62 Order RANALES 
Petals present; some or all spurred. 
Flowers regular; all the petals spurred, carpels 5. 11. Aquilegia 
Flowers irregular; one sepal spurred, carpels 3 or 1. 
12. Delphinium. 
1. Myosurus. 423. 
1. Myosurus minimus L., Mouse-tail. 
Locally abundant in wet soil in various places in the state. Alliance; 
Fairmont; Lewellen; Lincoln; Merriman; Minden; Weeping Water. 
2. Ranunculus. 423. 
Crowfoots or Buttercups. 
Aquatic plants, with dissected leaves or sometimes rooting in mud. 
Petals much larger than the sepals. 1. R. delphinifolius. 
Petals not much larger than the sepals. 2. R. purshii. 
Terrestrial plants; leaves entire, lobed or divided; segments not 
capillary. 
Basal leaves all lobed or divided. 
Plant glabrous, stem hollow. 3. R. sceleratus. 
Plants more or less pubescent. 
Beak of achene strongly hooked. 4, R. recurvatus. 
Beak of achene not hooked. 
Beak short, less than half as long as the achene. 
Flowers about 2 cm. broad. 
Leaves 3-lobed, broader than long, the terminal lobe 
sessile. 5. R. acris. 
Leaves 3-lobed, longer than broad, the terminal lobe 
stalked. 6. R. bulbosus. 
Flowers less than 1 cm. broad. 7. R. pennsylvanicus. 
Beak at least half as long as the achene. 
Beak sword-shaped, nearly as long as the achene. 
8. R. septentrionalis. 
Beak slender, subulate, about half as long as the achene. 
9. R. hispidus. — 
Basal leaves not all lobed or divided. 
Plant pubescent, basal leaves not cordate. 10. R. ovalis. 
Plant glabrous, basal leaves cordate. 11. R. abortivus. 
1. Ranunculus delphinifolius Torr. Yellow Water-crowfoot. 
In shallow water over most of the state. Antelope county; Aten; 
Fremont; Gordon; Minden; Saltillo. 
2. Ranunculus purshii Richards. 
In water near Whitman. 
3. Ranunculus sceleratus L. Celery-leaved or Cursed Crowfoot. 
In edges of ponds, not common. Poisonous. Aten; Belmont; Lewel- 
len; Mullen; Newark; Sidney; Whitman. 
4, Ranunculus recurvatus Poir. 
By springs and streams in the southeastern part of the state. Ne- 
braska City; Weeping Water. 
5. Ranunculus acris L. Meadow Buttercup. 
In the southeastern part of the state. Lincoln; Peru. 
6. Ranunculus bulbosus L. 
Macon. 
