KEYS LEAVES ALTERNATE xxix 



270. Twigs greenish. p. 143. Sophora. 

 Twigs brown. 271. 



271. Twigs warty. 272. 



Twigs not warty: leaflets small, blunt, p. 136. Tamarindus. 



272. Leaflets large and pointed. 273. 



Leaflets small, very numerous. p. 134. Leucaena. 



273. Bark papery-exfoliating. p. 171. Bursera. 

 Bark not papery. p. 172. Swietenia. 



274. Leaves with several nectar-glands beneath, p. 127. Prunus. 

 Leaves without such glands. 275. 



275. Leaf-scars with acute angles: hairy. p. 108. Eriobotrya. 

 Leaf-scars transversely elliptical. p. 251. Rhizophora. 

 Without either of these combinations of characters. 276. 



276. Leaf-scars at first raised and minute, p. 120. Cercocarpus. 

 Leaf-scars from the first low. 277. 



277. Leaves large (15 cm. or more long). 278. 

 Leaves distinctly smaller (scarcely 10 cm.). 279. 



278. Leaves oblanceolate. p. 229. Theobroma. 

 Leaves lance-oblong. p. 183. Mangifera. 



279. Leaves with resin-glands, crenate or lobed. p. 13. Myrica. 

 Leaves not resin-dotted, entire. 280. 



280. Glabrous: buds acute. p. 107. Raphiolepis. 

 Somewhat hairy: buds rather obtuse, p. 84. Pittosporum. 



281. Buds small, superposed, in silky pits. p. 140. Gymnocladus. 

 Buds at first under a membrane. p. 139. Gleditsia. 

 Buds neither sunken in pits nor covered if superposed. 282. 



282. With free-flowing gum or sap. 283. 



Sap not flowing freely when twigs are cut. 286. 



283. Pith angular: twigs often corky-ridged, p. 85. Liquidambar. 

 Pith not angular. 284. 



284. Bundle-traces 3, or in 3 groups. 285. 



Bundle-traces or groups more than 3. p. 187. Rhus. 



285. Odoriferous: bud-scales 2. p. 186. Cotinus. 

 Not odoriferous: bud-scales several. p. 34. Morus. 



286. Exuding a sweet gum: pith angled. p. 85. Liquidambar. 

 Not exuding a sweet gum if pith is angular. 287. 



