188 Order CAMPANULALES 
11. Helianthus hirsutus Raf. 
In the southeastern part of the state. Bellevue; Nebraska City; 
Weeping Water. 
12. Helianthus decapetalus L. 
Crete; Nemaha; Newark; Valentine; Weeping Water. 
13. Helianthus tuberosus L. Jerusalem Artichoke. 
In moist soil along streams. Frequently cultivated for its tubers 
and often persists as a weed. Ayr; Callaway; Chadron; Ewing; 
Franklin; Long Pine; Nebraska City; Republican City; Valentine. 
8. Ridan (Verbesina). 996. 
1. Ridan alternifolius (L.) Britton. 
Common in woods in the eastern part of the state. Lincoln; Ne- 
braska City; Weeping Water. 
9. Coreopsis. 997. 
Rays yellow with brown bases or entirely brown; leaves pinnately 
parted. 1. C. tinetera: 
Rays entirely yellow; leaves not pinnately parted. 
Leaves 3-lobed to below the middle, lobes oblong-linear. 
2. C. palmata. 
Leaves 3-lobed nearly or quite to the base, lobes filiform-linear. 
3. C. verticillata. 
1. Coreopsis tinctoria Nutt. Tickseed. 
A common weed in waste places throughout most of the state. At- 
kinson; Fairbury; Fillmore county; Franklin; Lincoln; Minden; Red 
Cloud; Spencer. 
2. Coreopsis palmata Nutt. 
In woods and prairies in the southeastern part of the state. El- 
wood: Nebraska City; Nemaha; Richardson county; Talmage; Weep- 
ing Water. 
3. Coreopsis verticillata L. 
High prairies, common. Alliance; Crawford; Weeping Water. 
10. Bidens. 1000. 
Leaves lanceolate, serrate, not pinnately parted or dissected. 
Heads nodding after fiowering. 2. B. cernua. 
Heads remaining erect. 
Rays large, commonly 25 mm. long or more. 1. B. levis. 
Rays small or wanting. 
Bracts foliaceous; stem purple. .3. B. comosa. 
Bracts not foliaceous; stem straw colored. 4. B. connata. 
Leaves, at least some of them, pinnately parted or dissected. 
Rays small or wanting. 
Achenes flat; awns 2, nearly as long as the achene. 
5. B. frondosa. 
Achenes linear; awns 4, achene several times as long as its 
awns. 6. B. bipinnata. 
Rays large and conspicuous. 
Achenes cuneate or linear-cuneate, less than 2 mm. wide, 5-7 
mm. long. 7. B. trichosperma. 
Achenes 2-4 mm. wide, with thin scarious margins. 
Outer bracts 8-10, not longer than the inner, smooth or ciliate. 
8. B. aristosa. 
