84 THE UNIVERSITY OF OKLAHOMA 



worst pests. The whole number of genera, both native and intro- 

 duced is about 170 comprising 1400 or more species. Doubtless 

 there are a few species yet to be discovered, especially in the south. 



The grasses listed below were collected during the period from 

 Sptember 15, 1922, until frost put a stop to the work. 



The list comprises 28 genera and 62 species. Doubtless others 

 will be found later. 



The territory covered includes that part of Cleveland county 

 lying within a radius of ten mi'es of Norman. 



Cleveland county due to its warm climate and variety of 

 soils is rich in her number of grasses. 



The following is a brief description of the genera found. 



Andropogon. This is a polymorphous genus. It was found 

 widely dispersed. Five species are included in this list. 



Antheropogon. Only one species found. 



Aristida. Tufted grasses with narrow leaves. Found in all 

 dry, sandy places. Wherever the virgin soil is disturbed some 

 form of this grass is almost sure to be found. Five species in the 

 list. 



Bouicloiia Gligostachya locally known as mesquite grass. A 

 grass of the warm dry uplands. Only one species. 



Clutetochlca glauca. The yellow Foxtail is common in waste 

 places. 



Capriflla dactylon. The Bermuda ^lass is a native of Europe. 

 It is the lawn grass for the south. 



Cinna latifo'ia Not common in the fall. 



Chloris verticiUata. It forms a tumb'e-grass. The genus is 

 named after Chloris, the godess of flowers. It is very common 

 in dry soil. 



Diplachne fascicularis. Very local. 



Eragrostis. A large genus widely spread over the county. Why 

 called love-grass is more than I can tell. Ten species Avere found. 



Echinochloa Crus-galli. One of the most cosmopolitan of 

 grasses. Found in wet and dry soils. Often a purple color. 



EJeiisine indira. A coarse grass. Common. 



Homalocenchrus. Two species found. Common in moist shady- 

 places. 



Leptochloa altenuata. A beautiful grass. 



Eriochlea punctata. The Dotted Millet is common in waste 

 places. 



Muhlenhcrgia. This genus centers in the arid regions. The 

 species are very variable. Even in the same panicle variations 

 in the spikelets are found. Three species were coHected. 



