Flora of the Hawaiian Islands
Dicotyledon Literature for Grevillea robusta
Wagner et al., 1990, 1999.
   Proteaceae -- The Protea Family Bibliography
      Grevillea robusta

Common name(s): spider flower, `oka kilika, ha`iku ke`oke`o, he oak, silk, silver oak
General Information
DistributionNative to Queensland and New South Wales, Australia, commonly planted throughout tropical and subtropical areas, especially as an ornamental or in reforestation, often naturalized.In the Hawaiian Islands, naturalized on Ni`ihau, Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Kaho`olawe, Hawai`i.

Trees 10-25(-40) m tall, trunk large in old trees; young branches rusty tomentose.
Leaves fern-like, bipinnatifid into (4-)10-21 segments, these lanceolate or rarely linear, upper surface glabrous or sparsely appressed pubescent, lower surface brownish becoming whitish silky pubescent, margins entire or sometimes lobed, recurved.
Flowers numerous in secund, paniculate inflorescences 7-12 cm long, pedicels slender, ca. 10 mm long, glabrous; calyx orange to golden yellow or golden brown, glabrous, the tube 6-9 mm long; ovary stipitate, glabrous; style ca. 1.5 cm long.
Follicles oblique, boat-shaped, ca. 1.5 cm long, glabrous.
Seeds circumwinged.
2n = 20