2G4 CONVOLVULUS FAMILY. 



I. pandurata, WILD POTATO- VINE or MAN-OF-THE-EARTH. Sandy or 

 gravelly soil, Conn, to 111. & S. : trailing or twining-, stout, smooth, with heart- 

 shaped and sometimes fiddle-shaped or halberd-'Mobed leaves, I - 5-flowiTcd 

 peduncles, sma.l bracts, and open funnel-form white corolla with deep purple 

 eye, 2' -3' long ; root very large and deep. Ij. 



I. sagittiioiia. Salt-marshes, from North Carolina S. : smooth, with 

 stems twining 2 -3 high, or trailing, narrow lanceolate or linear long-sagittate 

 leaves, 1 -3-flowered club-shaped peduncles, and the bright purple funnel-form 

 corolla 2' - 3' long. % 



I. lacundsa. Low grounds, Penn. to 111. and S. : twining, nearly smooth, 

 with heart-shaped nearly entire leaves, short 1-3-flowered peduncles, praal] 

 white 5-lobed corolla about ' long and twice the length of the pointed ciiiate 

 sepals, and slightly hairy pod. (1) 



1. COmmutata. Low grounds S. & W. : rather hairy, twining ; with thin 

 heart-shaped and sometimes angled or 3 -5-lobed leaves, 4-angled 1-5-flowered 

 peduncles about the length of the slender petioles ; purple corolla 1'- 2' long 

 and 4-5 times the length of the pointed ciiiate sepals ; pod hairy. 



3. CONVOLVULUS, BINDWEED. (From Latin convolve, to roll 

 around or twine.) Fl. summer. 



C. arv6nsis, FIELD BIXDWEED of En., is a weed on the coast E. : spread- 

 ing and low-twining, smoothish ; leaves ovate-oblong and narrow-shaped ; pe- 

 duncles 1 -flowered ; corolla white tinged reddish, less than 1' long. 2/ 



C. tricolor. Cult, from S. Europe in gardens ; hairy, low, with ascending 

 branching stems, lance-obovate or spatulate almost sessile leaves, 1 -flowered 

 peduncles, rath*er large and sho\vy flowers opening in sunshine, the corolla blue 

 with pale or white throat and yellow tube, ^) 



4. CALYSTEGIA, BRACTED BINDWEED. (From Greek words 

 denoting the calyx cov red, that is, by the bracts.) Fl. all summer. 



C. S^pium, HKDIE B. AVild in low grounds, also planted : twining freely, 

 sometimes also trailing, spreading by running rootstocks; smooth, also a downy 

 variety ; leaves triangular and halberd-shaped or arrow-shaped, with the lobes 

 at bae obliquely truncate and sometimes toothed or sinuate ; peduncles 4-angled ; 

 corolla white or light rose-colored, 1 %' - 2' long. 2/ 



C. spithainaea. Dry sterile ground j downy, not twining, 6' -12' high; 

 leaves oblong, soma of them more or less auricled or heart-shaped at the base ; 

 corolla white, 2' long. ^/ 



5. BONAMIA. (Named for F. Bonamy.} LOAV, small-flowered: corolla 

 more or less silky or hairy oucside : fl. summer : chiefly S. 2/ 



B. humistrata. Dry pina barrens from Virg. S. : sparsely hairy or 

 smoothish ; leaves varying from oblong with heart-shaped base to linear ; sepals 

 smooth ; corolla white* almost 1' long ; filaments hairy ; styles united at base. 



B. aquatioa. Along ponds S. : finely soft-downy ; leaves varying as in 

 the preceding ; sepals silky ; corolla pink or purple ^' long ; filaments smooth ; 

 styles nearly separata 



'B. Pickering!!. Sandy barrens from N. Jersey S., scarce : leaves nearly 

 linear, narrow, tapering to a 'sessile base ; bracts leaf-like and longer than the 

 flowers; sepals hairy ; corolla white, hardly ^-' long; styles united to above the 

 middle, and with stamenj also protruding. 



6. SVOLVULUS. (From Latin for unroll, that is, it does not twine.) 

 Low and diminutive small-flowered plants, only S. Fl. summer. 2/ 



E. arg^nteus. Dry ground from Missouri S. : tufted from a woody base, 

 5' -7' high, silky-woolly "all over; broadly lanceolate leaves crowded, mostly 

 nearly sessile, as are the flowers in their axils ; corolla purple ; .$' broad. 



E. SerioeilS. Damp ground S. & S. W. : slender-stemmed, silky with 

 fine appressed hairs, except the upper face of the scattered lance-linear leaves , 

 corolla white or bluish, not ' broad. 



