Keys Leaves Opposite 



xvii 



Buds quite sessile. 80. 



Buds somewhat stalked: pith continuous. 83. 



I'itli continuous. 81. 



Pith spongy: often stellately pubescent. p. 77. Deutzia. 



Pith excavated: twigs slender. p. 358. Abelia. 



Evergreen: leaf-scars at first raised. p. 267. Garrya. 



Deciduous: leaf-scars low. 82. 



Leaf-scars meeting. p. 75. Jamesia. 



Leaf-scars not meeting. p. 202. Acer. 



Leaf-scars for a time raised: scales valvate. p. 262. Cornus. 



Without this combination of characters. 84. 



Leaf-scars meeting in a point. 



Leaf-scars not meeting. 



Aromatic: buds closely superposed. 



p. 202. Acer. 



p. 349. Viburnum. 



p. 66. Calycanthus. 



Not fragrant: buds solitary. p. 165. Phellodendron. 



86. Leaf-scars fringed: evergreen: sap milky, p. 326. Nerium. 

 Without this combination of characters. 87. 



87. Soft pithy half-shrubs: buds superposed. 88. 

 Without this combination of characters. 92. 



88. Peppery-aromatic: leaf-scars U- or C-shaped. p. 333. Vitex. 

 Not peppery-aromatic. 89. 



89. Leaf-scar subelliptical. 90. 



Leaf-scar triangular or crescent-shaped, p. 321. Buddleia. 

 Leaf-scar or bundle-trace C-shaped. p. 331. Callicarpa. 



90. Leaf-scars of each pair connected. p. 342. Tecoma. 

 Leaf-scars not connected by a downy line. 91. 



91. Leaf-scar straight at top. p.332. Caryopteris. 

 Leaf-scar notched. p. 329. Clerodendron. 



92. Bundle-traces many in a compound or elliptical series. 93. 

 Bundle-traces few (often 3), rather distinct. 95. 

 Bundle-traces 1, sometimes obscure. 97. 



93. Sap milky: bud-scales striated. p. 36. Broussonetia. 

 Sap not milky: bud-scales 2 or four, not ribbed. 94. 



94. Pith chambered: leaf-scars elliptical. p. 337. Paulownia. 

 Pith continuous: scars shield-shaped. p. 310. Fraxinus. 



