52 RANALES 
Styles short, not plumose in fruit. 
Basal leaves not twice or thrice ternately compound, 
8. Anemone. 
Basal leaves twice or thrice ternately compound. 
6. Syndesmon, 
Styles elongated in fruit, plumose. 7. Pulsatilla. 
Leaves all opposite. 9. Clematis. 
Carpels with several ovules; fruit a follicle or berry. 
Petals inconspicuous or none; never spurred. 
Leaves simple; flowers solitary; fruit a follicle. 10. Caltha. 
Leaves ternately compound; flowers racemose; fruit a berry. 
13. Actaea. 
Petals present; some or all spurred. 
Flowers regular; all the petals spurred. 11. Aquilegia. 
Flowers irregular; one sepal spurred. 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. 
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. scleratus. 
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. 
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1. Ranunculus delphinifolius Torr. 
In shallow water over most of the state. Antelope County; Aten; Fre- 
mont; Gordon; Minden; Saltillo. Plainview. 
2. Ranunculus Purshii Richards. 
In water near Whitman. 
3. Ranunculus scleratus L. 
