VERBENACEAE 



*I,ippia ligustrina is a shrub somewhat like L, wrigh tii but 

 one which grows considerably taller. It is not uncommon in western 

 Texas but it does not occur in New Mexico or California. It has 

 been found in a few places in Santa Cruz County in Arizona, close 

 to the Mexican border. This shrub has quite long spikes of small 

 white flowers and even more pleasing odor of leaves and flowers 

 than L, wrightii. In Sonora, Mexico it is highly prized as a for- 

 age plant. 7.3 it is easily propagated from seeds and cuttings it 

 should be used as an ornamental and may have value in the future 

 as an erosion control and forage plant in our rovogetation work in 

 the extreme southwest. 



*Lippia canescens, often called L. repons, is an introduction 

 in the southwest. It has been used for many years in lawns in south- 

 ern California and in southern Arizona. It is a low creeper which 

 roots freely along the prostrate stems and thus constitutes a par- 

 excellence erosion control plant. Its tenderness to frost precludes 

 its use in the northern part of our range . Lippia nod if lor a is a 

 plant quite similar to L. canescen s but It has a more erect habit. • 

 According to reports from California it is an exceptional erosion 

 control plant, and should be tried extensively in our range. It is 

 not so suitable for lawns as L, canescens. 



Lippia cunoifolia, a native of western Texas and southern 

 New Mexico, is very similar to the last two and may have the advan- 

 tage of being much hardier. It is being tried at Tucson. 



LABIATAE 



♦Poliomintha i no ana . This Mint promises to become very im- 

 portant in our revegetation program. It is a low spreading shrub 

 commonly found in deep sand, being very abundant in the "White Sands 

 of New Mexico and in the sand hills in the Kopi and Navajo regions. 

 Since it spreads close to the ground it is much more effective in 

 checking drifting sand than plants having single erect stems. This 

 plant is perfectly at home under cultivation, growing luxuriantly 

 at Tucson and Shiprock. If it is kept cut back each season it 

 forms a handsome plant for border planting. The flowers are abun- 

 dant and showy but not loud. The young shoots are tender and of a 

 pleasant minty flavor. They are used extensively by the Hop is for 

 food. It can be said reasonably that they might well grace the 

 tables of whites in garnishes and salads. 



SOLANACEAE 



Lycium exsertum, Vfolf berry. This species "produces fruit 

 in great abundance and it is easy to handle in the nursery. It is 



