Hibbertia arnhemica

Hibbertia arnhemica
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Dilleniales
Family:	Dilleniaceae
Genus:	Hibbertia
Species:	H. arnhemica
Binomial name
	Hibbertia arnhemica; S.T.Reynolds

Last updated January 01, 2025

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.

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 1991 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 permanently 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]

Related Research Articles

Hibbertia sericea, commonly known as silky guinea-flower, is a species of flowering plant in the family Dilleniaceae and is endemic to south-eastern Australia. It is an erect or spreading shrub with softly-hairy branches, elliptic to egg-shaped leaves with the narrower end towards the base, and yellow flowers with eight to fourteen stamens in a cluster on one side of two hairy carpels.

Hibbertia atrichosepala is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted area in the south-west of Western Australia. It is an upright shrub with crowded linear to tapering leaves and yellow flowers arranged singly in leaf axils with glabrous sepals and the five stamens all on one side of the two carpels.

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 banksii is a species of flowering plant in the family Dilleniaceae and is native to Queensland and New Guinea. It is a shrub with thick, leathery leaves and yellow flowers with about twenty to forty-eight stamens arranged on one side of 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 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 cymosa is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted area of Queensland. It is a shrub with densely hairy foliage, elliptic leaves, and yellow flowers, each with fifty to eighty stamens arranged in bundles around three carpels.

Hibbertia eciliata is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted area of Queensland. It is a sparsely-branched shrub with densely hairy foliage, elliptic and yellow flowers arranged singly on the ends of branchlets, with between fifty and fifty-four stamens arranged in groups around the two carpels.

Hibbertia extrorsa is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted part of the Northern Territory. It is a small, spreading shrub with hairy foliage, linear to elliptic leaves, and yellow flowers arranged in leaf axils with about thirty stamens arranged in groups around the two carpels.

Hibbertia florida is a species of flowering plant in the family Dilleniaceae and is endemic to New South Wales. It is a small shrub with oblong to lance-shaped leaves and yellow flowers arranged on the ends of branchlets, with twelve to twenty-eight stamens arranged around three carpels.

Hibbertia guttata is a species of flowering plant in the family Dilleniaceae and is endemic to the Northern Territory. It is a straggly shrub with moderately to densely hairy foliage, linear to elliptic leaves, and yellow flowers arranged in leaf axils with 28 to 36 stamens arranged in groups around the three carpels.

Hibbertia hendersonii is a species of flowering plant in the family Dilleniaceae and is endemic to the Blackdown Tableland in Queensland. It is an erect shrub with densely hairy foliage, narrow elliptic leaves, and yellow flowers, each usually with twenty to thirty-one stamens arranged on one side of the two carpels.

Hibbertia horricomis is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted area of New South Wales. It is a small, erect to spreading shrub with hairy foliage, linear to elliptic leaves, and yellow flowers with about twenty stamens arranged around the two hairy carpels.

Hibbertia laurana is a species of flowering plant in the family Dilleniaceae and is endemic to far northern Queensland. It is a shrub with hairy foliage, elliptic leaves, and yellow flowers, each with thirty to fifty stamens arranged in rows on one side of the two hairy carpels.

Hibbertia lividula is a species of flowering plant in the family Dilleniaceae and is endemic to the south-west of Western Australia. It is an erect or sprawling shrub with thin branchlets, bluish-grey, narrow elliptic to narrow oblong leaves and yellow flowers, with thirty to forty stamens arranged around the five glabrous carpels.

Hibbertia mulligana is a species of flowering plant in the family Dilleniaceae and is endemic to north-eastern Queensland. It is a sub-shrub with narrow elliptic leaves and yellow flowers with 70 to 74 stamens arranged around three densely hairy carpels.

Hibbertia oligodonta is a species of flowering plant in the family Dilleniaceae and is endemic to central Queensland. It is a low, compact shrub with many stems and egg-shaped or wedge-shaped leaves with the narrower end towards the base, and yellow flowers with 22 to 38 stamens arranged around three glabrouscarpels.

Hibbertia orientalis is a species of flowering plant in the family Dilleniaceae and is endemic to Finch Island and White Islet in the Sir Edward Pellew Group. It is a small shrub with wiry branches, narrow lance-shaped leaves with the narrower end towards the base, and yellow flowers arranged singly on the ends of branchlets with 30 to 36 stamens arranged around two carpels.

Hibbertia pilulis is a species of flowering plant in the family Dilleniaceae and is endemic to Arnhem Land in the Northern Territory. It is a straggly shrub with hairy foliage, elliptic leaves and yellow flowers arranged singly in leaf axils with 34 to 46 stamens arranged in bundles around two carpels.

References

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

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[APC-1] "Hibbertia arnhemica". Australian Plant Census. Retrieved 2 April 2021.

[S.T.Reynolds-2] 1 2 3 Reynolds, Sally T (1991). "New species of Hibbertia Andrews (Dilleniaceae) from Australia". Austrobaileya. 3 (3): 533.

[efloraNT-3] 1 2 "Hibbertia arnhemica". efloraNT. Retrieved 2 April 2021.

[APNI-4] "Hibbertia arnhemica". APNI. Retrieved 2 April 2021.

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