Comprehensive Description

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Northern Catalpa is one of two species in this genus that occur in Illinois -- the other species, Catalpa bignonioides (Southern Catalpa), is native to a fairly small region of southeastern United States, but not Illinois. This latter species is also cultivated throughout the state as a landscape tree and it occasionally escapes. Distinguishing these two species is rather difficult as they both have similar leaves, flowers, and seedpods. The following characteristics can be used to distinguish Northern Catalpa from its more southern sibling


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© John Hilty

Source: Illinois Wildflowers


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