Warty

a warty leaf

“Well that sounds like a good way; but that ain’t the way Bob Tanner done.” “No, sir, you can bet he didn’t, becuz he’s the wartiest boy in this town; and he wouldn’t have a wart on him if he’d knowed how to work spunk-water.[…]”

Strictly speaking, the term toad should be restricted to members of the family Bufonidae, of which the common European and natterjack toads are good examples. But common parlance has seen the name applied to any warty tail-less amphibian.

a warty excrescence