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 Oesterreichische 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 greyana</i> Species of plant

Swainsona greyana, commonly known as the Darling pea or hairy-Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to south-eastern continental Australia. It is an erect perennial subshrub with imparipinnate leaves with 17 to 21 egg-shaped leaflets, and racemes of 12 to 20 or more white, pink or purple flowers.

<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 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 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 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 forrestii is a species of flowering plant in the family Fabaceae and is endemic to the central northern Western Australia. It is an erect or spreading, single-stemmed annual herb, with imparipinnate leaves with about 13 to 17 narrowly egg-shaped or narrowly ellipitic leaflets, and racemes of dark brownish red to purple or pink flowers in racemes of 30 or more.

Swainsona fraseri is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a perennial plant with imparipinnate leaves with mostly 21 to 24 ellipitic leaflets, and racemes of 20 or more pink to purple flowers.

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 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 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 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.

<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 minutiflora is a species of flowering plant in the family Fabaceae and is endemic to South Australia. It is a prostrate, herbaceous plant with imparipinnate leaves with 5 to 9 oblong or narrowly oblong leaflets with the narrower end towards the base, and racemes of 3 to 7 yellow or pinkish 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". Oesterreichische 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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