282 



CLARENCE F. KORSTIAN 



TABLE 3 



Systematic summary of vegetation on fifty-three list quadrats tahen at random on 

 the San Mateo Division of the Datil National Forest, New Mexico 



Bryaceae 

 Mnium sp 



POACEAE 



Agropyron tenerum Vasey 



Agrostis hiemalis (Walt.) B. S. P 



Blepharoneuron tricholepis (Torr.) 



Nash 



Bromus polyaiithus Shear 



Bromus porteri (Coult.) Nash 



Festuca arizonica Vasey 



Koeleria cristata (L.) Pers 



Muhlenbergia gracilis (H. B. K.) 



Trin 



Muhlenbergia wrightii Vasey 



Poa rupicola Nash 



Sitanion hrevifolium J. G. Smith 



Sporobolus ramulosus (H. B. K.) 



Kunth 



Cyperaceae 



Cyperus fendlerianus Boeckel 



Commelinaceae 

 Commelina dianthifolia Delile 



Li LI ace AE 



Yucca sp 



Orchidaceae 



Achroanthes montana (Rothr.) 



Greene 



Salicaceae 



Populus tremuloides Michx 



Fagaceae 



Quercus gamhelii Nutt 



Quercus grisea Liebm 



Polygonaceae 



Eriogonum alatum Torr 



Eriogonum jamesii Benth 



Polygonum douglasii Greene 



Chenopodiaceae 



Chenopodiumob longifolium (S. Wats.) 

 Rydb 



PER CENT OP QUADRATS ON WHICH SPECIES OCCUR 



Canon 

 bottom 



(12 

 quad- 

 rats) 



25 



17 



8 

 50 

 17 

 42 



33 

 8 

 



17 



17 





 







8 





 





 

 



North 

 slope 



(13 

 quad- 

 rats) 



15 





 











69 



15 



69 



54 

 

 



31 



15 



23 











46 

 



8 

 8 

 



Total 

 site I 



(25 

 quad- 

 rats) 



12 



4 

 12 



4 

 60 

 16 

 56 



44 

 4 

 



24 



16 



20 















8 



24 

 



4 

 4 

 



South 



slope 



(23 



quad- 

 rats) 





 



56 

 



30 

 



74 



65 







39 



17 



13 



61 







4 











9 

 9 



22 

 

 4 



Ridge 

 top 



(5 

 quad- 

 rats) 





 



20 

 

 



20 

 100 



40 

 

 



80 





 20 

 20 







20 







20 

 40 



40 



20 







Total 

 site II 



(28 

 quad- 

 rats) 





 



50 

 



25 

 4 



64 



61 







32 



29 



11 



54 



4 



4 



11 

 14 



25 

 4 

 4 



