IOWA ACADEMY OF SCIENCES. 179 



Fetalostemon candidus , Petalostenion violaceus, 



Potenlilla argula, Cassia chamc^crista, 



Lactuca pulcheLla, Coreopsis palntata. 



Verbena stricta, Convolvjilus sepiuni, 



Euphorbia corollata. Verbena bracteosa. 



August and September list — 



Solidago Missouriensis, Solidago rigida, 



Aster sericeus , Aster niultHlorus, 



Atnbrosia psilostachya, Helianthus Maxitniliani, 



Cniciis discolor. Euphorbia inarginata, 



Euphorbia maculata. Euphorbia dictyospertna . 



Loess grasses — 



Bouteloua racemosa, Andropogon scoparius, 



Panicutn vi>gatum, Andropogon protincialis, 



Andropogon nutans. Panicu>n virgatum, 



Sporobolus cuspidatus . 



Sporohulus cuspidatus forms thick interlacing rootstocks 

 that firmly bind the soil. Where it grows it forms a most 

 ■conspicuous feature of the vegetation. It usually grows 

 in newer made soil being much younger than the formation 

 occupied by Androporjon provincialis and A. scoparius. 



Few shrubs occur upon the open grassy meadows. A 

 few however should be listed here. 



Ceanothus ovatus , Rhus glabra , 



Rosa blanda vax . Arkansana. Aniorpha canescens . 



Symphoricarpos occidentalis . 



It should be stated here that the other shrubs like 

 Corylus Americana and Prunus Virginiana are found in 

 close proximity to the woods. The Rhus glabra also 

 spreads from the borders of woods reaching out into the 

 meadows and is a forerunner of a forest growth. 



AMES. 



Early flowering plants of Ames during April and May 

 are as follows: 



Anetnone patens var. Nuttalti- 



ana (rare), Sisymbrium canescens, 



Viola pedata, Viola palmata va.T . cucullata, 



Oxalis violacea, Oxalis corniculata. 



Astragalus carycocarpus , Taraxacum officinale, 



