1	"Flowers wheel-like, lobes more or less regular; style with 3–5 branches"	2
1	"Flowers mostly irregular with an unbranched, headed style"	3
2	"Leaves pinnate"	Sambucus
2	"Leaves simple"	Viburnum
3	"Fruit an achene or capsule"	4
3	"Fruit a berry"	7
4	"Fruit an achene; stamens 4"	5
4	"Fruit a capsule with 2 valves containing many seeds; stamens 5"	6
5	"Achene egg-shaped and bristly"	Kolkwitzia
5	"Achene elongated and without bristles"	Abelia
6	"Flowers yellow, 2-lipped ."	Diervilla
6	"Flowers white to pink or deep red or reddish purple, not 2-lipped"	Weigela
7	"Ovary with 5–8 chambers"	Leycesteria
7	"Ovary with 2–4 chambers"	8
8	"Corolla more or less regular; fruit a berry-like drupe with 2 nutlets"	Symphoricarpos
8	"Corolla irregular; fruit a berry with several to many seeds"	Lonicera