''Hakea trineura'' is a 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 Queensland. The branches and leaves are covered with rusty hairs and the pendulous flowers are greenish-yellow.

Description

''Hakea trineura'' is a multi-stemmed shrub growing to high and forms a lignotuber. The branchlets and new leaf growth have flattened, brown, short soft silky hairs, or are smooth. The leaves grow on a petiole about long. They are narrowly elliptic to egg-shaped long by wide with three distinct longitudinal veins. The leaves narrow gradually to the apex ending either with a sharp point or rounded. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...

consists of 60-80 greenish-yellow flowers on a smooth or with sparsely flattened soft hairs on a rachis up to long. The mid-green

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 and smooth. The deep yellow

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 ...

s are long and are smooth or with a few hairs when in bud. The styles are mid-green and 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 May to September and the fruit are smooth, obliquely egg-shaped long by wide and slightly curved.

Taxonomy and naming

''Hakea trineura'' was first formally described in 1868 by

Ferdinand von Mueller Baron Sir Ferdinand Jacob Heinrich von Mueller, (german: Müller; 30 June 1825 – 10 October 1896) was a German-Australian physician, geographer, and most notably, a botanist. He was appointed government botanist for the then colony of Vict ...

who gave it the name ''Grevillea trineura'' and published the description in '' Fragmenta Phytographiae Australiae''. In 1868 Mueller changed the name to ''Hakea trineura''. It is said to be named from the Greek ''trineura'' referring to the three-veined leaves. ''Trineura'' is however not attested in ancient Greek.Liddell, H.G. & Scott, R. (1940). ''A Greek-English Lexicon revised and augmented throughout by Sir Henry Stuart Jones with the assistance of. Roderick McKenzie.'' Oxford: Clarendon Press.

Distribution and habitat

''Hakea trineura'' is restricted to the Maryborough to

Rockhampton Rockhampton is a city in the Rockhampton Region of Central Queensland, Australia. The population of Rockhampton in June 2021 was 79,967, Estimated resident population, 30 June 2018. making it the fourth-largest city in the state outside of the ...

area of

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

. It grows in hilly eucalyptus woodland over hummock grasslands. It is a quick growing shrub in tropical areas.

Conservation status

''Hakea trineura'' is listed as "vulnerable" by the Australian Department of the Environment Protection and Biodiversity Conservation Act.

References

{{Taxonbar, from=Q18043051 trineura Flora of Queensland Plants described in 1863 Taxa named by Ferdinand von Mueller