gvj: :ieea 2 



Triodia pulchella, Fluff Grass, is very common on depleted 

 ranges in the southwest where the soil is dry and roclcy. It is 

 commonly associated with Creosote Push. The low tufts are rather 

 shallow rooted. Short stolons root freely and frequently the plants 

 make an appreciable ground cover. The plants, however, are never 

 grows closely enough together to constitute a dense stand or to lorn 

 a good binder* Stock do not eat ar. appreciable amount of this 

 grass. It is possible that its value as an erosion control agent 

 has been under estimated and that it can be used satisfactorily as 

 a preliminary ground cover and ho gradually replaced by bettor 

 species. Ho work has boon done ; 1th this species in the nursery. 



Triodia ■ mvtioa . The Slim Triodia is more widely distributed 

 in the Southwest than Fluff Grass. It has a good root system but 

 not stolons or rhisor.es. It is not usually sufficiently abundant 

 to bo a real factor as a forage plant. The clumps are rather snail 

 and the panic 1. s narrow. There arc several other Triodia" in the 

 southwest. All are interesting handsome grasses but they are not 

 abundant enough to be oi much value for forage or for erosion con- 

 trol. The more important ore" arc T, nilosa, T, albescens and 

 T. olongata. All are bunch grasses which grow in very dry, roclcy 

 sites . 



Tripsacuw lancoolatnm, r exican Gama-Grass, is a very rare 

 grass in the United States, Three localities have come to our 

 attention,- one in the Huachuca Fountains, one in . Cycar.orc Canyon 

 and one near the F'cxican border south of Fuby, all in extreme 

 southern Arizona, he, however, have it growing in some profusion 

 on the nursery at Tucson. lip to the present wo have not gotten 

 fertile seeds in quantity, dccaivso of its rank growth it seems 

 possible that this might be made a commercial forage crop under 

 irrigation. It is a perennial with largo rhizomatous roots and tops 

 resembling small corn plants. In erosion control it is suitable 

 only to moist places along streams. A large collection of roots 

 of this species was sent to '.Washington with which to experiment in 

 hybridization with corn. 



The Sedges arc too numerous and of too little significance 

 at present to warrant more than a passing v.-ord. Car cm sop, , are 

 most important.. Fost of then are soil birders of first quality and 

 some are fair forage. Those, however, which are the best soil bin- 

 ders are suited only- to stream banks,- thus their use is limited. 

 They are grass-like plants with triangular stems and usually saw- 

 like coarse leaves. Oyoerus is best knevar b-- the common name, Fut Grass. 



