Leuce,1932 a plant resembling mercurialis,1933 has received its name1934 from the circumstance that a white line runs through the middle of the leaf; for which reason also, some give it the name of “mesoleucon.”1935 The juice of this plant is curative of fistula, and the plant itself, bruised, is good for carcinomata. It is probably the same plant as that called “leucas,” so remarkably efficacious for the venom of all kinds of marine animals. Authors have not given a description of it, beyond telling us that the wild leucas has larger leaves than the other, and has properties more strongly developed: they state also that the seed of the cultivated kind is the more acrid of the two.