Keys- Leaves Alternate xxxi 



302. Bark not exfoliating. p. 160. Amorpha. 

 Bark quickly exfoliating. p. 92. Neillia. 



303. Buds appressed: bark exfoliating. p. 91. Physocarpus. 

 Without this combination of characters. 304. 

 Leaf-scars notched: bark shredding. p. 114. Neviusia. 

 Without this combination of characters. 305. 



)5. Stipules falling from the twig. p. 160. Amorpha. 



Stipules or their scars, if any, on a leaf-cushion. 306. 

 )6. Leaf-cushion gland-fringed. p. 152. Colutea. 



Leaf-cushion not glandular. p. 127. Prunus. 



Buds long and spine-like: stipule-scars long. p. 27. Fagus. 



Without this combination of characters. 308. 



308. Twigs very stout: leaf-scars large: buds short. 309. 

 Without this combination of characters. 310. 



309. Bundle-traces 5: end-bud present. p. 173. Cedrela. 

 Bundle-traces 9: end-bud fallen. p. 170. Ailanthus. 



310. Buds small and appressed. 311. 

 Buds scarcely appressed. 314. 



Trunk smooth and green. p. 142. Cercidium. 



Trunk not green. 312. 



Leaf-scars on raised leaf-cushions. p. 127. Prunus. 



Leaf-scars low. 313. 



313. Twigs zig-zag, gray: pith small. p. 39. Celtis. 

 Twigs straight, brown: pith larger. p. 242. Stachyurus. 



314. Buds very large, acute, warty-wrinkled, p. 53. Decaisnea. 

 Without this combination of bud-characters. 315. 



315. Bundle-traces 5 or 7 in 1 series. 316. 

 Bundle-traces 3 or in 3 groups. 317. 



Bundle-traces grouped about a central one. p. 50. Paeonia. 



316. Buds solitary: leaf-scars ciliate. p. 47. Euptelea. 

 Buds superposed: scars not ciliate. p. 15. Platycarya. 



317. Leaf-scars rounded: bundle-traces 3. p. 97. Sorbaria. 

 Without this combination of characters. 318. 



318. Buds superposed. 319. 

 Buds not superposed. 320. 



