Alectryon macrococcus, known as ʻAlaʻalahua or Māhoe in Hawaiian, is a slow-growing flowering tree in the soapberry family, Sapindaceae, that is endemic but manifests rarely in mesic forests of Kauai, Oahu, Molokai, and Maui Hawaii.

[2] The tree grows to a maximal height of about 10 meters with leaves 3 to 30 cm long with two to five pairs of elliptic pinnae.

Fruits are from 1 to 3 inches in diameter with a single black seed embedded in a red, fleshy aril.

More than a century ago, it was noted that Native Hawaiians ate the fleshy, insipid and slightly sweet arils and mildly flavored seeds.

macrococcus inhabits mesic forests at elevations of 365–1,035 m (1,200–3,400 ft) on Kauaʻi, Oʻahu, Molokaʻi and western Maui.