Fruits enclosed in a pod or capsule
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Fruits enclosed in a long, narrow capsule, 10" to 20" long
Northern Catalpa

Fruits enclosed in a distinctive triangular, somewhat heart-shaped, papery pod, about 2" long
Goldenrain Tree

Fruits enclosed in a characteristic pod, 1" to 2" long, with four broad wings
Carolina Silverbell

Fruits in pod, not as above