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100 200 300 KILOMETERS 



I 



Map 37.— Castanea dentata (Marsh.) Borkh., American chestnut. Map 38.— Castanea pumila Mill., Allegheny chinkapin. Map 39.— 

 Catalpa bignonioides Walt., southern catalpa. Map 40.— Celtis laevigata Willd., sugarberry. Map 41.— Celtis tenuifolia Nutt., Georgia 

 hackberry. Map 42. — Cephalanthus occidentalis L., buttonbush. 



