OKLAHOMA ACADEMY OF SCIENCE 85 



Paspahim. A large tropical and subtropical genus. The species 

 vary much in habit, though'\most of them grow in sandy soil. Four 

 species found. \ 



Pappophorum apertum. 'l^his species i? not found in the works 

 of Britton and Brown. Only oTie specimen was collected. 



Phragmitcs phragniites. This is the great corn-like grass, with 

 the beautiful plume-like panicles, iound in river bottoms. Its stolons 

 exceed 20 feet in length. 



Panicum. A very large genus. The species cover the county. 

 They furnish most of the "tickle grasses." Six species were col- 

 lected. 



Syntherisma. This is the well-known crab-grass. Very com- 

 mon. Three species in the collection. 



Sorghastrum nutans. A grass with many synonyms. Very 

 common along roads and in sandy flats. 



S chizachyrium scoparium. Very common in sandy soils. Known 

 as Blue-stem. 



Spartina Michaiixiana. Very tall marsh grass. 



Sporobolus. Widely distributed perennials. Five species were 

 collected. 



Tridens. Flava is a beautiful species common along road 

 sides. Stri::ta is another species which has spike-like inflorescence. 



Uniola latifoHa is common in woods. Its nodding, very flat 

 spikelets and its very broad leaves are very noticeable. 



SYSTEMATIC LIST OF THE GRASSES COLLECTED 



NEAR NORMAN IN THE FALL OF 1922 



By C. W. Prier 



1. Andropogon glomeratus (Walt.) B. S. P. Bush Beard- 



grass. 



2. Andropogon virginicus L. Virginia Beard-grass. 



3. Andropogon ternarius Michx. Silvery Beard-grass. 



4. Andropogon furcatus Muhl. Forked Beard-grass. 



5. Andropogon chrysocomus Nash. Yellow-haired Beard- 

 grass. 



6. Antheropogon curtipendulus, Fourn. Fall Gramma Grass. 



7. Aristida gracilis Ell. Slender Triple-awned Grass. 



8. Aristida oligantha Michx. Few flowered Aristida. 



9. Aristida Curtissii, (A. Gray.) Nash. Curtiss's Triple- 



awned Grass. 



10. Aristida Wrightii Nash. Wright's Triple-awned Grass. 



11. Aristida fasciculata Torr. Triple-awned Beard-grass. 



12. Bouteloua oligostachya (Nutt.) Torr. Mesquite grass. 



