Jacksonia humilis

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Jacksonia humilis
Jacksonia humilis.jpg
Near Helms Arboretum, north of Esperance
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. humilis
Binomial name
Jacksonia humilis

Jacksonia humilis is a species of flowering plant in the family Fabaceae and is endemic to the south of Western Australia. It is a spreading to prostrate shrub with dull green branches, sharply-pointed phylloclades, yellow-orange flowers with red markings, and membranous, densely-hairy pods.

Contents

Description

Jacksonia humilis is a delicate, spreading to prostrate shrub that typically grows to 0.05–1 m (2.0 in – 3 ft 3.4 in) high and 0.3–0.4 m (1 ft 0 in – 1 ft 4 in) wide, its branches dull green and ribbed. Its end branches are sharply-pointed phylloclades, the leaves reduced to dark brown, egg-shaped scales, 0.9–1.9 mm (0.035–0.075 in) long and 0.6–0.9 mm (0.024–0.035 in) wide with toothed edges. The flowers are scattered along the branches, each flower on a pedicel 1.0–1.8 mm (0.039–0.071 in) long. There are egg-shaped bracteoles 0.9–1.3 mm (0.035–0.051 in) long and 0.45–0.6 mm (0.018–0.024 in) wide on the pedicels. The floral tube is 0.5–0.7 mm (0.020–0.028 in) long and the sepals are membranous, the lobes 5.2–5.7 mm (0.20–0.22 in) long, 1.6–1.9 mm (0.063–0.075 in) wide and fused at the base. The standard petal is yellow-orange with red markings, 5.6–5.9 mm (0.22–0.23 in) long and 6.7–7.0 mm (0.26–0.28 in) deep, the wings yellow, yellow-orange with red markings, 5.8–6.0 mm (0.23–0.24 in) long, and the keel is dark red, 5.5–5.6 mm (0.22–0.22 in) long. The stamens have dark red filaments, 3.3–5.7 mm (0.13–0.22 in) long. Flowering occurs from September to November, and the fruit is a membranous, densely hairy, elliptic pod, 4.7–5.0 mm (0.19–0.20 in) long and 3.0–3.3 mm (0.12–0.13 in) wide. [2] [3]

Taxonomy

Jacksonia humilis was first formally described in 2007 by Jennifer Anne Chappill in Australian Systematic Botany from specimens collected 40 km (25 mi) east of Jerramungup in 1992. [2] [4] The specific epithet (humilis) means 'low' or 'small'. [5]

Distribution and habitat

This species of Jacksonia grows in woodland in sand or sandy clay between the southern Stirling Range to Munglinup in the Esperance Plains, Jarrah Forest and Mallee bioregions of southern Western Australia. [2] [3]

Conservation status

Jacksonia humilis is listed as "not threatened" by the Government of Western Australia Department of Parks and Wildlife. [3]

Related Research Articles

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

Jacksonia sericea, commonly known as waldjumi, is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a spreading to prostrate shrub with greyish-green branches, straight, sharply-pointed side branches, leaves reduced to scales, orange flowers with red markings, and woody, densely hairy pods.

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

Jacksonia lehmannii is a is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an erect to prostrate or spreading, spindly shrub with greyish-green branches, sharply-pointed side branches, its leaves reduced to scales leaves, yellowish-orange flowers with orange-red markings, and woody, hairy pods.

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

Jacksonia horrida is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an erect or spreading to prostrate, bushy shrub with greyish-green branches ending in short, flattened, sharply-pointed side branches, the leaves reduced to scales and the flowers scattered and yellow-orange with red markings.

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

Jacksonia anthoclada is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an erect, single-stemmed shrub with hairy, elliptic to egg-shaped phylloclades with sharply-pointed edges, yellow-orange flowers with red markings, and hairy, woody pods.

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

Jacksonia alata is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a tufted, semi-prostrate to erect shrub with flattened branches, sharply-pointed side branches or phylloclades, leaves reduced to narrowly lance-shaped scales, yellow-orange flowers with a red "eye", and woody, densely hairy pods.

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

Jacksonia angulata is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a tufted, spreading to prostrate shrub often with zig-zagged branches, sharply-pointed side branches or phylloclades, leaves reduced to broadly egg-shaped scales, yellow-orange to orange flowers with a red "eye", and woody, densely hairy pods.

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

Jacksonia arenicola is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an erect, broom-like shrub with densely hairy, sharply-pointed phylloclades, yellow-orange flowers with red markings, and woody pods that are hairy at first, later glabrous.

Jacksonia arida is a species of flowering plant in the family Fabaceae and is endemic to Western Australia. It is an erect or prostrate shrub with tangled branches, sharply-pointed branchlets, yellow-orange to orange flowers, and woody pods.

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

Jacksonia calcicola is a species of flowering plant in the family Fabaceae and is endemic to the south west of Western Australia. It is a prostrate spreading or erect, prickly shrub with short, curved backwards and sharply pointed end branches, yellow-orange flowers with red markings, and woody, hairy pods.

Jacksonia carduacea is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a bushy shrub with its end-branches elliptic to egg-shaped phylloclades, and yellow-orange flowers in clusters in the axils of phylloclades.

Jacksonia chappilliae is a species of flowering plant in the family Fabaceae and is endemic to a restricted area of northern New South Wales. It is an erect shrub with its end-branches sharply-pointed phylloclades, and yellow-orange flowers with red markings scattered along the branches.

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

Jacksonia compressa is a species of flowering plant in the family Fabaceae and is endemic to the south west of Western Australia. It is an erect, bushy shrub with sharply pointed end branches, yellow-orange flowers with red markings, and woody, hairy pods.

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

Jacksonia debilis is a species of flowering plant in the family Fabaceae and is endemic to the south west of Western Australia. It is a spreading to prostrate shrub with curved phylloclades, yellow-orange flowers with red markings, and woody, hairy pods.

Jacksonia dendrospinosa is a species of flowering plant in the family Fabaceae and is endemic to the far west of Western Australia. It is a dense, erect shrub or tree with straight, sharply-pointed branches, leaves reduced to scales, scattered yellow-orange flowers with red markings, and membranous, hairy pods.

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

Jacksonia elongata is a species of flowering plant in the family Fabaceae and is endemic to the south of Western Australia. It is an erect or spreading, spindly shrub with yellowish-green branches, yellow-orange flowers with red markings, and woody, densely-hairy pods.

Jacksonia epiphyllum is a species of flowering plant in the family Fabaceae and is endemic to the south of Western Australia. It is an erect or straggling shrub, the end branches egg-shaped or elliptic phylloclades, the leaves reduced to scale leaves, the flowers yellow-orange with red markings, and woody, densely-hairy pods.

Jacksonia eremodendron is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a straggling shrub to small tree, the end branches egg-shaped, elliptic or oblong phylloclades with sharply-pointed teeth on the edges, the flowers yellow-orange with red markings and attached to teeth on phylloclades, and woody, densely-hairy pods.

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

Jacksonia forrestii, commonly known as broom bush, is a species of flowering plant in the family Fabaceae and is endemic to the north-west of Australia. It is an erect, slender, weeping shrub or tree with sharply pointed phylloclades, yellow to yellow-orange flowers without markings, and woody, hairy pods.

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

Jacksonia grevilleoides is a species of flowering plant in the family Fabaceae and is endemic to the south west of Western Australia. It is a prostrate or erect shrub with variably-shaped phylloclades, yellow-orange flowers and woody, densely hairy pods.

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

Jacksonia hakeoides is a species of flowering plant in the family Fabaceae and is endemic to the south west of Western Australia. It is a low, densely-branched shrub with sharply-pointed end branches, the leaves reduced to scales, yellow-orange to orange flowers with red markings, and woody, densely hairy pods.

References

  1. ↑ "Jacksonia humilis". Australian Plant Census. Retrieved 21 November 2024.
  2. 1 2 3 Chappill, Jennifer A.; Wilkins, Carolyn F.; Crisp, Michael D. (2007). "Taxonomic revision of Jacksonia (Leguminosae: Mirbelieae)". Australian Systematic Botany. 20 (6): 580–581.
  3. 1 2 3 "Jacksonia humilis". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. ↑ "Jacksonia humilis". Australian Plant Name Index. Retrieved 21 November 2024.
  5. ↑ George, Alex; Sharr, Francis (2021). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 220. ISBN   9780958034180.
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