Hibbertia acrotrichion

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Hibbertia acrotrichion
Status DECF P2.svg
Priority Two — Poorly Known Taxa (DEC)
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Dilleniales
Family: Dilleniaceae
Genus: Hibbertia
Species:
H. acrotrichion
Binomial name
Hibbertia acrotrichion

Hibbertia acrotrichion is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted area of Western Australia. It is a small, erect shrub with linear, cylindrical leaves and yellow flowers arranged singly in leaf axils with eleven stamens arranged in groups.

Contents

Description

Hibbertia acrotrichion is an erect shrub that typically grows to a height of up to 30 cm (12 in) with hairy new growth. The leaves are crowded and spirally arranged along short side shoots, linear and more or less cylindrical, 4–7 mm (0.16–0.28 in) long and 0.5–0.7 mm (0.020–0.028 in) wide. The flowers are arranged singly in leaf axils on short side shoots, 10–14 mm (0.39–0.55 in) wide with up to three broadly egg-shaped bracts 1–3 mm (0.039–0.118 in) long. The five sepals are dark green, broadly elliptic, the outer sepals 3.5–4.5 mm (0.14–0.18 in) long and the inner sepals 4–6 mm (0.16–0.24 in) long. The five petals are yellow, 6–7 mm (0.24–0.28 in) long and egg-shaped with the narrower end towards the base. The eleven stamens are arranged in three groups of three and two single stamens. The three carpels are glabrous and there is one ovule per carpel. Flowering has been recorded in August and September. [2] [3]

Taxonomy

Hibbertia acrotrichion was first formally described in 2004 by Judith R. Wheeler in the journal Nuytsia from specimens she collected in the Fitzgerald River National Park in 2001. [2] [4] The specific epithet (acrotrichion) is derived from Greek and means "small hairs at the tip", referring to the small tuft of hairs at the tip of otherwise glabrous leaves. [2]

Distribution and habitat

This hibbertia grows in sandy soil in heath or mallee heath between Bremer Bay and Ravensthorpe in the Esperance Plains biogeographic region in the south-west of Western Australia. [2] [3]

Conservation status

Hibbertia acrotrichion is classified as "Priority Two" by the Western Australian Government Department of Parks and Wildlife [3] meaning that it is poorly known and from only one or a few locations. [5]

See also

Related Research Articles

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Hibbertia ancistrotricha is a species of flowering plant in the family Dilleniaceae and is endemic to the south-west of Western Australia. It is a shrub with narrow oblong to linear leaves and bright yellow flowers arranged singly in leaf axils with about ten stamens fused at their bases on one side of the carpels.

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Hibbertia depilipes is a species of flowering plant in the family Dilleniaceae and is endemic to the far south-west of Western Australia. It is usually a sprawling shrub with scattered linear leaves and yellow flowers arranged singly in leaf axils usually with ten stamens all on one side of the two carpels.

<i>Hibbertia glaberrima</i> Species of flowering plant

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<i>Hibbertia glomerosa</i> Species of flowering plant

Hibbertia glomerosa is a species of flowering plant in the family Dilleniaceae and is endemic to the south-west of Western Australia. It is a shrub with linear to narrow oblong leaves and bright yellow flowers borne on the ends of short side shoots, with twenty-five to thirty-eight stamens arranged in groups of five around the five glabrous carpels.

<i>Hibbertia hibbertioides</i> Species of flowering plant

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Hibbertia hooglandii is a species of flowering plant in the family Dilleniaceae and is endemic to the Kimberley region of Western Australia. It is a small, erect or spreading, multi-stemmed shrub with linear leaves and golden yellow flowers arranged singly in leaf axils, with seventeen to twenty-five stamens, all on one side of two densely hairy carpels.

<i>Hibbertia huegelii</i> Species of flowering plant

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Hibbertia lepidocalyx is a species of flowering plant in the family Dilleniaceae and is endemic to Western Australia. It is a shrub with thick, linear, cylindrical leaves and yellow flowers with nine or ten stamens in a single group on one side of the two carpels.

<i>Hibbertia leptopus</i> Species of flowering plant

Hibbertia leptopus is a species of flowering plant in the family Dilleniaceae and is endemic to Western Australia. It is an erect shrub with linear leaves and yellow flowers, usually with eleven stamens arranged around the three carpels.

Hibbertia oligantha is a species of flowering plant in the family Dilleniaceae and is endemic to the south-west of Western Australia. It is a shrub with linear leaves and yellow flowers with six to ten stamens on one side of two glabrous carpels.

Hibbertia papillata is a species of flowering plant in the family Dilleniaceae and is endemic to the Fitzgerald River National Park in Western Australia. It is an erect shrub with crowded, linear, hairy leaves and yellow flowers usually with ten stamens, all on one side of, and curving over two hairy carpels.

<i>Hibbertia porongurupensis</i> Species of flowering plant

Hibbertia porongurupensis is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted area of the south-west of Western Australia. It is a glabrous shrub with broadly elliptic to more or less round leaves and yellow flowers arranged singly in leaf axils with large numbers of stamens arranged around five carpels.

Hibbertia psilocarpa is a species of flowering plant in the family Dilleniaceae and is endemic to the south-west of Western Australia. It is a shrub with spirally arranged, narrow oblong to linear leaves and yellow flowers usually with four to eight stamens, all on one side two glabrous carpels.

References

  1. ↑ "Hibbertia acrotrichion". Australian Plant Census. Retrieved 23 March 2021.
  2. 1 2 3 4 Wheeler, Judith R. (2004). "A review of Hibbertia hemignosta and its allies (Dilleniaceae) from Western Australia" (PDF). Nuytsia. 15 (2): 279–281. Retrieved 20 March 2021.
  3. 1 2 3 "Hibbertia acrotrichion". FloraBase . Western Australian Government Department of Parks and Wildlife.
  4. ↑ "Hibbertia acrotrichion". APNI. Retrieved 20 March 2021.
  5. ↑ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 20 March 2021.
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