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]