108 Order POLEMONIALES 
state. Ainsworth; Banner county; Benkelman; Custer county; Deuel 
county; Lincoln; Long Pine; Plummer Ford; Royal; Valentine; 
Weigand. 
2. Ipomea purpurea (L.) Roth. Morning-glory. 
Sometimes escapes from cultivation. Richardson county. 
3. Ipomoea hederacea Jacq. Ivy-leaved Morning-glory. 
Introduced in the eastern part of the state. Havelock; Lincoln; 
Richardson county; Red Cloud. 
3. Convolvulus. 753. 
Bracts large, enclosing the calyx. é 
Glabrous or slightly hairy; leaves 5 cm. or more long, hastate, the 
lobes acute, often sinuate-dentate. 1. C. sepium. 
Densely pubescent, leaves 5 cm. or less long, sagittate, the lobes 
rounded, entire. 2. C. repens. 
Bracts small, remote from the calyx. 
Plant glabrous or nearly so; leaves hastate, entire. 3. C. arvensis. 
Plant canescent; leaves usually lobed or dissected. 
4. C. hermannioides. 
1. Convolvulus sepium L. Large Bind-weed. 
A common weed throughout most of the state. Fairbury; Indianola; 
Lincoln; Ponca; Valentine. 
2. Convolvulus repens L. Trailing Bind-weed. 
Common as a weed over a large part of the state. Callaway; Fair- 
bury; Red Cloud. 
3. Convolvulus arvensis L. Small Bind-weed. 
A common weed in fields and waste places. Spreads by adventitous 
buds on the roots. Grand Island; Lincoln; Nemaha; Wood River. 
4. Convolyulus hermannioides A. Gray. 
Nebraska, according to Rydberg’s Flora of Colorado. 
4. Cuscuta. 754. 
Styles little if any longer than the ovary, usually shorter. 
Flowers sessile; corolla persistent at the base of the capsule. 
Corolla scales large, deeply fringed. 1. C. arvensis. 
Corolla scales small, often reduced to a few teeth. 
2. C. polygonorum. 
Flowers pedicelled; corolla enclosing or persistent at the summit of 
the capsule. 
Flowers 3-5 mm. long. 3. C. indecora. 
Flowers about 2 mm. long. 
Corolla lobes about as long as the tube, the tips inflexed. 
4, C. coryli. 
Corolla lobes half as long as the tube, the tips not inflexed. 
5. C. cephalanthi. 
Styles several times as long as the ovary. 
Flowers pedicelled, with 2—several entire bracts at the base. 
6. C. cuspidata. 
Flowers sessile, subtended by 8-15 serrulate bracts. 7. C. paradoxa. 
1. Cuscuta arvensis Beyrich. Field Dodder. 
Fairly common on various herbs. Kearney; Lincoln; Minden; Red 
Cloud; Sheridan. 
