66 STUDIES IN THE VEGETATION OF THE STATE 



for Baptisia. Carex festucacea frequents meadows, where it 

 occurs as a secondary species. It adds little to the flpral 

 aspect. Allogamy is secured in pollination by means of pro- 

 terogynous stigmas. Scutellaria parvula, a small herb, per- 

 ennial by means of tuberous rootstalks, occurs rarely in the 

 meadows. Scutellaria is scarcely noticeable, owing to the 

 denser meadow facies which soon overtop it. Viola obliqua 

 is a hydrophyte, occurring as a secondary species in the sedge 

 meadow, and meadow formations. Its flowers are chasmo- 

 cleistogamous, the cleistogamous ones being abundantly 

 fertile. 



ELEMENTS OP THE LATE VERNAL FLORAL ASPECT 



Fades 



Koeleria cristata. Stipa spartea. 



Panicum scribnerianum. 



Principal Species 



Ceanothus ovatus. 



Secondary Species 



Agrostis hiemalis. Panicum depauperatum 



AJlionia nyctaginea P. pubescens. 



ovata. Phlox pilosa. 



Anemone canadensis Physalis virginiana var. 



Asclepias obtusif olia. Psoralea esculenta. 



Caiamagrostis canaden- Rosa arkansana. 



sis. Rumex altissimus. 



Delphinium carolinianum. R. crispus. 



Eatonia obtusata. Tradescantia virginiana. 



Galium tinctorum. Trifolium pratense. 



Juncus tenuis. T. repens. 



Onosmodium moUe. Tripsacum dactyloides. 



Oxalis stricta. Zizia aurea. 



