120 Bulletin of the University of Texas 



bipinmite, rachis winged, leaflets numerous, small, rather far 

 apart. Flowers large and showy, bright yellow, in, slender 

 upright racemes. Fruit a cylindrical few seeded pod, con- 

 tracted between the seeds, pointed at base and apex. In the 

 Rio Grande Valley and extending into Mexico. It has been 

 extensively naturalized throughout the southern part of Texas 

 and is planted for ornament. 



CERCIDIUM Tulasne. 



1. Cercidium floridum Benth. A low wide topped tree 

 15. 20 high with short, crooked trunk, green bark and axil- 

 lary spines. Leaves evenly bipinnate, pinnae 1 pair bearing 

 2-4 pairs of small glandular leaflets. Flowers -appearing with 

 the leaves and produced for several months In successive 

 <3rops, rather large, golden yellow, in 3 to 5 flowered racemes. 

 Fruit a flat, straight, dehiscent, 2 to 3 seeded pod, constricted 

 ^between the seeds. 



Southern Texas and adjacent Mexico. 



The wood is soft, close grained, used for fuel. 



GLEDITSIA (Clayton) L. The Honey Locusts. 



Trees with alternate, equally bipinnate or once pinnate 

 leaves; small, greenish, polygamous flowers in slender axillary 

 clusters; simple or branched axillary spines, and elongated or 

 oval pods. 



Pod oval or elliptic with 1 or 2 seeds 1. G. aquatica. 



Pod elongated 8 to 12 inches, many seeded 2. G. triacanthos. 



Pod elongated 4 to 5 inches, many seeded 3. G. Texana. 



1. Gleditsia aquatica Marsh. Water Honey Locust. A 

 medium sized, wide topped tree 50-60 high with short trunk, 

 stout branches, reddish brown, fissured bark and straight 

 spines which are usually only slightly branched. Leaves once 

 or twice pinnate, pinnae 3 or 4 pairs, leaflets '6 to 12 pairs. 

 Flowers V Long, %'-%' wide, in slender racemes after the 

 leaves. Fruit an obliquely oval 1 or 2 seeded pod. 



In swampy places North Carolina, Florida west to Indiana, 

 Arkansas and Texas. The wood is heavy, hard and strong. 

 Tree sometimes planted for ornament. 



