Hibbertia arnhemica

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Hibbertia arnhemica
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Dilleniales
Family: Dilleniaceae
Genus: Hibbertia
Species:
H. arnhemica
Binomial name
Hibbertia arnhemica

Hibbertia arnhemica is a species of flowering plant in the family Dilleniaceae and is endemic to Arnhem Land in the Northern Territory. It is an erect shrub with hairy branchlets, egg-shaped or elliptic leaves and spikes of eight to fifteen yellow flowers, each with twenty to thirty stamens arranged on one side of the two carpels.

Contents

Description

Hibbertia arnhemica is a shrub that typically grows to a height of up to 1 m (3 ft 3 in), its branchlets densely hairy. The leaves are egg-shaped to elliptic, 63–71 mm (2.5–2.8 in) long and 3–45 mm (0.12–1.77 in) wide on a petiole 0.5–3 mm (0.020–0.118 in) long, the lower surface of the leaves densely hairy and much paler than the upper surface. The flowers are tightly arranged in spikes of eight to fifteen on the ends of branchlets on a thick peduncle 11–27 mm (0.43–1.06 in) long, with egg-shaped to elliptic bracts 13–21 mm (0.51–0.83 in) long. Each flower is 34–45 mm (1.3–1.8 in) in diameter, the outer sepals larger than the inner ones. The five petals are egg-shaped with the narrower end towards the base, yellow, 18–23 mm (0.71–0.91 in) long and there are twenty to thirty stamens arranged on one side of the two carpels, each carpel with two or three ovules. Flowering occurs in most months. [2] [3]

Taxonomy

Hibbertia arnhemica was first formally described in 2010 by Sally T. Reynolds in the journal Austrobaileya from specimens collected by Mike Lazarides near Mount Howship near the East Alligator River in 1972. [4] The specific epithet (arnhemica) refers to the area where this species is endemic. [2]

Distribution and habitat

This hibbertia grows in woodland on permenently wet, sandy soil in Arnhem Land. [2]

Conservation status

Goodenia arnhemica is classified as of "least concern" under the Northern Territory Government Territory Parks and Wildlife Conservation Act 1976. [3]

See also

Related Research Articles

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Hibbertia alopecota is a species of flowering plant in the family Dilleniaceae and is endemic to the Northern Territory. It is a low shrub with elliptic to lance-shaped leaves and yellow flowers arranged singly in leaf axils, with sixteen to twenty-four stamens arranged in bundles around two carpels.

Hibbertia angulata is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted area in the Northern Territory. It is an erect sub-shrub with sessile, linear leaves and yellow flowers arranged singly in leaf axils, with seventeen to nineteen stamens arranged in bundles around the three carpels.

Hibbertia araneolifera is a species of flowering plant in the family Dilleniaceae and is endemic to Queensland. It is a small shrub with wiry branches, narrow elliptic to lance-shaped leaves and yellow flowers arranged singly in leaf axils, with forty to forty-four stamens arranged around the three carpels.

Hibbertia argyrochiton is a species of flowering plant in the family Dilleniaceae and is endemic to northern parts of the Northern Territory. It is a shrub densely covered with scales and has elliptic to lance-shaped leaves, and yellow flowers usually arranged singly in leaf axils, with twenty to twenty-four stamens arranged in groups around the two carpels.

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Hibbertia bicarpellata is a species of flowering plant in the family Dilleniaceae and is endemic to northern Queensland. It is a shrub with hairy, ridged branches, elliptic leaves and yellow flowers arranged singly in leaf axils, with twenty to twenty-six stamens arranged in groups around the two carpels.

Hibbertia brennanii is a species of flowering plant in the family Dilleniaceae and is endemic to the Arnhem Land escarpment. It is a low, spreading sub-shrub with hairy foliage, elliptic to lance-shaped leaves and pale yellow flowers arranged singly in leaf axils, with ten to twelve stamens arranged in groups around the two carpels.

Hibbertia brevipedunculata is a species of flowering plant in the family Dilleniaceae and is endemic to northern Australia. It is a sub-shrub with hairy foliage, linear to lance-shaped leaves with the narrow end towards the base, and yellow flowers arranged singly on the ends of branches or short side shoots, with thirty to forty-four stamens arranged in bundles around the two carpels.

Hibbertia cactifolia is a species of flowering plant in the family Dilleniaceae and is endemic to the Arnhem Land escarpment. It is a multi-stemmed shrublet with hairy foliage, oblong to elliptic leaves and yellow flowers arranged singly in leaf axils, with twenty-six to twenty-eight stamens arranged in groups around the two carpels.

Hibbertia caudice is a species of flowering plant in the family Dilleniaceae and is endemic to northern Australia. It is a shrub with wiry stems, hairy foliage, elliptic to lance-shaped leaves with the narrower end towards the base, and yellow flowers arranged in leaf axils, mostly with twenty-four to twenty-six stamens arranged in groups around the two carpels.

Hibbertia ciliolata is a species of flowering plant in the family Dilleniaceae and is endemic to the northern part of the Northern Territory. It is a shrub with a single stem, hairy foliage, linear to elliptic leaves, and yellow flowers arranged in leaf axils, mostly with eighteen to twenty-six stamens arranged in groups around the two carpels.

Hibbertia cinerea is a species of flowering plant in the family Dilleniaceae and is endemic to the southern part of the Eyre Peninsula in South Australia. It is a densely-branched, hairy shrub with narrow elliptic to lance-shaped leaves, and yellow flowers arranged on the ends of branchlet, with nine to twelve stamens arranged in a group on one side of the two carpels.

Hibbertia circularis is a species of flowering plant in the family Dilleniaceae and is endemic to the northern part of the Northern Territory. It is a perennial herb with prostrate, trailing branches, elliptic to more or less round leaves, and yellow flowers arranged in leaf axils, with thirty stamens arranged in groups around the two carpels.

Hibbertia circumdans is a species of flowering plant in the family Dilleniaceae and is endemic to New South Wales. It is an erect shrub with hairy branches, linear to wedge-shaped or spatula-shaped leaves, and yellow flowers arranged on short side shoots, with fifteen to thirty stamens arranged in groups around the three carpels.

Hibbertia cistifolia is a species of flowering plant in the family Dilleniaceae and is endemic to northern Australia. It is a prostrate to low-lying sub-shrub with trailing, wiry stems, hairy foliage, oblong to elliptic leaves and yellow flowers arranged in leaf axils, with forty to fifty-eight stamens arranged around the two carpels.

References

  1. ↑ "Hibbertia arnhemica". Australian Plant Census. Retrieved 2 April 2021.
  2. 1 2 3 Reynolds, Sally T (1991). "New species of Hibbertia Andrews (Dilleniaceae) from Australia". Austrobaileya. 3 (3): 533.
  3. 1 2 "Hibbertia arnhemica". efloraNT. Retrieved 2 April 2021.
  4. ↑ "Hibbertia arnhemica". APNI. Retrieved 2 April 2021.
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