Aristolochia tomentosa

A rare plant in Indiana, growing naturally only in the extreme SW corner of the state. I've only seen it in cultivation.

An opening flower at the Botany Experimental Field on the north side of Bloomington, 5/9/04.

A fully-open flower at the Botany Experimental Field, 5/9/04.

Young leaves at the Botany Experimental Field, 5/6/04.

Closer view of a flower at the B.E.F., 5/9/04.