48 University of Texas Bulletin 



AESCULACEAE (HIPPOCASTANACEAE) Buckeye Family 



Aesculus Pavia L. Red Buckeye. 



Very common in ravines and on the lower slopes of the Edwards 

 Plateau. A small tree, with beautiful clusters of reddish blossoms 

 in the spring. Recognized by its large palmately compound leaves. 



Southeastern States. 



ACERACEAE Maple Family 



Rulac texana Small. Box elder. Ash-leaved Maple. 



Flood plain of the Colorado. A common shade tree in Austin. 

 Very similar to Rulac Negundo, but with pubescent twigs. 



Central North America from Canada to Mexico. 



SAPINDACEAE Soapberry Family 



Cardiospermum Halicacabum L. Balloon Vine. 



Flood plains of Barton Creek and Waller Creek. A vine cultivated 

 and named for its balloon-like pods. 



The southeastern states. Tropical America. 



Sapindus Drummondii. Soapberry. Wild China Tree. 



Ravines and hillsides. A common shade tree in Austin. Easily 

 identified by its pinnately compound leaves and large yellow berry- 

 like fruits. 



Southern central states and Mexico. 



Ungnadia speciosa Endl. Mexican Buckeye. Spanish Buckeye. 

 Texas Buckeye. 



Abundant in ravines and on moist rocky hillsides. Very common 

 in the ravines of the Edwards Plateau. A shrub well known by its 

 three-lobed pods in which the dry seeds rattle when mature. 



Texas, New Mexico, Mexico. 



RHAMNALES 

 FRANGULACEAE (RHAMNACEAE) Buckthorn Family 



Berchemia scandens Trelease. Rattan. Supple-Jack. 



A climbing (or twining) shrub with long smooth supple branches. 

 Abundant in ravines and on moist bluffs of the Colorado. 



Southeastern states. 



Ceanothus ovatus Desf. Red Root. 



A low shrub commonly found on the bluffs and in the ravines of 

 the Edwards Plateau. 



Southeastern States. 



