1. (noun) narrow-leaved houhere, Hoheria angustifolia - tall soft-wooded grey-trunked endemic tree bearing masses of narrow sharply-toothed leaves and small clusters of white flowers that develop into dry papery winged fruits. Leaves 20-48mm long by 5-10mm wide (juvenile leaves much shorter and rounder). Flowers in groups of 1-8, on stalks 10-12mm long. A common mostly lowland forest species frequenting alluvial forest where it may at times be dominant. Often an important host for tāpia (white mistletoe, Tupeia antarctica).