Descriptive Flora 



93 



flowers that look like little balls of white fuzz. Leaves twice 

 compound, with 2 to 6 divisions and with 4 to 8 pairs of small, 

 oblique leaflets on each side of the divisions (usually only 1 

 pair). Flowers in globular heads the size of small marbles. Pods 

 flat, two to five inches long and about one inch broad. March 

 and April. On limestone hills and rocky hillsides. Thickets of 

 this shrub are almost impenetrable to man and larger animals. 



Acacia greggii A. Gray. Long-flowered Catsclaw. 



Devil's Claws. 



Shrub armed with short, recurved spines similar to the 

 round-flowered catsclaw but having white flowers in compact 

 oblong clusters, 1 to 1%" long. Leaves twice compound, the two 

 to six divisions having 4 to 7 pairs of small, entire, oblique leaf- 

 lets on each division. Pods similar to round-flowered catsclaw 

 but only one-half inch wide and more irregularly constricted be- 

 tween the seeds. March and April. In dry soil, usually sandy 

 loam. Leaflets fold together in pairs when disturbed. 



Acacia amentacea DC. Black-brush. Catsclaw. 



White flowering shrub with straight thorns in pairs along 

 the zigzag branches. Leaves twice compound, each of the two 

 divisions bearing four to eight small, firm, oblique leaflets. 

 Flowers white, turning yellow with age, in oblong clusters about 

 one inch long. Pod narrow, curved, somewhat flat, two to four 

 inches long, constricted between the seeds and usually reddish- 

 brown when ripe. March and April. In dry, sandy soil south 

 of San Antonio. 



Acacia filicioides (Cav.) Trelease. Thomless Acacia. 



( Acacia filicina Willd. ) ' ' Huajillo ' \ 



Thomless shrub (usually herbaceous with only a shrubby 

 base) with large feathery, fernlike foliage and white, fuzzy 

 flower balls the size of marbles. Leaves twice compound, each 

 of the eight to thirty divisions having forty to one hundred small, 



