bullated

The head, however, is broader in proportion to its depth, and more firm and solid; the leaves not connected with the head are more erect, of a firmer texture, not quite so smooth and polished, and the surface slightly bullated, or blistered.

The Field and Garden Vegetables of America Containing Full Descriptions of Nearly Eleven Hundred Species and Varietes; With Directions for Propagation, Culture and Use. Fearing Burr