''Hakea clavata'', commonly known as coastal hakea is a shrub that 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 an area along the south coast of

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 Territory to the north-east, and South Australia to the south-east. Western Aust ...

. It has thick leaves, pink and grey flowers and grows on rocky outcrops. Hakea clavata habit

Description

''Hakea clavata'' is a lignotuberous spreading or sprawling shrub up to wide and high. Mid-green leaves are thick, flattened, long and narrow long and wide, ending in a hard sharp point. Sometimes club-shaped widening at the apex. The

inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a mai ...

has 60-80 white and pink flowers appearing in short

racemes A raceme () or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the shoo ...

in leaf axils and tips of branches. 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 ...

has a pink claw, grey limbs and white interior. Woody fruit are egg-shaped with the widest part nearer the stem long and wide. Alternatively egg-shaped with the wider section toward the apex, both shapes having two small horns at the back of the fruit. The black-brown seeds have an obliquely obovate shape and a length of . Each seed has a broad wing along one side of seed body.

Taxonomy

''Hakea clavata'' was first formally described in 1805 by

Jacques Labillardière Jacques-Julien Houtou de Labillardière (28 October 1755 – 8 January 1834) was a French biologist noted for his descriptions of the flora of Australia. Labillardière was a member of a voyage in search of the Jean-François de Galaup, comte ...

in ''

Novae Hollandiae plantarum specimen ''Novae Hollandiae Plantarum Specimen'' is a two-volume work describing the flora of Australia. Facsimiles of the originals can be found in the onlinBiodiversity Heritage Library (Vol.1)anVol 2) The author was the French botanist Jacques Labillar ...

''. Labillardière may have made a

type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * ...

collection when at the Esperance region in December 1792. 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 ...

(''clavata'') is derived from the

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

word ''clava'' meaning "club", referring to the club-shape of the leaves.

Distribution

Coastal hakea is found on the mainland and on some of the islands between

Israelite Bay Israelite Bay is a bay and locality of the Shire of Esperance in the Goldfields-Esperance region of Western Australia, located along the Southern Ocean. Except for a small strip in the north-west of the locality, Israelite Bay is completely take ...

and Esperance and a single population is known at Hopetoun to the west. The range covers southeastern areas of the

Southwest Botanical Province Southwest Australia is a biogeographic region in Western Australia. It includes the Mediterranean-climate area of southwestern Australia, which is home to a diverse and distinctive flora and fauna. The region is also known as the Southwest Aus ...

. The species grows in rocky sandy clay soils among

granite Granite ( ) is a coarse-grained (phanerite, phaneritic) intrusive rock, intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly coo ...

outcrops and withstands salt laden winds.

References

{{DEFAULTSORT:Hakea clavata Eudicots of Western Australia clavata Plants described in 1805