l8 UNIVERSITY OF MISSOURI STUDIES [l66 



posa lily, the painted cups, and the wool- joints are present, b. 

 The cactus mesa (Spinosae). c. The Yucca mesa (Ensi- 

 formes). d. The wooded mesa (Sylvestres). e. The 

 brush mesa (Arbustales). f. The mesa canon (Vallicolae). 

 a. Pratenses. The flora of the mesa meadow is com- 

 posed of an admixture of plants both from the plains and the 

 foot-hills. Typical plants are: 



Sorghastrum nutans Calochortus Gunnisonii 



Stipa comata Comandra pallida 



S. viridula Eriogonum alatum 



Bouteloua hirsuta E. flavum 



B. oligostachya E. umbellatum 

 Atheropogon curtipendulus Polygonum Douglasii 

 Koeleria cristata Silene antirrhina 

 Poa triflora Lychnis Drummondii 

 P. interior Delphinium Penardii 

 P. pseudopratensis D. camporum 



P. junci folia D. Nelsonii 



P. confusa Anemone cylindrica 



Festuca octoflora Pulsatilla hirsutissima 



Agropyron tenerum Argemone intermedia 



A. pseudorepens Potentilla effusa 



Elymus brachystachys Drymocallis fissa 



E. villiflorus Lupinus Plattensis 



Carex marcida L. decumbens 



C. pratensis Geoprumnon succulentum 

 C. straminea Astragalus nitidus 



C. straminiformis A. goniatus 



C. Pennsylvania vespertina Tium Drummondii 

 C. umbellata brevirostris Aragallus Lambertii 

 Tradescantia Universitatis A. sericeus 

 Yucca glauca Psoralea tenuiflora 



