Hibbertia malleolacea

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

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.

Contents

Description

Hibbertia malleolacea is a straggly shrub with few branches and that typically grows to a height of up to 1 m (3 ft 3 in) high, the foliage covered with rosette-like hairs. The leaves are elliptic to lance-shaped with the narrower end towards the base, 10–20 mm (0.39–0.79 in) long and 2–4.5 mm (0.079–0.177 in) wide on a petiole 0.2–1.2 mm (0.0079–0.0472 in) long. The flowers are arranged at the ends of branches on a thread-like peduncle 6–16 mm (0.24–0.63 in) long, with linear to lance-shaped bracts 1.1–1.4 mm (0.043–0.055 in) long. The five sepals are joined at the base, the two outer sepal lobes 2.4–2.9 mm (0.094–0.114 in) long and the inner lobes 4.2–4.5 mm (0.17–0.18 in) long. The five petals are broadly egg-shaped with the narrower end towards the base, yellow, 4.4–5.8 mm (0.17–0.23 in) long and there are 28 to 32 stamens arranged in bundles around the three carpels, each carpel with two ovules. Flowering occurs from December to June. [2]

Taxonomy

Hibbertia malleolacea was first formally described in 2010 by Hellmut R. Toelken in the Journal of the Adelaide Botanic Gardens from specimens collected near Jabiru in 1980. [2] [3] The specific epithet (malleolacea) means "like a mallet", referring to the shape of the peduncle. [2]

Distribution and habitat

This hibbertia grows in sandstone crevices in heath on the Arnhem Land Plateau. [2] [4]

Conservation status

Hibbertia malleolacea is classified as of "least concern" under the Territory Parks and Wildlife Conservation Act 1976 . [4]

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.

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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 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 rufociliata is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted area of north Queensland. It is a shrub with hairy foliage, elliptic to lance-shaped leaves with the narrower end towards the base, and yellow flowers usually arranged singly in leaf axils with 36 to 44 stamens arranged in bundles around two densely scaly carpels.

References

  1. ↑ "Hibbertia malleolacea". Australian Plant Census. Retrieved 14 July 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: 96–97. Retrieved 14 July 2021.
  3. ↑ "Hibbertia malleolacea". APNI. Retrieved 14 July 2021.
  4. 1 2 "Hibbertia malleolacea". Northern Territory Government. Retrieved 14 July 2021.
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