Catalpa speciosa

Western catalpa is in the bignonia or Bignoniaceae family and is native to the midwestern United States. It is closely related to southern catalpa, and can be distinguished by:

• Its flowering panicles bear a smaller number of larger flowers.
• Seed pods are slightly broader.
• Leaves tend to be larger than those of C. bignoides, up to 40 cm long and 23 cm across.