xiv KEYS LEAVES OPPOSITE 



30. Leaves rounded at ends. p. 328. Stephanotis. 

 Leaves acute at both ends. 31. 



31. Leaf-scars transversely connected, p. 325. Trachelospermum. 

 Leaf-scars without connecting lines. p. 324. Allamanda. 



32. Sap milky: leaf-scars raised, shriveled, p. 327. Periploca. 

 Sap not milky. 33. 



33. Bundle-trace 1: commonly evergreen. 34. 

 Bundle-traces 3: twining. . p. 353. Lonicera. 



34. Twining: stems 4-lined: leaves simple, p. 322. Gelsemium. 

 Scrambling: stems not lined. p. 320. Jasminum. 



35. With spines ending some twigs or in the axils. 36. 

 Without spines or prickles. 40. 



36. Scurfy with shield-shaped (peltate) scales. 37. 

 Without such scales. 38. 



37. Evergreen: buds naked: leaves lanceolate. p. 318. Olea. 

 Deciduous: buds scaly. p. 248. Shepherdia. 



38. Spines forking: evergreen. p. 323. Carissa. 

 Spines unbranched, often blunt: foliage deciduous. 39. 



39. Buds several, superposed, small. p. 316. Forestiera. 

 Buds not superposed, relatively large. p. 220. Rhamnus. 



40. Bundle-traces 3 or more, separate, in an open series. 41. 

 Bundle-trace 1; or many traces scattered or in an ellipse, 



or nearly confluent in a straight or curved line. 86. 

 (This group includes cases in which the bundle-traces 

 are indistinguishable in a shriveled scar). 



41. Leaf-scars large and broad: twigs stout. 42. 

 Leaf-scars small or narrow. 43. 



42. Buds solitary, the terminal enlarged. p. 207. Aesculus. 

 Buds multiple. p. 359. Sambucus. 



43. Leaf-scars linear or U-shaped. 75. 

 Leaf-scars horseshoe-shaped. 85. 

 Leaf-scars not as above unless by tearing. 44. 



44. Evergreen. 45. 

 Deciduous. 48. 



