302. 
303. 
304. 
305. 
306. 
307. 
308. 
309. 
310. 
311. 
312. 
313. 
314. 
315. 
316. 
317. 
318. 
_Kreys—Le&EAves ALTERNATE XXxi 
Bark not exfoliating. p. 160. Amorpha. 
Bark quickly exfoliating. p. 92. Neillia. 
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. 
Stipules falling from the twig. p. 160. Amorpha. 
Stipules or their scars, if any, on a leaf-cushion. 306. 
Leaf-cushion gland-fringed. p. 152. Colutea. 
Leaf-ecushion not glandular. p. 127. Prunus. 
Buds long and spine-like: stipule-scars long. p. 27. Fagus. 
Without this combination of characters. 308. 
Twigs very stout: leaf-scars large: buds short. 309. 
Without this combination of characters. 310. 
Bundle-traces 5: end-bud present. p. 173. Cedrela. 
Bundle-traces 9: end-bud fallen. p. 170. Ailanthus. 
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. 
Twigs zig-zag, gray: pith small. p. 39. Celtis. 
Twigs straight, brown: pith larger.  p. 242. Stachyurus. 
Buds very large, acute, warty-wrinkled. p. 53. Decaisnea. 
Without this combination of bud-characters. 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. 
Buds solitary: leaf-scars ciliate. p. 47. Euptelea. 
Buds superposed: scars not ciliate. p. 15. Platycarya. 
Leaf-scars rounded: bundle-traces 3. p. 97. Sorbaria. 
Without this combination of characters. 318. 
Buds superposed. 319. 
Buds not superposed. 320. 
