28 Field Manual 



44. Leaf scar surrounding the hairy axillary buds; bundle 

 scars 5-9; terminal bud self-pruned. 



• Cladrastis. (32). 



44. Leaf scar not s'urrounding the axillary buds. 45. 



45. Bundle scars 3; buds spherical, bark light gray; leaf 



scars heart-shaped; stipular scars none. 



Sapindus. (38). 



45. Bundle scar usually L buds rounded or somewhat 



pointed; stipular scars or minute stipules present. 



Ilex. (36). 

 —46— 



46. Terminal and lateral buds stalked; pith 3-angled; both 



staminate and carpellate catkins present all winter. 



Alnus. (60). 

 4<i. 15uds sessile or nearly su; pith not 3-anglcd. 47. ' 



47. Leaf scars surrounding the axillary buds which are 



usually sunken; terminal bud self-pruned; bark 

 resinous; pith large. Rhus. (42). 



47. Leaf scars not surrounding the axillary buds. 4S. 



!S. Bundle scar 1, or if several then closely crowded and 

 confluent, appearing as L 49. 



48. Bundle scars more than 1. 54. 



I!'. Stipular scars and stipules present. 50. 

 l!'. Stipular scars and stipules none. 51. 



50. Terminal bud absent; bud scales dark brown or 



black. Rhamnus. (34). 

 5(t. Trrminal bud i)resent; stipuli.'> minute iiMially ])er- 

 si stent. Ilex. (.■><;). 



51. Terminal bud i)rcsent. 52. 



51. Terminal bud absent. 53. 



52. Pith diaphragmed, with cavities; bark reddish; outer 



bud scales several, short. Symplocos. (71). 



52. Pith not diaphragmed; bark green, very spicy aro- 

 matic; internodes very unequal. Sassafras. (16). 



■i'\. With polished, greenish-brown, grayish-yellow, or red 

 twigs; bark sour; leaf scar prominent, semi-oval, 

 with a dark central scar usually in the form of a 

 ring; buds small, not projecting much beyond the 

 epidermis; the large terminal panicled raceme with 

 capsules persisting all winter. Oxydendrum. (68). 



