BugwoodWiki Article

silkoak
Grevillea robusta A. Cunningham ex R. Br.

Overview

Appearance
Grevillea robusta is a perennial tree that can grow up to 65.6-98.4 ft. (20-30 m) tall.
Foliage
Bark is dark grey with a lace-like pattern. The foliage of this plant is very fern-like. Leaves are pinnate to bipinnate, 3.9-13.4 in. (10-34 cm) long with a green upper surface and a silvery lower surface.
Flowers
Flowers are bright orange, 0.78 in. (2 cm) long, in pairs along flower spikes, and grouped into compound recemose inflorences that are then grouped into panicles of 1 to 6.
Fruit
Fruits are two-seeded, slender and 0.78 in. (2 cm) long. Seeds are 0.51-0.75 in. (13-19 mm) long, winged with a brown, ovate central seed body.
Ecological Threat
Grevillea robusta prefers disturbed areas including disturbed rainforests and along riverbanks. It is native to Australia.

Selected Images


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5414845

silkoak
Grevillea robusta
Seedling(s)
Forest and Kim Starr
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1393138

silkoak
Grevillea robusta
Flower(s)
Dennis Haugen
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5401823

silkoak
Grevillea robusta
Flower(s)
Lesley Ingram
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5401824

silkoak
Grevillea robusta
Flower(s)
Lesley Ingram
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1393139

silkoak
Grevillea robusta
Flower(s)
Dennis Haugen
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5463915

silkoak
Grevillea robusta
Foliage
Lyndon Photography
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5463916

silkoak
Grevillea robusta
Foliage
Lyndon Photography
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5470878

silkoak
Grevillea robusta
Foliage
Lebermuth Company

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Rosidae
Order: Proteales
Family: Proteaceae
Genus: Grevillea

Other System Links

Plants: GRRO
GRIN: 18006
ITIS: 27783
NPDN Host: 35442

Synonyms and Other Names

Other Common Names:
silky oak, silver oak

Categories

Category: Hardwood Trees