Sambucus spp., elderberry

Image Source -

Intermountain Flora
Shrubs, or sometimes coarse herbs or small trees, with pithy stems and large, stipulate or exstipulate, pinnately or even bipinnately compound leaves and serrate leaflets; flowers regular, typically 5-merous as to the calyx, corolla, and androecium, borne in compound, umbelliform or paniculiform, basically cymose inflorescences; calyx inconspicuous; corolla rotate or nearly so; ovary 3- to 5-locular, with 1 pendulous ovule in each locule; style very short, almost obsolete, 3- to 5-lobed; fruit berry-like, juicy, with 3-5 small, seed-like stones (each enclosing a seed).

Cronquist, A., Holmgren, A.H., Holmgren, N.H., Reveal, J.L., and Holmgren, P.K. (1984) "Intermountain Flora" pg. 542, vol. 4, The New York Botanical Garden New York.