/2 Upper sepal strongly hooded; petals 
Il 2, inside the hood J0. 
( Fruit a cluster of achenes; ovaries numerous 
§ Leaves triternately compound, the numerous 
| oq er subequal, glabrous; petals none, 
the flowers numerous, small, dioecious /. 
Leaves simple or once ternate 
Jo Flowers yellow, perfect and regular | a 
iO Flowers whites petals wanting; sepals 
/4 caducous; t#e stamens conspicuous 
bal 
