2G4 coNvoi-vuLus family. 



I. pandurita. Wild Potato- Vine or Man-of-the-Eaktii. Sandy or 

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

 shaped and sometimes fiddle-shaped or Iialberd-3-lobed leaves, 1 - .5-flowered 

 peduncles, small bracts, and open funnel-form white corolla with deep purple 

 cj-e, 2' - 3' long ; root very large and deep. 11 



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

 stems tymiing2°-3° high, or trailing, naiTow lanceolate or linear long-sagittate 

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

 corolla 2' -3' long. % 



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

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

 •white 5-lobed corolla about ^' long and twice the length of the pointed ciliate 

 sepals, and slightly hairy pod. (i) 



I. COmmut^ta. Low grounds S. & TV. : rather hairy, twining ; with thin 

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

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

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



3. CONVdLVULUS, BINDWEED. (From Latin cmvolvo, to roll 

 around or twine. ) Fl. summer. s 



C. arv6nsis. Field Bindweed of Eu., is a weed on the coast E. : spread- 

 ing and low-twining, smoothiah ; leaves ovate-oblong and naiTow-shaped ; pe- 

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



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

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

 peduncles, rather large and showy 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 covrred, that is, by the bracts.) Fl. all summer. 



C sdpium, Hedse B. Wild 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 base obliquely truncate and sometimes toothed or sinuate ; peduncles 4-anglcd ; 

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



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

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

 corolla white, 2' long. y. 



5. BOWAMIA. (Named for F. Bonamy.) Low, small-flowered : corolla 

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



B. humistrita. Dry pine 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. aqu&tiea. Along ponds S. ; finely soft-downy ; leaves varying .is in 

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

 styles nearly separata 



B. Piekeringii. Sandy barrens from N. Jcrscv 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 stamens also protruding. 



6. EVOLVULUS. (From Latin for unrM, that is, it does not twine.) 

 Low and diminutive small-flowered plants, only S. Fl. summer. ■ y. 



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 sessilo,~as are the flowers in their a.xi's ; corolla purple; \' broad. 



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

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

 coroU.^ whita or bluish, not J' brond. 



