254 CUSCUTACEAE 



1. Ipomoea pandurata (L.) Meyer. Wild Potato Vine. (Man. p. 

 752; I. F. /. 2g4§.) In dry soil, Ont. to Conn., Fla. Mich., Kans. and 

 Tex. — Pennsylvania : Northampton ; Bucks ; Delaware ; Chester ; 

 Lancaster ; Franklin ; Bedford ; Huntingdon ; Allegheny. 



2. Ipomoea lacunosa L. Small - flowered White Morning- 

 Glory. (Man. p. 752 ; I. F. /. 2946.) In moist soil. Pa. to S. C, 111., 

 Kans. and Tex. — Pennsylvania : Lancaster, on the Susquehanna. 



3. Ipomoea purpurea (L.) Roth. Morning-glory. (Man. p. 752 ; 

 I. F. _/. 2949.) In waste places, escaped, N. S. to Fla., Ont. Neb. and 

 Tex. Adv. or nat. from tropical Am. — Pennsylvania : Northampton ; 

 Bucks ; Delaware ; Chester ; Lancaster ; Franklin ; Allegheny. 



4. Ipomoea hederacea Jacq. Ivy-leaved Morning-glory. ( Man. 

 p. 752 ; I. F. /. 2pjo.) In fields and waste places, L. L to Fla., Pa., S. 

 Dak., Neb. and Mex. — Pennsylvania : Northampton ; Bucks ; Phila- 

 delphia ; Allegheny. 



3. CONVOLVULVUS L.* 



Calyx enclosed in 2 large bracts. 



Plants erect or ascending : bracts cordate. i. C. spithamaeus. 



Plants climbing : bracts not cordate. 2. C. sepium. 



Calyx not accompanied by bracts. 3. C. arvensis. 



1. Convolvulus spithamaeus Upright Bindwheed. (Man. p. 753; 

 I. F. /. 2g^j.) In dry sandy or rocky fields or on banks, N. S. to the 

 Northwest Terr., Fla. and Ky. — Pennsylvania : Northampton ; Bucks ; 

 Delaware ; Chester ; Lancaster ; Franklin ; Huntingdon ; Al- 

 legheny. 



2. Convolvulus sepium L. Hedge or Great Bindweed. (Man. 

 P- 753 ; I- F- /• ^9J^- ) 1° fields and thickets, usually in moist soil, N. S. 

 to N. C, Mont., Utah and Kans. Also in Eu. and Asia. — Pennsylvania : 

 Northampton ; Bucks ; Delaware ; Chester ; Lancaster ; Frank- 

 lin ; Allegheny. 



3. Convolvulus arvensis L. Small Bindweed. ( Man. p. 753 ; I. 

 F. /. 29J4.) In fields and waste places, N. S. to Ont, N. J., Neb. and 

 Kans. Nat. from Eu. — Pennsylvania : Northampton ; Bucks ; Ches- 

 ter ; Lancaster ; Franklin. 



Family 2. CUSCUTACEAE Dumort. Dodder Family. 



1. CUSCUTA L. 



Scales within the corolla merely crenulate : stigmas slender : capsule circum- 

 scissile. 



Scales crenulate near the apex, not incurved. i. C. Epilinum. 



Scales crenulate all around, incurved. 2. C. Epilhymum. 



Scales within the corolla fringed : stigmas capitate : capsule utricle-like. 



A. Sepals partially united. 



* Convolvulus Japonicus Thunb. (Man. p. 753.) Escaped from N. 

 H. to D. C. and Md. — Pennsylvania : Northampton ; Bucks ; Chester ; 

 Columbia ; Allegheny. 



