Page Osage-Orange (Bois-d’arc) 69 The Hawthorns 78, 79 Texas Ebony 84 Catclaw Acacia 85 Leadtree (Mimosa) 86, 124 Mesquite 87 Honeylocust 89 Waterlocust 90 Black Locust 91 Prickly Ash 92 Devils-Walkingstick 104 Huisache (Sweet Acacia) 123 TREES WITH CORKY PROJECTIONS ON TWIGS Page Bur Oak (Mossy-Cup Oak) 57 Winged Elm 62 Cedar Elm 63 Sweetgum 76 TREES WHOSE TWIGS HAVE A CHAMBERED PITH Page Walnut 28 Hackberry 66 Sugarberry 67 TREES KNOWN BY THE COLOR AND SHAPE OF THE TWIG PITH Page Star-shaped in Cross-section The Cottonwoods 36, 123 The Oaks 43-60 Triangular in Cross-section Alder 123 Brown in Color The Walnuts 28 The Sumacs 94 TREES WITH SINGLE LARGE FLOWERS Page Magnolia 70 Pawpaw 72 TREES WITH FLOWERS IN CLUSTERS