Botanic Gardens Trust, Sydney, Australia

Australian Botanic Garden




 Grevillea rhyolitica

The Australian Botanic Garden, Mount Annan - August

Common name rhyolite grevillea, Deua grevillea
Scientific name Grevillea rhyolitica subspecies rhyolitica Makinson
Family  Proteaceae 
Etymology

Genus: After Charles Francis Greville, 1749-1809, co-founder of the Horticultural Society, London, later the Royal Horticultural Society.

Species: Refers to the habitat of the plant on rock outcrops of rhyolite.

Distribution This subspecies has only been found near the south coast of New South Wales, in Dampier State Forest and Deua National Park, inland from Moruya.
Native habitat It prefers moist gullies and steep rocky ridges in mountainous areas at 100 to 600 metres above sea level.
Description

A small to medium, spreading shrub, growing up to 2 m in height with coral red flowers.

Flowering/fruiting Flowering occurs mainly from winter through to summer but flowers may be present at other times of the year.

Location in Garden

In Bed 104 in the Big Idea Garden, and in Beds 155, 158 and 164 in the Banksia Garden.

 

Rhyolite is a volcanic rock (known as ‘streaming rock’ because of the flow bands) which has a high silica content and includes pumice and obsidian.

This species was previously considered part of the Grevillea victoriae complex.

 

 

 

 

 

Grevillea rhyolitica1

Grevillea rhyolitica2