SAPOTACEAE 



but of no commercial importance. This tree is not being grown on 

 the nursery. The root cuttings germinate readily but seeds are dif- 

 ficult to geminate. It is not to be recommended except for canyon 

 bottoms and stoop slopos where grazing is to be discouraged. 



CLEACEAE 



Menodora s c a bra is not uncommon almost throughout the south- 

 west. It ranges from 2,000 foot or less to 5,000 foot or mere, 

 on the -very dry sites. Although it is hardly significant as an 

 erosion control plant because of its root one top habit, it serves 

 to extend grazing far beyond the usually soverolv overgrazed bottoms, 

 swales and canyons because of its high palatability. On observation- 

 al plantings in the Tucson region this plant shored the best results 

 of all the plants direct seeded. It is a perfect plant for nursery 

 use - it germinates well, survives well and produces about three 

 good crops of seed each year at Tucson. In harvesting seed in the 

 nursery the tops of the plants arc cut and piled on a canvas or floor 

 and allowed to dry. After drying the seed shatter readily, .Iced 

 can be broadcast or used in a planter. The sites for which the plant 

 is best adapted, however, preclude the use of machinery, 2incc a 

 pure stand is never desirable, the amount of seed per acre should 

 be relatively small, perhaps two to five pounds, depending upon 

 c onditions . 



Menodora s coparia . Our initial crop of seed for this species 

 was collected near the Natural Bridge, Arizona and near Prescctt, 

 Arizona, In both places it constitutes a significant portion of 

 the forage. It is even more widely distributed in the southwest 

 than II, scabra. Its root system makes it a much better erosion con- 

 trol plant than ?■!, .scabra hut its altitudinal range is higher and 

 it is not so well adapted to lower elevations. At Tucson it is not 

 quite so good in nursery production . On the range it germinated 

 equally well. A strain of this species from the Kofa Mountains is 

 being tried. It grows naturally in a much drier site at a lower 

 altitude. We do not have seed for increase at present. At Tucson 

 M, sco paria produces two crops of seed per season. The collection 

 and handling is similar to that of M, scabra. 



Men o dor ops is long if lor a and MiJncdora laevis are comparable 



to the Ilonodoras discussed, lie plan to grow these for comparison. 



Henodoropsis Io.n£if lora. is a larger plant, is much more bushy and 

 may prove to be a better erosion control plant. 



Syringa vulgaris , the common Purple Lilac, is used only as 

 as ornamental in the southwest at the present time but in regions 

 to the east and north of us it has come to 'be a favorite for use 

 as low windbreaks and as such seems very desirable. Observational 



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