Ranuncula

They proceed either singly from the wings of the leaves, or termination of the branches, as in pæony, globe ranunculus, marshmarigold, mouse-tail, fennel-flower, and some species of ranuncula and anemonie; or terminate the[…]

[...] and no one that I am acquainted with now makes use of it. It is a caustic difficult to manage, and presents no advantages over the others. Caustics derived from the vegetable kingdom, such as certain varieties of ranuncula, certain of the euphorbiaceæ, *colchicum root, &c., have been tried.