20 WOODY PLANTS 



63. Buds covered by the base of the petiole. . . Cornus , p. 158 



63. Buds covered by a broad membrane. . . Philadelphus ,p. 98 



64. Leaf-scars ciliate at top. 65 



64. Leaf-scars not ciliate. 66 



65. Buds sessile. . . Acer , p. 139 



65. Buds stalked. . . Viburnum , p. 191 



66. Twigs with two or four raised hairy lines. . . Diervilla, p. 187 



66. Twigs without raised lines. 37 



67. Bud -scales none. . .Viburnum, p. 191 



67. Buds with scales. 68 



68. Exposed scales two or four. 69 



68. Exposed scales more tlian four. 72 



69. Buds stalked. . . Acer, p. 139 



69. Buds not stalked. 70 



70. Leaf-scars connected by lines. . . Lonicera, p. 187 



70. Leaf-scars not connected by lines. 71 



71. Stipule-scars present, almost connecting the 

 leaf scars. . . Staphylea , p. 139 



71. Stipule-scars none. . . Acer, p. 139 



72. Buds superposed. 73 



72. Buds not superposed. 74 



73. Leaf-scars raised. . . Lonicera , p. 187 



73. Leaf-scars low. . . Diervilla , p. 187 



74. Soft-wooded shrubs. . . Hydrangea , p. 99 



74. Trees or shrubs, not soft-wooded. 75 



75. Leaf-scars meeting in a point. . . Acer, p. 139 



75. Leaf-scars not meeting. . . Viburnum , p. 191 



76. Bundle-traces many. 77 



76. Bundle-trace one. 79 



77. Sap milky. . . Broussonetia, p. 87 



77. Sap not milky. 78 



78. Pith continuous. . .Fraxinus, p. 179 



78. Pith chambered. . . Paulownia , p. 185 



79. Scurfy with peltate scales. . . Shepherdia, p. 155 

 79. Not as above. 80 



