652 REPORT OF NEW JERSEY STATE MUSEUM. 



has been introduced as a weed at Cold Spring, Cape May County 

 (O. H. Brown). 



A characteristic plant of the serpentine outcrops of south- 

 eastern Pennsylvania and perhaps not native anywhere in south- 

 ern New Jersey. 



Pi. — Late June to midrAugust, and sporadically into Septem- 

 ber. 



Order POLEMONIALES. 



Family CONVOLVULACE.^. Morning Glories. 

 Key to the Species. 



a. Style two cleft, flowers white. Breweria, p. 652 



aa. Style entire, up to the stigma. 



b. Stigmas two, filiform to oblong. 



c. Calyx with two large bracts at the base, which enclose it. 

 d. Plant trailing. 



e. Glabrous, leaves hastate, flowers pink with white stripes 



or white. Convovulus sepium, p. 653 



ee. Pubescent, leaves cordate, flowers white. C. repens, p. 654 



dd. Plant upright, flowers white. C. spithamceus, p. 653 



cc. Calyx without bracts, flowers pink or white. [C. arvensis]* 



bb. Stigmas one or two, capitate or globose. 



c. Flowers white, sometimes with striped throat, leaves cordate or 

 often contracted in the middle. 



d. Corolla 50-80 mm. long. Ipomaea pandurata, p. 653 



dd. Corolla 8-20 mm. long. /. lacunosa, p. 653 



cc. Flowers normally blue, sometimes pink, white or variegated. 



d. Leaves entire, cordate. [I. purpurea]^ 



dd. Leaves deeply three-lobed. [/. hederacea\% 



BREWERIA R. Browne. 

 Breweria pickeringii (M. A. Curtis). Pickering's IVIornIng Glory. 



Convolvulus Pickeringii M. A. Curtis, Bost. Jour. Nat. Hist. I. 130. 1837 



[Wilmington, N. C.]. 

 Bonamia Pickeringii Willis 48. 

 Breweria Pickeringii Britton 180. — Keller and Brown 263. 



Confined to dry sandy banks in the Pine Barrens, where it 

 is known from probably not more than three or four stations. 

 Certain it is that two, and probably three, of those given in 



* Small Bindweed. A weed in fields and waste ground. 



t Morning Glory. Escaped in waste ground, fields, etc. 



t Ivy-leaved Morning Glory. Often escaped, less frequent than the last. 



