Hibbertia tridentata

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

Hibbertia tridentata is a species of flowering plant in the family Dilleniaceae and is only known from a single population in Arnhem Land in the Northern Territory. It is a shrub with a few wiry branches, egg-shaped to triangular leaves with the narrower end towards the base, and yellow flowers usually arranged singly in leaf axils with eighteen to twenty stamens arranged around two densely scaly carpels.

Contents

Description

Hibbertia tridentata is a shrub with a few wiry branches up to 60 cm (24 in), the foliage mostly covered with rosette-like hairs. The leaves are egg-shaped to triangular with the narrower end towards the base, mostly 12.5–16 mm (0.49–0.63 in) long and 9–12 mm (0.35–0.47 in) wide on a petiole 0.3–1.1 mm (0.012–0.043 in) long. The flowers are usually arranged singly in leaf axils on a thread-like peduncle 4.4–10.8 mm (0.17–0.43 in) long, with linear bracts 2.6–3.5 mm (0.10–0.14 in) long at the base. The five sepals are joined at the base, the two outer sepal lobes lance-shaped, 5.2–6.1 mm (0.20–0.24 in) long and about 2 mm (0.079 in) wide, and the inner lobes about slightly broader. The five petals are oblong, yellow, 2.4–3.1 mm (0.094–0.122 in) long with a small notch at the tip and there are eighteen to twenty stamens arranged around the two densely scaly carpels, each carpel with two ovules. [2]

Taxonomy

Hibbertia tridentata was first formally described in 2010 by Hellmut R. Toelken in the Journal of the Adelaide Botanic Gardens from a specimen collected near Maningrida in 2000. [2] [3] The specific epithet (tridentata) means "three-toothed", referring to the leaves. [2]

Distribution

This hibbertia is only known from a single location where it grows on scree slopes in heath-like scrub in Arnhem Land. [2]

Conservation status

Hibbertia tridentata is classified as "data deficient" under the Northern Territory Government Northern Territory Government Territory Parks and Wildlife Conservation Act 1976 . [4]

See also

Related Research Articles

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 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.

Hibbertia auriculiflora is a species of flowering plant in the family Dilleniaceae and is endemic to northern parts of the Northern Territory. It is usually a short-lived perennial shrublet covered with hairs and scales and has mostly oblong to linear leaves. The flowers are usually arranged singly or in groups of two or three in leaf axils, with twenty-five to thirty-two 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 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 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 fractiflexa is a species of flowering plant in the family Dilleniaceae and is endemic to the Northern Territory. It is a small, multi-stemmed shrub with hairy foliage, elliptic leaves, and yellow flowers arranged in leaf axils with sixteen to twenty-two stamens arranged in groups around the two 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 incurvata is a species of flowering plant in the family Dilleniaceae and is endemic to the Northern Territory. It is a spreading, woody shrub with scaly foliage, elliptic to lance-shaped leaves, and yellow flowers arranged in leaf axils with 28 to 35 stamens arranged in bundles around the two carpels.

Hibbertia ligulata is a species of flowering plant in the family Dilleniaceae and is endemic to the Northern Territory. It is a shrublet with hairy, wiry branches, linear leaves, and single yellow flowers arranged in leaf axils with twelve stamens arranged in bundles around the two carpels.

Hibbertia marrawalina is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted part of the Northern Territory. It is a shrublet with scaly foliage, wiry branches, narrow linear leaves, and yellow flowers arranged singly in leaf axils with fifteen to eighteen stamens and about seven staminodes arranged in bundles around two scaly carpels.

Hibbertia oblongata is a species of flowering plant in the family Dilleniaceae and is endemic to northern Australia. It is an erect to spreading shrub with scaly foliage, elliptic to oblong leaves, and yellow flowers usually arranged singly in leaf axils, with 16 to 36 stamens arranged in bundles around the two carpels.

Hibbertia pancerea is a species of flowering plant in the family Dilleniaceae and is endemic to Kakadu National Park. It is a spreading shrub foliage densely covered with shield-like scales, that has elliptic leaves and yellow flowers arranged singly in leaf axils with 26 to 30 stamens arranged in bundles around two carpels.

Hibbertia scabra is a species of flowering plant in the family Dilleniaceae and is endemic to the north of the Northern Territory. It is a small shrub with hairy foliage, linear to narrow elliptical leaves and yellow flowers arranged singly near the ends of branches with about fifty stamens arranged around two densely scaly carpels.

Hibbertia scopata is a species of flowering plant in the family Dilleniaceae and is endemic to the Northern Kimberley region of Western Australia. It is a small shrub with wiry branches, lance-shaped leaves with the narrower end towards the base, and yellow flowers arranged singly along the branches, with thirteen to fifteen stamens arranged in groups around two densely scaly carpels.

Hibbertia solanifolia is a species of flowering plant in the family Dilleniaceae and is endemic to the Top End of the Northern Territory in Australia. It is a spreading to low-lying shrub with ridged branches, elliptic leaves and yellow flowers usually arranged singly in leaf axils, with 34 to 38 stamens arranged in groups around three densely scaly carpels.

Hibbertia suffrutescens is a species of flowering plant in the family Dilleniaceae and is endemic to the Northern Kimberley region of Western Australia. It is a small shrub with wiry branches, narrowly lance-shaped leaves with the narrower end towards the base, and yellow flowers arranged singly along the branches, with 30 to 36 stamens arranged in groups around two densely scaly carpels.

Hibbertia sulcata is a species of flowering plant in the family Dilleniaceae and is only known from a single specimen collected in Arnhem Land in the Northern Territory. It is a small, sprawling shrub with wiry branches, linear leaves and yellow flowers arranged singly or in pairs in leaf axils with 22 to 24 stamens arranged in groups around two densely scaly carpels.

Hibbertia tricornis is a species of flowering plant in the family Dilleniaceae and is only known from a three specimens collected in Arnhem Land in the Northern Territory. It is a small, more or less prostrate shrublet with a few delicate, wiry branches, elliptic leaves and yellow flowers arranged singly in leaf axils with 19 to 24 stamens arranged in groups around two densely scaly carpels.

References

  1. ↑ "Hibbertia tridentata". Australian Plant Census. Retrieved 30 November 2021.
  2. 1 2 3 4 Toelken, Hellmut R. (2010). "Notes on Hibbertia (Dilleniaceae) 5. H. melhanioides and H. tomentosa groups from tropical Australia" (PDF). Journal of the Adelaide Botanic Gardens. 23: 59–60. Retrieved 30 November 2021.
  3. ↑ "Hibbertia tridentata". APNI. Retrieved 30 November 2021.
  4. ↑ "Hibbertia tricornis". Northern Territory Government. Retrieved 30 November 2021.
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