''Grevillea imberbis'' is a species of flowering plant in the family

Proteaceae The Proteaceae form a family of flowering plants predominantly distributed in the Southern Hemisphere. The family comprises 83 genera with about 1,660 known species. Together with the Platanaceae and Nelumbonaceae, they make up the order Pro ...

and is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to eastern New South Wales. It is a prostrate to low, spreading shrub with egg-shaped to lance-shaped leaves with the narrower end towards the base, and white flowers, sometimes turning pink with age.

Description

''Grevillea humilis'' is a prostrate to low, spreading shrub, that typically grows to a height of and forms a

rhizome In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...

. Its leaves are egg-shaped to lance-shaped with the narrower end towards the base, or sometimes linear, long and wide, the lower surface silky-hairy. The flowers are arranged in clusters of about 4 to 12 on the ends of branches and are white, sometimes turning pink with age, the

pistil Gynoecium (; ) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds. The gynoecium is the innermost whorl of a flower; it consists of (one or more) ''pistils'' ...

long. Flowering occurs from August to February.

Taxonomy

''Grevillea imberbis'' was first formally described in 2000 by

Robert Owen Makinson Robert Owen Makinson (born 1956) is an Australian botanist. He has published some 65 botanical names. See also Taxa named by Robert Owen Makinson. He studied at Macquarie University, was ABLO at Kew in 1995–1996 (replacing Barry Conn Bar ...

in the '' Flora of Australia'' from specimens collected by Roger Coveny near

Kanangra Walls The Kanangra-Boyd National Park is a protected national park that is located in the Central Tablelands region, west of the Southern Highlands and Macarthur regions, in New South Wales, in eastern Australia. The national park is situated approx ...

in 1973. The

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

(''imberbis'') means "beardless", referring to the lack of a beard on the inner

perianth The perianth (perigonium, perigon or perigone in monocots) is the non-reproductive part of the flower, and structure that forms an envelope surrounding the sexual organs, consisting of the calyx (sepals) and the corolla (petals) or tepals when ...

Distribution and habitat

This grevillea is only known from the Kanangra Walls area and in the area between Braidwood and Mongarlowe where it grows in heath and on the edges of heathy woodland.

References

{{Taxonbar, from=Q15580835 imberbis Proteales of Australia Flora of New South Wales Taxa named by Robert Owen Makinson Plants described in 2000