144 



Wine-tree, 70. 



Wing Elm, 61. 



Winged Elm, 61. 



Wing-rib Mountain Sumach, 88. 



-Winter Bloom, 68. 



Witch Elm, 61. 



Witch Hazel, 68. 



Wood Laurel, 102. 



Woolly Larch, 20. 



Woollyleaf Cherry. 76. 



Woollyleaf Plum, 75. 



Taupon (Ilexcassine mytifolia),89. 



Yaupon (Holly), 89. 



Yellow Ash, 82. 



Yellow-bark, 57. 



Yellow-barked Oak, 57. 



Yellow Basswood, 96. 



Yellow Birch, 48. 



Yellow Buckeye, 9-1. 



Yellow Buckthorn, 95. 



Yellow Cedar, 32. 



Yellow Cedar (Juniperus occidentalis) ,35. 



Yellow Cottonwood, 47. 



Yellow Cucumber-tree, 65. 



Yellow Cypress, 32. 



Yellow-flowered Cucumber-tree, 65. 



Yellow-flowered Magnolia, 65. 



Yellow Fir (Pseudotsuga taxifolia), 24. 



Y'ellow Fir (Abies grandis), 26. 



Yellow-fruit Fir, 27. 



Yellow Gum-tree, 100. 



Yellow Haw, 74. 



Yellowfruit Dotted Haw 73. 



Yellow Locust (Cladrastu lutea),82. 



Yellow Locust \Bobinia pseudacacia). 82. 



Yellow Oak (Quercus acuminata), 53. 



Yellow Oak, 56. 



Yellow Pine (Pinus ponderosa) , 15. 



Yellow Pine (Pinus ponderosa scopulomm), 15. 



Yellow Pine (Pinus tceda), 17. 



Yellow Pine (Pinus rigida), 17. 



Yellow Pine (Pinus echinata), IS. 



Yellow Pine (Pinus palustris) , 19. 



Yellow Plum (Primus americanai. 75. 



Yellow. Plum (Prunus angustifoliu), 75. 



Yellow Poplar, 65. 



Yellow Spruce, 21. 



Yellow Willow, 44. 



Yellow-wood (Toxylon pomiferum), 63. 



Yellow-wood, 82. 



Yellow-wood (Xanthoxylum cribrosum i, 84. 



Yellow-wood (Cotinus cotinoides). 87. 



Yellow-wood (Schcefferiafrutescens), 90. 



Yellow-wood (Bhamnus caroliniana), 95. 



Yellow-wood (Bhamnus purshiana) , 96. 



Yellow-wood (Symplocos tinctoria). 105. 



Yew (Gupressus guadalupensis), 32. 



Yew (Tumion calif ornicum), 37. 



Yew (Taxvs brevifolia), 37. 



Yew (Taxus floridana) , '61 . 



Yew Pine, 20. 



Yewleaf Willow, 44. 



Yopon, 89. 



Yucca Cactus, 38. 



Zina, 97 



