Jacksonia aculeata

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Jacksonia aculeata
Jacksonia aculeata.jpg
In Karijini National Park
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Genus: Jacksonia
Species:
J. aculeata
Binomial name
Jacksonia aculeata

Jacksonia aculeata is a species of flowering plant in the family Fabaceae and is endemic to the northern Australia. It is a spreading shrub with sharply-pointed, hairy, short side branches, leaves reduced to scales, lemon-yellow flowers, and woody, hairy pods.

Contents

Description

Jacksonia aculeata is a sturdy, spreading shrub that typically grows up to 0.15–1 m (5.9 in – 3 ft 3.4 in) high and 0.7–2 m (2 ft 4 in – 6 ft 7 in) wide, its branches greyish-green with sharply-pointed phylloclades about 0.7–1.5 mm (0.028–0.059 in) wide. Its leaves are reduced to narrowly egg-shaped scales, 1.3–3.0 mm (0.051–0.118 in) long and 0.6–1.0 mm (0.024–0.039 in) wide. The flowers are scattered along the branches in the axils of scale leaves on a pedicel 1.7–1.3 mm (0.067–0.051 in) long. There are narrowly egg-shaped bracteoles 0.6–1.7 mm (0.024–0.067 in) long on the pedicels. The floral tube is 0.6–1.1 mm (0.024–0.043 in) long and the sepals are membranous, the upper lobes 3.4–4 mm (0.13–0.16 in) long and 1.4–2.7 mm (0.055–0.106 in) wide, the lower lobes 3.2–5 mm (0.13–0.20 in) long, 1.0–1.5 mm (0.039–0.059 in) wide and fused at the base. The petals are lemon-yellow without markings, the standard petal 2.7–3.4 mm (0.11–0.13 in) long, the wings 2.8–3.6 mm (0.11–0.14 in) long, and the keel 2.5–2.9 mm (0.098–0.114 in) long. The stamens have pink filaments 1.9–3.3 mm (0.075–0.130 in) long. Flowering occurs from April to October, and the fruit is a woody, hairy pod 3.5–4.2 mm (0.14–0.17 in) long and 1.8–2 mm (0.071–0.079 in) wide. [2] [3] [4]

Taxonomy

Jacksonia aculeata was first formally described in 1918 by William Vincent Fitzgerald in Journal and Proceedings of the Royal Society of Western Australia from specimens he collected near the Fitzroy River. [3] [5] The specific epithet (aculeata) means 'prickly' referring to the scale leaves. [6]

Distribution and habitat

Jacksonia aculeata grows on sand dunes and sandplains from the eastern Pilbara to the Great Sandy and Tanami Deserts in northern Western Australia and the Northern Territory. [2] [4]

Related Research Articles

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Ricinocarpos megalocarpus is a species of flowering plant in the family Euphorbiaceae and is endemic to the south coast of Western Australia. It is a compact, rounded, usually monoecious shrub with linear leaves and white flowers, arranged either singly, or male flowers in groups, or with a single female flower surrounded by up to six male flowers.

<i>Ricinocarpos undulatus</i> Species of shrub

Ricinocarpos undulatus, commonly known as wedding bush, is a species of flowering plant in the family Euphorbiaceae and is endemic to the south-west of Western Australia. It is an erect, monoecious or dioecious shrub with linear leaves, and white flowers in a umbel with either a single male or female flower, 2 to 5 male flowers, or a single female flower surrounded by up to 3 male flowers.

Styphelia quartzitica is a species of flowering plant in the heath family Ericaceae and is endemic to a small area in the south of Western Australia. It is an erect shrub with hairy young branchlets, sharply-pointed, linear or very narrowly egg-shaped leaves, and cream-coloured, tube-shaped flowers.

<i>Jacksonia acicularis</i> Species of legume

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References

  1. ↑ "Jacksonia aculeata". Australian Plant Census. Retrieved 2 August 2024.
  2. 1 2 Chappill, Jennifer A.; Wilkins, Carolyn F.; Crisp, Michael D. (2007). "Taxonomic revision of Jacksonia (Leguminosae: Mirbelieae)". Australian Systematic Botany. 20 (6): 509–511.
  3. 1 2 Fitzgerald, William Vincent (1918). "The Botany of the Kimberleys, north-west Australia". Journal and Proceedings of the Royal Society of Western Australia. 3: 149. Retrieved 2 August 2024.
  4. 1 2 "Jacksonia aculeata". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  5. ↑ "Jacksonia aculeata". Australian Plant Name Index. Retrieved 2 August 2024.
  6. ↑ George, Alex; Sharr, Francis (2021). Western Australian Plant Names and Their Meanings (4th ed.). Kardinya, WA: Four Gables Press. p. 127. ISBN   9780958034180.
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