Proboscidea louisianica (Mill.) Thell.

A plant I know from cultivation in Indiana although it is widespread in much of the United States, including parts of the southwest. The distinction between this species and Proboscidea parviflora is not entirely clear to me.

A paler flower in Bloomington, IN, 4 Aug 2003.

A darker flower in Bloomington, IN, 4 Aug 2003.

A cauline leaf in Bloomington, IN, 4 Aug 2003.

Immature fruits in Bloomington, IN, 21 Aug 2003.