| 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. |
