1	"Climbers; leaves opposite; achenes surmounted by long plumose awn"	Clematis
1	"Forbs; leaves alternate or radical; achenes without an awn"	2
2	"Leaves undivided, all radical; fruiting receptacle more than 8 times longer than wide"	Myosurus
2	"Leaves shallowly lobed to deeply divided, alternate along the stem; fruiting receptacle 1-5 times longer than wide"	3
3	"Petals 5-8, scarlet, without nectary"	Adonis
3	"Petals (2-)5, bright yellow or greenish-white, nectary present at base"	Ranunculus