PLANTS OF IOWA 205 



Ipomcea, L. 



2647. 7. pandurata, (L.) Meyer. Wild Potato Vine. 

 Infrequent, in dry ground. 



2648. 7. lacunosa, L. Smarll-flowered White Morning-glory. 

 Frequent. 



2649. I. purpurea, (L.) Roth. Morning-glory. 

 Escaped from gardens. 



2650. 7. hederacea, Jacq. Ivy-leaved Morning-glory. 

 Probably introduced from tropical America. 



Convolvulus, L. 



2651. C. sepium, L. Hedge Bindweed 

 Common in fields and waste places. 



2652. C. repens, L. Trailing Bindweed. 

 Infrequent. 



2653. C. spithammis, L. Upright Bindweed. 

 Dry soil, infrequent. 



2654. C. arvensis, L. Small Bindweed. 



In fields and waste places. Introduced from Europe. 



CUSCUTACE^E. DODDER FAMILY. 



Cuscuta, L. 



2655. C. arvensis, Beyrich. Field Dodder. 

 Infrequent. 



2656. C. polygoiioriun, Engelm. Smart-weed Dodder. 

 Common. 



2657. C. coryiij Engelm. Hazel Dodder. 

 Infrequent. 



2658. C. cephalianthi, Engelm. Button-bush Dodder. 

 On coarse herbs. Common. 



2659. C. gronovii, Willd. Gronovius' Dodder. 

 Low ground, infrequent. 



2660. C. cuspidata, Engelm. Cuspidate Dodder. 

 In sandy soil. 



2661. C. paradoxa, Raf. Glomerate Dodder. 

 Reported by Fitzpatrick. 



