Hibbertia oligocarpa

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Hibbertia oligocarpa
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Dilleniales
Family: Dilleniaceae
Genus: Hibbertia
Species:
H. oligocarpa
Binomial name
Hibbertia oligocarpa

Hibbertia oligocarpa is a species of flowering plant in the family Dilleniaceae and is only known from a single specimen collected near a waterfall near Gunbalanya in the Northern Territory. It is a shrublet with trailing stems, narrow elliptic leaves and yellow flowers with 46 to 58 stamens arranged in groups around four carpels.

Contents

Description

Hibbertia oligocarpa is a shrublet has only a few trailing or scrambling stems. The foliage is covered with bundled, rosette-like hairs. The leaves are narrow elliptic, 6.5–13 mm (0.26–0.51 in) long and 2.5–3.5 mm (0.098–0.138 in) wide on a petiole 0.2–1.1 mm (0.0079–0.0433 in) long, with the edges curved downwards. The flowers are arranged singly, sometimes in clusters on short side shoots on a peduncle 6–10 mm (0.24–0.39 in) long, with linear bracts 1.5–2.2 mm (0.059–0.087 in) long at the base of the peduncle. The five sepals are joined at the base and densely scaly on the outside, the two outer sepal lobes 2.8–3.5 mm (0.11–0.14 in) long and the three inner lobes 4.3–4.9 mm (0.17–0.19 in) long. The five petals are yellow and egg-shaped with the narrower end towards the base, 5.2–7.6 mm (0.20–0.30 in) long. There are 46 to 58 stamens in bundles around four carpels, each with two ovules. Flowering has been observed in May. [2] [3]

Taxonomy

Hibbertia oligocarpa was first formally described in 2010 by Hellmut R. Toelken in the Journal of the Adelaide Botanic Gardens from specimens collected near Gunbalanya (formerly known as Oenpelli) by Joseph Zvonko Weber in 1988. [2] [4] The specific epithet (oligocarpa) means "few-fruited". [2]

Distribution and habitat

This hibbertia is only known from the type collection that was growing over rocks near a waterfall near Gunbalanya in the Northern Territory. [2]

See also

Related Research Articles

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Hibbertia malacophylla is a species of flowering plant in the family Dilleniaceae and is endemic to Queensland. It is a spreading shrub with densely hairy foliage, elliptic leaves, and single yellow flowers arranged in leaf axils with 50 to 55 stamens arranged around the two carpels.

Hibbertia malleolacea is a species of flowering plant in the family Dilleniaceae and is endemic to the northern parts of the Northern Territory. It is a straggly shrub with hairy foliage, elliptic leaves, and yellow flowers arranged in leaf axils with 28 to 32 stamens arranged in bundles around three carpels.

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Hibbertia oligocarpa is a species of flowering plant in the family Dilleniaceae and is endemic to part of the Arnhem Land plateau in the Northern Territory. It is a shrublet with spreading branches, broadly elliptic to round leaves and yellow flowers with 35 to 40 stamens arranged in groups around 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 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.

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 oligocarpa". Australian Plant Census. Retrieved 30 June 2021.
  2. 1 2 3 4 Toelken, Hellmut R. (2010). "Notes on Hibbertia I. New taxa from south-eastern Australia" (PDF). Journal of the Adelaide Botanic Gardens. 16: 87–88. Retrieved 1 August 2021.
  3. ↑ "Hibbertia oligocarpa". Northern Territory Government. Retrieved 1 August 2021.
  4. ↑ "Hibbertia oligocarpa". APNI. Retrieved 1 August 2021.
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