30 
190. 
IOI. 
SHRUBS, 
Simple, 
. Leaves entire. 176. 
Leaves, or most of them, toothed. 195. 
Leaves lobed. 218. 
Entire. 
. Leaves with translucent oil-glands. 
Leaves not pellucid-dotted. 177. 
. Very aromatic when crushed. 
Not noticeably aromatic. 178. 
. Leaves very large, cordate: pith excavated. 
Hypericum. 
Calycanthus. 
Paulownia. 
Leaves moderately small or else pith continuous. 179. 
Leayes at most paler green beneath. 1092, 
. Pith chambered or excavated: twigs slender. 180. 
Pith continuous. 181. 
. Buds solitary or collateral. Symphoricarpos. 
Buds often superposed. Lonicera. 
. Leaves long, narrow and willow-like. Chilopsis. 
Leaves not willow-like. 182, 
. Half-woody: often dying bzck in winter. 183. 
Fully lignified. 184. 
. Leaves glossy. Fontanesia. 
Leaves dull. Clerodendron. 
4. Leaves white beneath, with appressed twin-hairs. Cornus. 
Leaves without twinned hairs. 185. 
. Leaves rather small (scarcely 25 mm. wide). 186. 
Leaves distinctly larger. Io1. 
. Leaves microscopically dotted beneath, Ligustrum. 
Leaves not dotted. 187. : 
. Leaves obtuse, nearly as broad as long. Symphoricarpos. 
Leaves acute, more elorgated. 188. 
. Some stellate hairs on twigs or leaves. Deutzia. 
Without star-shaped hairs. T1éo. 
. Leaves separated, in 4 ranks. Rhamnus., 
Leaves in opposite pairs. Igo. 
Leaves small (scarcely 2 cm. long), rough. Fendlera. 
Leaves distinctly larger. Cornus. 
Leaves whitened beneath, rough-ciliate. Syringa. 
