Hakea trineura is a flowering plant in the family Proteaceae and is endemic 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 1–3 m (3–10 ft) 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 1–2.5 cm (0.39–0.98 in) long. They are narrowly elliptic to egg-shaped 7–20 cm (3–8 in) long by 1.3–7 cm (0.5–3 in) wide with three distinct longitudinal veins. The leaves narrow gradually to the apex ending either with a sharp point or rounded. The inflorescence consists of 60-80 greenish-yellow flowers on a smooth or with sparsely flattened soft hairs on a rachis up to 40–70 mm (2–3 in) long. The mid-green pedicel 2.3–3 mm (0.09–0.1 in) long and smooth. The deep yellow perianths are 7–8.5 mm (0.3–0.3 in) long and are smooth or with a few hairs when in bud. The styles are mid-green and the pistil 18–26 mm (0.71–1.02 in) long.
Flowering occurs from May to September and the fruit are smooth, obliquely egg-shaped 2–4 cm (0.8–2 in) long by 1.5–2 cm (0.6–0.8 in) wide and slightly curved.[2][3][4]
Taxonomy and naming
Hakea trineura was first formally described in 1868 by Ferdinand von Mueller who gave it the name Grevillea trineura and published the description in Fragmenta Phytographiae Australiae.[5][6] In 1868 Mueller changed the name to Hakea trineura.[7] It is said to be named from the Greek trineura referring to the three-veined leaves.[2]Trineura is however not attested in ancient Greek.[8]
Distribution and habitat
Hakea trineura is restricted to the Maryborough to Rockhampton area of Queensland. It grows in hilly eucalyptus woodland over hummock grasslands. It is a quick growing shrub in tropical areas.[2][3]
Conservation status
Hakea trineura is listed as "vulnerable" by the Australian Department of the Environment Protection and Biodiversity Conservation Act.[3]
^Barker, Robyn M.; Haegi, Laurence A.; Barker, William R. (1999). Flora of Australia Volume 17B Proteaceae 3 Hakeas to Dryandra. ABRS. ISBN0-643-06454-0.
^"Hakea trineura". Australian Plant Name Index. Retrieved 29 July 2019.
^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.
