These trees were growing near the 3rd peak of Mt Olomana on Oahu. The ones in question are the ones with the long red flowers.
Schefflera (pronounced /ˈʃɛflərə/) is a genus in the flowering plant family Araliaceae. The plants are trees, shrubs or lianas, growing 1-30 m tall, with woody stems and palmately-compound leaves. The circumscription of the genus has varied greatly. Phylogenetic studies have shown that the widely-used broad circumscription as a pantropical genus of over 700 species is polyphyletic, but it remains to be seen how this will affect the classification of the genus.