The Trees of Texas 121 



2. Gleditsia triacanthos L. Honey Locust. A rather large 

 rapidly growing tree 100 or more high with pale rough bark, 

 spreading branches, zigzag twigs and long simple or branched 

 thorns. Leaves mostly bipinnate sometimes once pinnate. 

 Flowers in staminate and pistillate racemes in April. Fruit 

 a long, flattened, more or less twisted pod with a pulp between 

 the seeds. 



Ontario to Kansas, Florida and Texas. Extensively planted 

 throughout. Grows well in dry or sandy soil. The thorns 

 are somewhat objectionable. Wood hard, strong, coarse 

 grained, reddish brown. 



3. Gleditsia Texana Sargeant. Texan Honey Locust. A 

 la rue narrow topped tree 100-120 high, with thin, smooth 

 bark and unarmed branches. Leaves once or twice pinnate. 

 Flowers in axillary staminate and pistillate racemes. Fruit 

 a straight, flat pod 4 to 5 inches long without pulp between 

 the seeds. Reported from a single bottom land grove near 

 Brazoria, Texas. 



FABACEAE Reichenbach. The Pea Family. 



Trees or shrubs with alternate, pinnate leaves, usually per- 

 fect pea shaped flowers, borne solitary or in compound clus- 

 ters. Fruit a dehiscent or indehiscent pod. 



Leaves with an odd leaflet at the end 1. Eysenhardtia. 



Leaves without an odd leaflet at the end. 



Pods constricted between the seeds 2. Sophora. 



Pods not constricted between the seeds. 



Branches with thorns, pods winged on the 



margin 3. Robinia. 



Branches without thorns, pods not winged 4. Coursetia. 



EYSENHARDTIA H. B. K. 



1. Eysenhardtia orthocarpa S. Watson. A small tree or 

 shrub with thin, gray, scaly bark and reddish brown twigs. 

 Leaves equally pinnate, leaflets 10-24 pairs. Flowers white in 

 dense many flowered axillary spikes. Fruit a short pod, bear- 

 ing usually a single seed. 



Plains and prairies of western Texas and Mexico. 



