Key to Trees: GROUP B

GROUP B Compound leaves, alternately attached


1. The trees are armed. (have thorns or spines)	Go to #2
+ The trees are unarmed. (no thorns or spines)	Go to #4
2. Thorns on thorn, often extremely thorny, leaves once or twice compound. Fruit a wide, flat pod, dark brown when mature, 10-18" long.	HONEY LOCUST
+ No thorns on thorns	Go to #3
3. The bark has corky outgrowths tipped with short thorns. Leaflets often have prickles	HERCULES CLUB
+ Compound leaf branches into two parts; stout straight thorns up to 2" long. Fruit a rounded pod, 6-9” long	HONEY MESQUITE
4. Leaves are twice-compound, leaflets coarsely toothed or lobed. Fruit a small round ball, green or yellow when mature	CHINABERRY
+ Leaves are once-compound, margins smooth or toothed, but leaves are not lobed.	Go to #5
5. Leaflets are finely toothed.	Go to #6
+ Leaflets have smooth margins.	Go to #7
6. Largest leaflets near the middle of leaf, last leaflet often small or missing. 15-23 leaflets, bark is dark and cracked into rough diamonds when mature.	BLACK WALNUT
+ Largest leaflet near the end of the leaf, and there is usually a terminal leaflet present; leaf has 11-17 curved leaflets. Bark is gray, very rough and craggy.	PECAN
7. Leaflets are oval shaped, small. Fruit hanging in a "string of beads."	EVE’S NECKLACE
+ Leaflets are lanceolate	Go to #8
8. Bark is light gray; leaflets 7-19, alternate on rachis, usually no terminal leaflet; mild smell when crushed.	SOAPBERRY
+ Bark is cinnamon colored; usually has a terminal leaflet, except on very young trees; leaflets have strong, peppery scent when crushed.	CHINESE PISTACHE