Margin of leaf that curls under. Flower with corolla missing. Valvate L. Involucre M. Petiole N. Pome O. Perianth P. Stolon Q. Stipule R. Dioecious S. Polypetalous T. Polygamo-dioecious U. Dioecious V. Revolute W. Corolla X. Calyx Y. Terete Z. Anther Identify these trees by family, genus, species and common name. Fruit a capsule, flowers in aments. Leaves simple, triangular, margin coarsely toothed, petioles flattened.
Buds have yellow resin.
Often found near riparian and boggy areas. Tree of eastern river bottoms with bark that exfoliates, leaving multi-colored patches on stem. Flowers and fruits in heads. Large maple-like leaves. Hollow stems of were often used as storage barrels.