Swainsona murrayana

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Slender Darling-pea
Swainsona murrayana.jpg
Near Collingullie
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. murrayana
Binomial name
Swainsona murrayana
Synonyms [1]
  • Swainsona morrisiana J.M.Black
  • Swainsona murrayana subsp. eciliata A.T.Lee
  • Swainsona murrayanaWawra subsp. murrayana

Swainsona murrayana, commonly known as slender Darling-pea or slender Darling pea, [2] is a species of flowering plant in the family Fabaceae and is endemic to south-eastern mainland Australia. It is a prostrate, low-growing or erect perennial herb, with imparipinnate leaves with 3 to 11 linear to elliptic leaflets and racemes of 3 to 11 pink or purple flowers.

Contents

Description

Swainsona murrayana is a prostrate, low-growing or erect perennial herb that typically grows up to 25 cm (9.8 in) tall and is densely hairy. The leaves are imparipinnate, mostly 5–10 mm (0.20–0.39 in) long with 3 to 11 linear to elliptic leaflets, the side leaflets mostly 5–30 mm (0.20–1.18 in) long and 1–2 mm (0.039–0.079 in) wide with a stipule 1–5 mm (0.039–0.197 in) long at the base of the petiole. The flowers are pink or purple, arranged in racemes of 3 to 11, on a peduncle 0.5–2 mm (0.020–0.079 in) wide, each flower about 10 mm (0.39 in) long on a pedicel 3–5 mm (0.12–0.20 in) long. The sepals are joined at the base to form a tube about 2.5 mm (0.098 in) long, with teeth shorter than the tube. The standard petal is about 10 mm (0.39 in) long and 7–8 mm (0.28–0.31 in) wide, the wings 8–10 mm (0.31–0.39 in) long and the keel 7–9 mm (0.28–0.35 in) long and 2–3 mm (0.079–0.118 in) broad. Flowering occurs from August to November, and the fruit is a narrowly elliptic pod 20–65 mm (0.79–2.56 in) long with the remains of the style about 4 mm (0.16 in) long. [2] [3] [4] [5]

Taxonomy and naming

Swainsona murrayana was first formally described in 1881 by Heinrich Wawra von Fernsee in Österreichische botanische Zeitschrift from specimens collected near the Murray River. [6] [7]

Distribution

Slender Darling-pea is usually found in seasonally wet areas and near lakes and is found on the western slopes and plains of New South Wales, in Northern and western Victoria and southern Queensland with an outlier in South Australia. [2] [3] [5]

Conservation status

Swainsona murrayana is listed as "vulnerable" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and the New South Wales Government Biodiversity Conservation Act 2016 . [2] The main threats to the species are grazing by domestic stock and by rabbits, weed invasion, agriculture and roadside maintenance. [8]

Related Research Articles

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

Swainsona behriana, commonly known as Behr's swainsona, is a species of flowering plant in the family Fabaceae and is endemic to south-eastern continental Australia. It is a prostrate or low-growing perennial herb with imparipinnate leaves usually with 9 to 13 narrowly elliptic to egg-shaped leaflets with the narrower end towards the base, and racemes of 2 to 7 purple flowers.

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

Swainsona phacoides commonly known as dwarf Swainson-pea or lilac Darling pea, is a flowering plant in the family Fabaceae, and is native to all mainland states of Australia and the Northern Territory. It is a prostrate or ascending perennial herb with imparipinnate leaves usually with 5 to 13 elliptic leaflets tapered at both ends, and racemes of usually 7 4 usually pale to dark reddish-purple.

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

Swainsona brachycarpa, commonly known as slender swainson-pea, is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a prostrate or ascending perennial herb with imparipinnate leaves usually with 9 to 13 egg-shaped to narrowly elliptic or egg-shaped leaflets, and racemes of up to 12 white, purple or dark red flowers.

<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 dictyocarpa is a species of flowering plant in the family Fabaceae and is endemic to central areas of South Australia. It is a small erect perennial herb with imparipinnate leaves with 3 to 7 elliptic leaflets, and racemes of purple flowers in racemes of 2 to 6.

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 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 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.

<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 luteola, commonly known as dwarf Darling pea, 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.

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

Swainsona microphylla, commonly known as small-leaf swainson-pea, small-leaf swainsona, or poison swainson-pea is a species of flowering plant in the family Fabaceae and is endemic to mainland Australia. It is a prostrate or low-growing, sometimes erect perennial herb, with imparipinnate leaves with mostly 21 to 41 broadly wedge-shaped to round leaflets and racemes of 5 to 10 white, pink or purple flowers.

Swainsona oliveri is a species of flowering plant in the family Fabaceae and is endemic to south-western Australia. It is a slender, prostrate to ascending annual or perennial herb with imparipinnate leaves with 9 to 13 narrowly egg-shaped leaflets, the narrower end towards the base, and racemes of up to 4 cream-coloured to yellow flowers, sometimes with a pink tinge.

<i>Swainsona oroboides</i> Species of flowering plants

Swainsona oroboides, commonly known as variable swainsona or kneed Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to Australia. It is a prostrate or ascending perennial plant with imparipinnate leaves with 3 to 7 narrowly elliptic leaflets and racemes of 3 to about 16 purple flowers.

Swainsona parviflora is a species of flowering plant in the family Fabaceae and is endemic to the eastern Australia. It is a low-lying perennial with imparipinnate leaves with 5 to 11 narrowly elliptic to narrowly lance-shaped or oblong leaflets, and racemes of 3 to 10 purple flowers.

Swainsona pedunculata is a species of flowering plant in the family Fabaceae and is endemic to inland areas of Western Australia. It is a small, ascending annual herb with imparipinnate leaves with 3 to 7 narrowly elliptic or lance-shaped leaflets, and racemes of 2 to 3 purple flowers.

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

Swainsona pterostylis is a species of flowering plant in the family Fabaceae and is endemic to northern parts of Western Australia. It is a low-growing or prostrate perennial herb, with imparipinnate leaves with mostly 11 to 19 broadly elliptic leaflets, and racemes of 5 to more than 30 purple or violet flowers.

Swainsona pyrophila, commonly known as yellow Swainson-pea or yellow Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to southern continental Australia. It is an erect or spreading annual or short-lived perennial plant with imparipinnate leaves with 15 to 19, mostly egg-shaped leaflets with the narrower end towards the base, and racemes of 15 to about 20 yellow flowers.

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

Swainsona queenslandica, commonly known as smooth Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a perennial herb with imparipinnate leaves with 19 to 25 egg-shaped leaflets with the narrower end toward the base, and racemes of about 20 white, pinkish to orange red or dark red flowers.

References

  1. 1 2 "Swainsona murrayana". Australian Plant Census. Retrieved 13 April 2024.
  2. 1 2 3 4 Thompson, Joy; James, Teresa A. "Swainsona murrayana". Royal Botanic Garden, Sydney. Retrieved 13 April 2024.
  3. 1 2 Thonpson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 546–547. Retrieved 13 April 2024.
  4. ↑ "Swainsona murrayana". State Herbarium of South Australia. Retrieved 13 April 2024.
  5. 1 2 Jeanes, Jeff A.; Stajsic, Val. "Swainsona murrayana". Royal Botanic Gardens Victoria. Retrieved 13 April 2024.
  6. ↑ "Swainsona murrayana". Australian Plant Name Index. Retrieved 13 April 2024.
  7. ↑ von Fernsee, Heinrich Wawra (1881). "Neue Pflanzenarten". Österreichische botanische Zeitschrift. 31 (3): 69. Retrieved 13 April 2024.
  8. ↑ "Approved Conservation Advice for Swainsona murrayana (Slender Darling-pea)" (PDF). Australian Government Department of Climate Change, Energy, Water and the Environment. Retrieved 14 April 2024.
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