MIHOSACEAE 



double-trees, tool handles, wagon-body stakes and for firewood* 

 This plant is to be recommended for use on critical areas in draws 

 where grazing should be discouraged. 



* Acacia constricta var. pauc i spina is occasionally a small 

 tree but more often a tall shrub. It ranges from western Texas 

 to southern Arizona in very dry rocky moras and along rocky canyons 

 and draws. The small, abundant and very fragrant balls of flowers I 

 and the straight thorns separate it readily from the Gate law bush. 

 In habit this bush is much less desirable for erosion than the 

 Gate law, as this has an erect habit and commonly a short single trunk 

 from which the branches rise abruptly. The seeds of this species 

 are easy to collect and they germinate readily. The shrubs have a 

 low forage value. 



Acacia spp» V.'e have several Acacias in the southwest besides 

 those already discussed (A. greggii, A. constricta var. pa uc i s p ina) . 

 Some of these are thornless and more or less herbaceous but have 

 excellent rhizomatous roots. A. lemmoni. occurs in the southern part 

 Arizona and frequently forms a considerable part of the ground cover. 

 The base of the plant is somewhat shrubby. The leave? are very 

 finely divided, Y.'hile this is not among the best forage plants, it 

 is, however, browsed and its value for erosion control cannot be 

 discounted. It occupies" quite dry slopes in the lower oak belt of 

 such ranges as the Tluachucas, Santa Ritas and the Chiricahuas. 



* Acacia suf frutcscens is very similar to A. lemmoni. Its 

 range, however, seems to be considerably wider, it being found in 

 some abundance in the mountains near Globe and the plateaus near 

 Flagstaff, as well as in the more southern ranges in Arizona. For 

 all practical purposes it can be considered along with A. lemmoni. 



♦Acacia millif olia* is a low to moderately tall shrub with very 

 finely divided leaves and rather straight stems. It is found in 

 considerable abundance on low limestone rieges in a limited range 

 in southeastern Arizona and adjacent Few Hexico. It doubtless oc- 

 curs in greater abundance in Fexico. On the ridges east of Douglas, 

 Arizona it forms considerable stands. It is heavily browsed, par- 

 ticularly by sheep, it is extremely drought resistant and its value 

 as a browse shrub recommends it for rove go-tat ion programs. It is 

 not unlikel^- that its range can be greatly extended. The region in 

 which it occurs is frequently quite cold. This shrub should be 

 tried as an ornamental. 



♦M imos a biuncifcra is commonly called Gatclaw although this 

 term is possibly better applied to Acacia greggii. The entire bush, 

 including the flowers, suggests Acacia. The leaves arc finely 



