RIIAJ TTACEAE 



ground cover, make it an ideal erosion control plant. Owing to its 

 altitu.dinal range, however, this is not being used on any of the 

 erosion control projects at present. VJhen our work takes in yellow 

 pine regions not within the national Forest, it is .not unlikely that 

 this shrub will be .found useful. The leaves and twigs are heavily 

 browsed by doer and less extensively by stock. The blossoms parti- 

 cularly, contain saponin and have been used in tho past as a substi- 

 tute for soap. 



C eanoth us greggii is also called Duck Brush locally. It 

 should be remembered, however, that most any kind of brush may be 

 called locally Buck Brush. It is a more erect and taller shrub 

 than C. f end leri with much stiff er branches and with thick, leathery 

 loaves. It normally grows at a lower altitude than C. fendleri,- 

 in fact in xvestern Texas and central and southern Hew Mexico and 

 Arizona it is associated with the Junipers and Oaks. It has some 

 value as an erosion control plant but very little as forage. The 

 blossoms are sweeter than nest of the Ceanothi and the shrub can 

 be recommended as an ornamental chiefly because it is unusual. 



Ceanothus in t oger r im us is a very uncommon shrub in Region 0, 

 being more typically a northwestern shrub. It occurs in the Oak 

 Creek region and perhaps elsewhere in central Arizona. It is 

 hardly significant as an erosion control shrub but should be used 

 as an ornamental because of the dark green foliage and the large 

 pannicles of white flowers. It commonly grows in sandy rocky, very 

 dry sites. 



* Ce anot hus martini is common in the Grand Canyon and in Zion 

 National Park. It is reported to occur in the Pinyon (pinon) Belt 

 of Utah and. Nevada. It is a low spreading shrub which layers 

 readily and since it is highly palatable it should prove to be a 

 valuable plant in erosion control. It is best suited to sandy, 

 rocky sites which are relatively dry and hot. 



Rhamnu s calif ornica var. t orient el la, Buckthorn, It is pos- 

 sible that both the species, B, calif ornica and the variety, grow 

 in our range but they are at best not extremely different. This 

 buckthorn is rather common but soarccely abundant in central and 

 southern Arizona in the foothills of the larger ranges. It is 

 much more common in California. It sometimes grows to be a small 

 tree but more frequently with us it is a large shrub, often very 

 "symmetrical and handsome with grayish green leaves and black ber- 

 ries. The shrub has some value for erosion control along sandy 

 rocky arroyos at the mouth of canyons. It is valueless as forage 

 but should be worthy of cultivation as an ornamental. The berries 

 arc relished by birds. 



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