GHaftSHEAiS 



*Bo uteloua cho ndro s io.id e s , Spruce-Top Grama, This is a grama 

 which is confined to a relatively small range in our region. It 

 occurs, however, in extreme western Texas and in northern hexico. 

 It is a firm rooted bunch grass of excellent erosion control and 

 forage value, because of the scattering nature of this species and 

 the rough country in which it grows , an attempt will he made to raise 

 it for seed in the nurseries at Tucsor and Pima, 



houteloua eludons , Santa Cruz Grama, This very promising 

 grass is confined in our range to extreme southern Arizona. It sel- 

 dom grows in pure stands and has not been located in sufficient 

 quantity any place to warrant its collection by machinery, A s this 

 has excellent erosion control value and is a good forage plant, we 

 hope to be able to raise it in increase plots in the nurseries at 

 Tucsor and. Pima, It is a dense bunch grass with numerous short 

 spikes to each culm and abundant basal leaves, Professor Thornber 

 says that this grass was named 3, eludons by i-'r, Griffiths of the 

 United States Department of Agriculture", because in spite of the 

 extensive collections and careful stud]' of grasses in southern 

 Arizona by Professor Thornber, this particular species had eluded 

 him as well as other plant collectors in the region prior to 

 Dr. Griffiths' trip to the region. 



*Eouteloua breviscta, Alkali Grama, This is one of our raro 

 grasses, being confined to western Texas and southern hew bexico in 

 our range. It, however, extends into Old hexico. Its range is 

 limited possibly by its soil requirements. It grows by choice in 

 gypsum sands or in rocky calcareous soils. On the borders of the 

 hhite Sands of hew hexico it is one of the chief grasses but at that 

 it is quite scattering. On the ridges above the bottomless Lakes 

 it is abundant end constitutes the chief grass, A strain of this 

 species forms pure stands on the rocky slopes of hills north of 

 man Horn, Texas, In general appearance it resembles blue G r ama but 

 is much more wiry and has a rather open wood]/ base. Contrary to 

 what night be expected this grass grows beautifully in the nursery 

 and produces much leafage. While it docs not have a rhizomatous 

 base it stools freely in sandy soil and forms a very effective 

 erosion control agent. As very little seed of this grass has been 

 collected wc arc gradually getting an increase block through seed 

 collected from the initial trial planting. It is well worthy of 

 trial in very dry cites, especially in calcareous or gypsum soils. 



♦Jknvteloua hirsuta, Hairy Grama, closely resembles Blue Grama, 

 It does not, however, produce so dense a sod and docs not commonly 

 form pure stands. It is very difficult to find on any range where 

 anything but banc! strippers can be used in seed collection. Plants 



