Sambucus species - Elders
Sambucus nigra - Elder
The leaves are broader and the panicle is flat-topped. The pith of the twigs is white.
Sambucus racemosa - Red-berried Elder
The leaves, especially the terminal leaflet are narrower and the panicle is more globose. The pith of the twigs is red.
This tends to replace Elder in the east of county.