Key 



Page 



(2) Leaves not aromatic Primus — 92 



s. Leaves over 1" long. 



(x) Flowers purplish or pinkish. Callicarpa— 180 



(y) Flowers white. 



(1) Flowers in flat-topped clus- 

 ters. 



o. Corolla 4-lobed Cornus — 151 



p. Corolla 5-lobed Viburnum — 200 



(2) Flowers in globular clusters, 

 o. Plant 1 — 2' high, rooted in 



crevices of limestone rocks. Buddleia — 160 



p. Plant 2—12' high, leaves 



mostly in whorls of 3.. Cephalanthus— 198 



y. Leaves with more than 1 main vein at 

 base. 



m. Branches zigzag Colubrina — 131 



n. Branches not zigzag. 



(1) Leaves about 1" long. 



o. Leaves thick, plants parasitic on 



trees Phoradendron — 197 



p. Leaves thin. 



1. Stems square, leaves toothed.. Salvia — 187 



2. Stems not square, leaves entire Phiiadelphus — 90 



(2) Leaves over 1" long. 



o. Blades triangular Eupatorium — 214 



p. Blades not triangular Cornus — 151 



(II) Leaves mainly alternate, 

 x. Leaves with 1 main vein at base, 

 m. Branches thorny. 



1. Leaves linear, white underneath Castela — 118 



2. Leaves broader than linear. 



(a) Younger branches streaked 



lengthwise Zizyphus — 131 



(b) Younger branches not streaked 

 lengthwise. 



(1) Leaf -stalk with leaf-like ap- 

 pendage at base Crataegus — 91 



(2) Leaf -stalk not appendaged at 

 base. 



o. Leaves woolly underneath .Bumelia — 158 



p. Leaves not woolly underneath. 



