CONVOLVULACEAE. 



[Vol. hi. 



3. Convolvulus spithamaeus L. Up- 

 right Bindweed. (Fig. 2953.) 



Conz'oh'uliis spithamaeus I,. Sp. PI. 158. 175.V 

 Calvstegia spilhamaea Pursh, Fl. Am. Sept. 143. 



i'8i4. 

 Volvulus spilhamaeus Kuntze, Rev. Gen. PI. 447. 



1891. 



Pubescent, or glabrate; stem erect or ascend- 

 ing, straight, or the summit sometimes feebly 

 twining, 6'-i2' high. Leaves oval, short- 

 petioled or the uppermost sessile, usually ob- 

 tuse at both ends, sometimes acutish at the 

 apex and subcordate at the base, i'-2' long, 

 }4'-^h' wide; peduncles i-flowered, longer 

 than the leaves; flowers white, nearly 2' long; 

 calyx enclosed by 2 large oval acutish bracts 

 which are narrowed at both ends and not cor- 

 date at the base; stigmas oblong, thick. 



In dry sandj- or rocky fields or on banks, Nova 

 Scotia to the Northwest Territory, south to Florida. 

 Ascends to 3500 ft. in Virginia. May-Aug. 



4. Convolvulus arvensis L. Small 

 Bindweed. (Fig. 2954.) 



Convolvulus arz'oisis L. Sp. PI. 153. 1753. 



Glabrous, or nearly so; stems trailing or decum- 

 bent, very slender, i°-2^° long, simple or 

 branched. Leaves slender-petioled, ovate or ob- 

 long, entire, obtusish and mucrouulate or acutish 

 at the apex, sagittate or somewhat hastate at the 

 base, i'-2'' long, the basal lobes spreading, acute; 

 peduncles 1-4-flowcrcd (commonly 2-flowered), 

 shorter than the leaves; i-3-bracted at the summit, 

 usually with auother bract on one of the pedicels; 

 sepals oblong, obtuse, lyi" long; corolla pink or 

 nearly white, S"-I2" broad; calj'x not bracted at 

 the base; stigmas linear. 



In fields and waste places, Nova Scotia to Ontario, 

 south to New Jersey, Pennsylvania and Kansas. Nat- 

 uralized from Europe. Native also of .\sia. May- 

 Sept. Old names, Hedge-bells, Bearbind, Corn-Lily, 

 Wind, Bellbiue, Corn-bind, Lap-love, Sheep-bine. 



5. Convolvulus incanus Valil. Hoary 

 Bindweed. (Fig. 2955.) 



Conz'oli'uliis incanus Vahl, Symb. Bot. 3: 23. I794. 

 Finely and densely canescent, pale, or some- 

 times greener; stems procumbent or trailing, 

 usually branched, i°-3° long. Leaves rather 

 short-pelioled, lanceolate, ovate to linear in out- 

 line, usually with 2-4 divergent lobes at the 

 base, or the lower pair of lobes reflexed, other- 

 wise entire or irregularly dentate, obtuse and 

 mucrouulate at the apex, i'-2' long; peduncles 

 1-2-flowercd, as long as or longer than the 

 leaves, minutely bracted at the summit; pedi- 

 cels 3"-6" long; sepals oblong, obtuse or mu- 

 crouulate, about 3" long; corolla white to rose- 

 color; stigmas narrowly linear; capsule globose, 

 about as long as the sepals. 



In waste places near Lincoln. Neb. (according 

 to Webber). In dry soil, Kansas and .\rkansas to 

 Arizona, Mexico and Texas. Also in southern 

 South America. April-Aug. 



