Common name: White Yiel Yiel, White Silky Oak
Grevillea hilliana F.Muell. APNI* 
Description: Tree 8–30 m high.
Juvenile and intermediate leaves pinnatifid or pinnatisect with 3–10 lobes, rarely undivided or more divided, mostly 25–40 cm long and 15–30 cm wide; lobes ± linear to lanceolate, 8–25 cm long, 10–50 mm wide; lower surface silky.
Adult leaves either simple and lanceolate to oblong-elliptic, 9–24 cm long, 15–60 mm wide, or sometimes 4–6-lobed; lobes oblong to ovate, 6–12 cm long, 2–4 cm wide, margins recurved, lower surface silky. Inflorescences sometimes few-branched, 8–22 cm long, branches many-flowered, cylindrical. Perianth white to pale green, silky outside, glabrous or pubescent inside. Gynoecium 13–16 mm long, stipitate, glabrous; style white to pale green.
Follicle glabrous.
Flowering: mainly May–July.
Distribution and occurrence: Grows in subtropical rainforest, often on basic igneous substrates, north of Brunswick R.
NSW subdivisions: NC
Other Australian states: Qld
Threatened species: NSW BCA: Endangered
Text by R. O. Makinson
Taxon concept: R.O. Makinson (2000)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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