90 Order GERANIALES 
Fairbury; Hat Creek basin; Hooker county; Kimball county; Lin- 
coln; Long Pine; Talmage; Thedford. 
21. Polygonum scandens L. Hedge Bindweed. 
Common in woods mostly along streams. Arapahoe; Banner county; 
Deuel county; Keyapaha county; Lancaster county; Long Pine. 
22. Polygonum sagittatum L. _ Tear-thumb. 
In wet soil mostly in woods along streams. Endicott; Paddock; 
Thedford. 
GERANIALES. 
Trees, with pinnate or trifoliolate leaves. 6. Rutacee. 
Herbs; leaves various. 
Leaves trifoliolate, leaflets obcordate. 2. Oxalidacez. 
Leaves cleft into numerous narrow lobes. 1. Geraniacez. 
Leaves neither trifoliolate nor cleft into numerous narrow lobes. 
Leaves pinnate. 5. Zygophyllacezx. 
Leaves simple. 
Flowers with one sepal spurred. 3. Balsaminacee. 
Flowers without spurs. 
Flowers irregular, stamens 8, united into 1 or 2 sets. 
7. Polygalacez. 
Flowers regular. 
Ovary round, 4-10 celled. 4. Linacez. 
Ovary three-lobed or flattened, 3-4 celled; flowers much 
reduced. 
Ovary three-lobed, three-celled, styles three; plants with 
milky juice. 8. Euphorbiacez. 
Ovary flattened, 4-celled, styles two. 9. Callitrichacee. 
1. GERANIACE. 
Geranium Family. 
Leaves digitately divided or lobed, as wide as long. 1. Geranium. 
Leaves pinnately divided, much longer than wide. 2. Erodium. 
1. Geranium. 573. 
Flowers 25 mm. broad and more. 1. G. maculatum. 
Flowers 10-12 mm. broad. 
Flowers. purple. 
Leaves 3-divided, segments pinnatifid; stamens 10. 
2. G. robertianum. 
Leaves lcbed; fertile stamens 5. 3. G. pusillum. 
Flowers pale pink to white; sepals awn-pointed. 4. G. carolinianum. 
1. Geranium maculatum L. 
Rare. Reported only from Long Pine. 
2. Geranium robertianum L. 
Reported only from Bancroft. 
3. Geranium pusillum Burm. f. 
Probably occurs over most of the state, but not common. Aijins- 
worth; Long Pine; Palmer; Red Cloud. 
4. Geranium carolinianum L. Carolina Crane-biil. 
Lincoln; Louisville; Table Rock; south of Omaha. 
