Alsinidendron trinerve H.Mann (1866) Schiedea trinervis, also called three nerved alsinidendron, is a species of flowering plant in the family Caryophyllaceae, that is endemic to island of Oʻahu in Hawaii.

Three-nerved alsinidendron inhabits mixed mesic and wet forests on the slopes of the Waiʻanae Range at elevations of 900–1,230 m (2,950–4,040 ft).

Associated plants include pilo (Coprosma spp.

), ʻapeʻape (Gunnera petaloidea), ʻalani (Melicope spp.

), hame (Antidesma platyphyllum), and māmaki (Pipturus albidus).