ERICACEAE 



It resembles A, pur.g ons but is a lower shrub with a snore prostrate 

 habit. It is an excellent soil binder and should receive attention 

 along with A, pun g ens . 



A. pr ing le i is confined to Arizona and Mexico. It reaches its 

 maximum development in the Pine and Payson 'region where it is an 

 erect shrub often ten feet or more in height* It docs not constitute 

 as good an erosion control plant as A. pungens but is comparable as 

 a wildlife plant. 



Ar c t o staphyl o s uva ursi, the common Kinnickinnick or Bear- 

 berry-, occurs at high altitudes in northern Hew Mexico but is much 

 more common northward, occurring in Canada and across the continent. 

 YJhilo its habit suggests it as an ideal erosion control plant (it 

 is creeping and forms dense mats), its altitude and moisture require- 

 ments preclude its use except possibly in unusual cases in our ero- 

 sion control program. The loaves of this shrub constituted one of 

 the chief substitutes for tobacco for the Indians c half century ago. 

 It was commonly used also to mix with tobacco until the white man 

 substituted the lowly cabbage. 



* A rbutus arizon ica , our native Iladron, is a handsome tree 

 often forty feet high or more and two feet in diameter with bark 

 which exfoliates from the young "branches and dark evergreen leaves. 

 It is hardy from 4,000 to 8,000 feet altitude in the southwestern 

 ranges, not occurring at low altitudes and may well be considered, 

 a woodland species. It Is very slow growing. The bright red ber- 

 ries which remain on the tree for a long time are very ornamental 

 and arc good bird .rood. The flowers also, are beautiful, resembling 

 those of the Manzanite. This valuable tree has not been grown in 

 the nursery. 



Arbutus texanu.s is a tree similar to A. arizonica, which 

 occurs in the mountains of western Texas and southeastern Hew 

 Mexico, It has broader leaves, somewhat larger fruits and is a 

 smaller tree. It has not been grown in the nursery. 



SAPOTACEAE 



Bumclia rigida, or Chittimwood, is common in the south and 

 Mexico. In Peg ion 8 it occurs in southern Hew Mexico and southern 

 Arizona in rocky canyons and. occasionally on dry, steep rocky 

 north-facing slopes. It Is a small tree with very stiff branches 

 and vie I out: stiff thorns. Groves of it are very effective soil 

 binders as the horizontal roots arc abundant and sprout freely. It 

 is valueless as forage. The wood with us is too small for anything 

 but small tool handles. The exuded gum is interesting to children 



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