STEUCTUEE OF THE FOEMATION 



141 



PHENOLOGICAL RECORD OF SPECIES GROWING IN 

 PRAIRIE FORMATION— Co»rt««^rf 



Meibomia iUinoensis 



Meibomia illinoensis 



Mentha canadensis 



Mentha canadensis 



Mesadenia tnberosa 



Mesadenia tuberosa 



Monarda fistulosa 



Muhlenbergia racemosa. 

 Muhlenbergia racemosa. 



Nabalus asper 



Nabalus asper 



Onagra biennis 



Onag^a biennis 



Ozalis striata 



Oxalis striata 



Oxalis violacea 



Oxalis violacea 



Panicnm capillare 



Panicnm capillare 



Panicnm depanperatum. 

 Panicnm depanperatum. 



Panicnia pnbescens 



Panicnm pnbescens 



Panicnm scribneriannm 

 Panicnm scribnerianum 



Panicnm virgatum 



Panicnm virgatnm 



Phalaris amndinacea. . . 



Phlenm pratense 



Phlenm pratense 



Phlox pilosa 



Phlox pilosa 



Physalis heterophylla. . . 

 Physalis heterophylla. . . 



Physalis longif olia 



Physalis longif oUa 



Physalis virginiana var. 

 Physalis virginiana var. 



Plantago major 



Plantago major 



Plantago mgellii 



Plantago nigellii 



Poa pratensis 



Poa pratensis 



Polygala verticillata 



Polygala verticillata 



Polygonnm emersnm . . . 

 Polygonum emersmm . . . 



