369] FLORA OF COLUMBIA AND VICINITY 327 



942. S. rigida L. [0. rigidjim (L.) Small]. Stiff golden 



ROD. 



Rare on light dry soil. 



Ontario and Michigan to the Northwest Territory; 

 Georgia to Texas and Colorado. 



397. ASTER L. Starwort. 



943. A. oblongifolius Nutt. Aromatic aster. 

 Common on bluffs and wild hills. 



Pennsylvania to Minnesota and South Dakota; Virginia 

 to Texas. 



944. A. anomalus Engelm. Cliff aster. 

 Common on limestone cliffs. 



Illinois to Missouri and Arkansas. 



945. A. cordifolius L. Heart-leaved aster. 

 Infrequent in thickets and open woods. 



New Brunswick to Minnesota; Georgia to Missouri. 



946. A. Drummondii Lindl. Drummond's aster. 



Dry soil in wild fields and thickets; abundant : extreme- 

 ly variable, numerous forms passing into the preceding and 

 also into the following. 



Ohio to Minnesota; Arkansas to Texas. 



947. A. sagittifolius Willd. Arrow-leaved aster. 

 Common in thickets and open woods. 



New Brunswick to North Dakota ; New Jersey to Ken- 

 tucky and Kansas. 



948. A. turbinellus Lindl. Prairie aster. 

 Common on cliffs and in thickets. 

 Illinois to Kansas; Arkansas to Louisiana. 



949. A. ericoides pilosus (Willd.) Porter \^A. ericoides vil- 

 losiis (Michx.) T. & G.]. Heath aster. 



Abundant in wild fields and along roads. 

 Pennsylvania and Ontario to Minnesota; Georgia to 

 Mississippi and Missouri. 



