Swainsona halophila

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Swainsona halophila
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: Swainsona
Species:
S. halophila
Binomial name
Swainsona halophila

Swainsona halophila is a species of flowering plant in the family Fabaceae and is endemic to inland areas of Western Australia. It is usually a prostrate annual herb with imparipinnate leaves with 9 to 13 egg-shaped to broadly wedge-shaped leaflets, and racemes of 2 to 9 purple flowers.

Contents

Description

Swainsona halophila is usually a prostrate, rarely an ascending annual herb, that typically grows to a height of about 15 cm (5.9 in) and has several stems 0.5–1.5 mm (0.020–0.059 in) wide. Its leaves are imparipinnate 10–80 mm (0.39–3.15 in) long with 9 to 13 egg-shaped to broadly wedge-shaped leaflets with the narrower end towards the base, 1–7 mm (0.039–0.276 in) long and 1–5 mm (0.039–0.197 in) wide. There is a stipule 1–4 mm (0.039–0.157 in) long at the base of the petiole. The flowers are arranged in racemes 10–150 mm (0.39–5.91 in) long with 2 to 9 flowers on a peduncle 0.5–1.5 mm (0.020–0.059 in) long, each flower 6–8 mm (0.24–0.31 in) long in on a dark, softly hairy pedicel 1–3 mm (0.039–0.118 in) long. The sepals are joined at the base, forming a tube 1.5–2.0 mm (0.059–0.079 in) long, the sepal lobes shorter than the tube. The petals are purple, the standard petal 6–9 mm (0.24–0.35 in) long and 7–9 mm (0.28–0.35 in) wide, the wings 6–8 mm (0.24–0.31 in) long, and the keel 6–8 mm (0.24–0.31 in) long. Flowering occurs from July to September, and the fruit is an elliptic pod about 15 mm (0.59 in) long and 7 mm (0.28 in) wide with a stalk about 1 mm (0.039 in) long and the remains of the style about 4 mm (0.16 in) long. [2] [3]

Taxonomy

Swainsona halophila was first formally described in 1993 by Joy Thompson in the journal Telopea from specimens collected near "Mt Sir Samuel, near Lawlers", by Charles Gardner in 1931. [2] [4] The specific epithet (halophila) means "salt-loving". [2]

Distribution and habitat

This species of Swainsona grows on clay flats and near salt lakes in the Gascoyne and Murchison bioregions of inland Western Australia. [3]

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<i>Swainsona brachycarpa</i> Species of plant

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<i>Swainsona burkei</i> Species of plant endemic to Australia

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<i>Swainsona campestris</i> Species of legume

Swainsona campestris is a species of flowering plant in the family Fabaceae and is endemic to arid areas of southern Australia. It is an erect perennial herb with imparipinnate leaves with 9 to 11 linear to narrowly lance-shaped leaflets, and racemes of pink or purple flowers in racemes of 5 to 10.

<i>Swainsona campylantha</i> Species of legume

Swainsona campylantha, commonly known as Gilgai Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to inland areas of Australia. It is a low-growing perennial with imparipinnate leaves usually with up to 7 narrowly lance-shaped to narrowly elliptic leaflets, and racemes of 2 to 10 pink to purple flowers.

Swainsona cyclocarpa is a species of flowering plant in the family Fabaceae and is endemic to northern inland areas of Australia. It is a prostrate or low-growing annual with imparipinnate leaves usually with up to 7 usually egg-shaped leaflets with the narrower end towards the base, and racemes of 4 to 16 purple flowers.

Swainsona disjuncta is a species of flowering plant in the family Fabaceae and is endemic to widely separated areas of central Australia. It is a prostrate perennial herb with imparipinnate leaves with 3 to 9 egg-shaped leaflets, and racemes of purple, pink or red flowers in racemes of 3 to 15.

<i>Swainsona elegans</i> Species of legume

Swainsona elegans is a species of flowering plant in the family Fabaceae and is endemic to Western Australia. It is a prostrate or ascending annual with imparipinnate leaves, usually with 7 to 15 egg-shaped or elliptic leaflets, and racemes of up to 15 blue or reddish-purple flowers.

Swainsona eremaea is a species of flowering plant in the family Fabaceae and is endemic to South Australia. It is a low-growing, spreading, probably perennial plant with imparipinnate leaves with 5 to 11 linear, oblong to broadly wedge-shaped leaflets, and racemes of bright red to brown or yellow flowers in racemes of 5 to 20.

Swainsona fissimontana is a species of flowering plant in the family Fabaceae and is endemic to inland areas of southern continental Australia. It is a compact, erect or upright perennial herb with imparipinnate leaves with 7 to 13 narrowly elliptic to elliptic leaflets, and racemes of pink to dark purplish flowers in racemes of 3 to 11.

Swainsona fuscoviridis is a species of flowering plant in the family Fabaceae and is endemic to South Australia. It is a perennial plant with many stems and imparipinnate leaves with mostly 7 or 9 ellipitic, linear or egg-shaped or lance-shaped leaflets, and racemes of 12 to 20 purple flowers.

Swainsona gracilis 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 ascending perennial herb with imparipinnate leaves with up to 15 wedge-shaped or narrowly oblong leaflets, and racemes of up to 4 purple or blue flowers.

Swainsona incei is a species of flowering plant in the family Fabaceae and is endemic to inland Western Australia. It is an erect or ascending annual, sometimes perennial herb with imparipinnate leaves with 5 to 9 lance-shaped to elliptic leaflets, and racemes of 2 to 30 purple flowers.

Swainsona kingii is a species of flowering plant in the family Fabaceae and is endemic to the Western Australia. It is a prostrate or ascending annual or perennial herb, with imparipinnate leaves with usually 5 egg-shaped leaflets with the narrower end towards the base, and racemes of 1 to 3 pink to purple flowers.

<i>Swainsona laciniata</i> Species of legume

Swainsona laciniata is a species of flowering plant in the family Fabaceae and is endemic to north-western Australia. It is a prostrate or ascending perennial herb with imparipinnate leaves with 7 to 13 broadly elliptic to broadly egg-shaped leaflets, and racemes of 3 to 8 purple flowers.

Swainsona leeana is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Australia. It is a small prostrate perennial, possible perennial with imparipinnate leaves with 5 to 7 broadly egg-shaped or elliptic leaflets, and racemes of up to 3 purple or yellow flowers.

Swainsona longicarinata is a prostrate or ascending perennial herb in the pea family and is endemic to the far west of Western Australia. It has 5 to 11 variably-shaped leaflets, and racemes of about 7, usually purple flowers.

Swainsona luteola is a species of flowering plant in the family Fabaceae and is endemic to the eastern Australia. It is a prostrate or low-lying to semi-erect perennial with imparipinnate leaves with usually 3 to 17 narrowly elliptic leaflets, and racemes of 5 to 15 purple, sometimes yellow flowers.

Swainsona microcalyx, commonly known as wild violet, is a species of flowering plant in the family Fabaceae and is endemic to southern mainland Australia. It is a prostrate or low-growing perennial herb, with imparipinnate leaves with 5 to 9 broadly egg-shaped to wedge-shaped leaflets and racemes of 5 to 15 purple flowers.

References

  1. ↑ "Swainsona halophila". Australian Plant Census. Retrieved 6 February 2024.
  2. 1 2 3 Thompson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 485–486. Retrieved 6 February 2024.
  3. 1 2 "Swainsona halophila". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. ↑ "Swainsona halophila". Australian Plant Name Index. Retrieved 6 February 2024.
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