pentandria digynia class. The involucre is concave and reflected; the petals are cordated; and the fruit is smooth and oblong. The species are seven, only two of which are natives of Britain, viz. the sylvestre, or wild cicely, or cow-weed; and the tumulans, or wild chervil. The leaves of the chervil are gently aperient and diuretic, and at the same time grateful to the palate and stomach.