A tree from the United States of America where it is found in open forests. It is also planted there for the production of, among other things, telephone poles. The crown is more upright than C. bignonioides which makes it wider applicable. The bark is grey brown and peels in long, narrow plates, the twigs break easily and turn from olive green to grey. The acuminate and entire, heart-shaped leaf is dull dark green, appears late in spring and is shed relatively early. It is thicker than of C. bignonioides and hardly emits the smell that is so characteristic for other varieties. The inflorescence is less profuse than of C. bignonioides, but the flowers are between themselves slightly bigger, to circa 6 cm. They are white and have purple and orange spots. The slender capsules are remarkably long.