Genus 6. 



MORNING-GLORY FAMILY. 



47 



4. Convolvulus spithamaeus L. Upright 

 or Low Bindweed. Fig. 3439. 



Ivulus spithamaeus L. Sp. PI. 158. 1753. 

 Calystegia spithamaea Pursh, Fl. Am. Sept. 143. 



1814. 

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



1891. 

 Convolvulus camporum Greene, Pittonia 3 : 328. 



1898. 



Pubescent, or glabrate; stem erect or ascend- 

 ing, straight, or the summit sometimes feebly 

 twining, 6'-l2' high. Leaves oval, short-petioled 

 or the uppermost sessile, usually obtuse at both 

 ends, sometimes acutish at the apex, and subcor- 

 date at the base, 1-2' long, i'-li' wide; pedun- 

 cles 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 cordate at the base; stigmas ob- 

 long, thick. 



In dry sandy or rocky fields or on banks, Nova 

 Scotia to Ontario, Manitoba, Florida and Ken- 

 tucky. Dwarf morning-glory. Low or bracted- 

 bindweed. May-Aug. 



5. Convolvulus arvensis L. Small Bindweed. 

 Fig. 3440. 



Convolvulus arvensis L. Sp. PI. 153. 1753. 



Glabrous, or nearly so; stems trailing or decum- 

 bent, very slender, i-2l long, simple or branched. 

 Leaves slender-petioled, ovate or oblong, entire, ob- 

 tusish and mucronulate or acutish at the apex, sagit- 

 tate or somewhat hastate at the base, i'-2' long, the 

 basal lobes spreading, acute or obtuse ; peduncles 

 1-4-flowered (commonly 2-flowered), shorter than 

 the leaves, 1-3-bracted at the summit, usually with 

 another bract on one of the pedicels; sepals oblong, 

 obtuse, ij" long; corolla pink or nearly white, 8"-l2" 

 broad ; calyx not bracted at the base ; stigmas linear. 



In fields and waste places, Nova Scotia to Ontario. 

 Montana, New Jersey, Pennsylvania, Kansas, New 

 Mexico and California. Naturalized from Europe. Na- 

 tive also of Asia. May-Sept. Hedge-bells. Bearbind. 

 Corn-lily. YVithwind. Bellbine. Corn-bind. Lap-love. 

 Sheep-bine. 



6. Convolvulus incanusYahl. Hoary Bind- 

 weed. Fig. 3441. 



Convolvulus incanus Vahl, Symb. Bot. 3: 23. 1794. 



Finely and densely canescent, pale, or some- 

 times greener; stems procumbent or trailing, 

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

 petioled, lanceolate, ovate to linear in outline, 

 usually with 2-4 divergent lobes at the base, or 

 the lower pair of lobes reflexed. otherwise entire 

 or irregularly dentate, obtuse and mucronulate at 

 the apex, 1-2' long; peduncles 1-2-flowered, as 

 long as or longer than the leaves, minutely 

 bracted at the summit; pedicels 3"-6" long; 

 sepals oblong, obtuse or mucronulate, about 3" 

 long; corolla white to rose-color; stigmas nar- 

 rowly linear; capsule globose, about as long as 

 the sepals. 



In waste places, near Lincoln. Neb. (according to 

 Webber I. In dry soil, Kansas and Arkansas to 

 Texas, Arizona and Mexico. Also in southern South 

 America. April-Aug. 



