''Hakea macrocarpa'', commonly known as flat-leaved hakea, is a species of flowering plant in the family ''

Proteaceae The Proteaceae form a family (biology), family of flowering plants predominantly distributed in the Southern Hemisphere. The family comprises 83 genus, genera with about 1,660 known species. Australia and South Africa have the greatest concentr ...

'' and is

endemic Endemism is the state of a species being found only 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 foun ...

to northern Australia. It is a tree or shrub with furrowed bark, woolly-hairy branchlets, narrowly linear leaves and cream-coloured to greenish-yellow flowers.

Description

''Hakea macrocarpa'' is a tree or shrub that typically grows to a height of and has furrowed brownish bark and densely woolly-hairy branchlets. The leaves are narrowly linear, long and wide on a

petiole Petiole may refer to: *Petiole (botany), the stalk of a leaf, attaching the blade to the stem *Petiole (insect anatomy) In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and ...

is long. The leaves are straight to curved, and densely covered with woolly hairs pressed against the surface at first, later

glabrous Glabrousness () is the technical term for a lack of hair, down, setae, trichomes, or other such covering. A glabrous surface may be a natural characteristic of all or part of a plant or animal, or be due to loss because of a physical condition, ...

. Up to 200 flowers are arranged on a floral

rachis In biology, a rachis (from the [], "backbone, spine") is a main axis or "shaft". In zoology and microbiology In vertebrates, ''rachis'' can refer to the series of articulated vertebrae, which encase the spinal cord. In this case the ''rachi ...

mostly long, usually with cream-coloured or white woolly hairs pressed against the surface. The flowers are cream-coloured to greenish-yellow, each flower on a

pedicel Pedicle or pedicel may refer to: Human anatomy *Pedicle of vertebral arch, the segment between the transverse process and the vertebral body, and is often used as a radiographic marker and entry point in vertebroplasty and kyphoplasty procedures ...

long, the

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

long with a straight or curved

style Style, or styles may refer to: Film and television * ''Style'' (2001 film), a Hindi film starring Sharman Joshi, Riya Sen, Sahil Khan and Shilpi Mudgal * ''Style'' (2002 film), a Tamil drama film * ''Style'' (2004 film), a Burmese film * '' ...

. Flowering mainly occurs from May to August, and the fruit is a follicle long containing a winged seed long and wide with a wing down over half of one side.

Taxonomy and naming

''Hakea macrocarpa'' was first formally described by the botanist

Robert Brown Robert Brown may refer to: Robert Brown (born 1965), British Director, Animator and author Entertainers and artists * Washboard Sam or Robert Brown (1910–1966), American musician and singer * Robert W. Brown (1917–2009), American printmaker ...

in '' Supplementum primum Prodromi florae Novae Hollandiae''. The

specific epithet In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...

(''macrocarpa'') means "large-fruited".

Distribution

Flat-leaved hakea grows in red sandy soils on coastal sand dunes, sand dunes, rocky ridges and sandplains in the

Central Kimberley The Central Kimberley, an interim Australian bioregion, is located in the central Kimberley region of Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, t ...

Dampierland Dampierland is an interim Australian bioregion in Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territo ...

Great Sandy Desert The Great Sandy Desert is an interim Australian bioregion,IBRA Version 6.1
data

Northern Kimberley The Northern Kimberley, an interim Australian bioregion, is located in the northern Kimberley region of Western Australia,Ord Victoria Plain The Ord Victoria Plain, an interim Australian bioregion, is located in the Northern Territory and Western Australia, comprising .

Pilbara The Pilbara () is a large, dry, sparsely populated regions of Western Australia, region in the north of Western Australia. It is known for its Indigenous Australians, Aboriginal people; wealth disparity; its ancient landscapes; the prevailing r ...

, Tanami bioregions of Western Australia, the central

Northern Territory The Northern Territory (abbreviated as NT; known formally as the Northern Territory of Australia and informally as the Territory) is an states and territories of Australia, Australian internal territory in the central and central-northern regi ...

and western Queensland.

References

{{Taxonbar, from=Q18081685 macrocarpa Eudicots of Western Australia Taxa named by Robert Brown (botanist, born 1773) Plants described in 1830