Swainsona campylantha

Swainsona campylantha
	West of Blackall
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Subfamily:	Faboideae
Genus:	Swainsona
Species:	S. campylantha
Binomial name
	Swainsona campylantha; F.Muell.
Synonyms
	Swainsona fragilis F.M.Bailey ; Swainsonia campylanthaF.Muell. orth. var. ;

Last updated November 25, 2023

Swainsona campylantha, commonly known as Gilgai Darling pea,^[2] 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.

Description

Swainsona campylantha is a low-growing perennial herb, that typically grows to a height of up to 25 cm (9.8 in) with more or less glabrous, strongly ribbed stems. Its leaves are imparipinnate, mostly 30–60 mm (1.2–2.4 in) long on short petiole with up to 7 narrowly lance-shaped to narrowly elliptic leaflets 5–60 mm (0.20–2.36 in) long and 1–5 mm (0.039–0.197 in) wide. There are stipules 1–15 mm (0.039–0.591 in) long at the base of the petiole. The flowers are arranged in racemes 50–100 mm (2.0–3.9 in) long of 2 to 10 on a peduncle 1.5–3 mm (0.059–0.118 in) long, each flower 7–10 mm (0.28–0.39 in) long. The sepals are joined at the base, forming a tube about 2 mm (0.079 in) long, the sepal lobes about the same length as the tube. The petals are pink to purple, the standard petal 15–25 mm (0.59–0.98 in) long and 10–15 mm (0.39–0.59 in) wide, the wings crescent-shaped and 7–11 mm (0.28–0.43 in) long, and the keel 7–10 mm (0.28–0.39 in) long with a broad, erect, beak-like tip. Flowering depends on the environment, and the fruit is an elliptic or oblong pod mostly 10–30 mm (0.39–1.18 in) long and 6–7 mm (0.24–0.28 in) wide with the remains of the strongly curved style about 6 mm (0.24 in) long.^[2]^[3]^[4]^[5]^[6]

Taxonomy and naming

Swainsona campylantha was first formally described in 1859 by Ferdinand von Mueller in New South Wales - Parliamentary Papers- Votes and Proceedings of the Legislative Assembly, from specimens collected by Augustus Charles Gregory "on the plains along Cooper's River.^[7] The specific epithet (campylantha) means "bent or curved flowers".^[8]

Distribution and habitat

This species of pea grows in heavy red or black soils in depressions and along creek lines and is widespread in Queensland, the southern parts of the Northern Territory, northern South Australia, north-western New South Wales and northern Western Australia.^[2]^[3]^[4]^[5]^[6]

Related Research Articles

Swainsona is a genus of about 85 species of flowering plants in the family Fabaceae, and is endemic to Australia. Plants in this genus are herbs or subshrubs with imparipinnate leaves and usually purple flowers similar to others in the family.

Swainsona galegifolia commonly known as smooth Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to Australia. It is a small shrub with greyish-green leaves and flowers in white, red, pink, purple, yellow or orange.

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.

Swainsona sejuncta is a species of flowering plant in the family Fabaceae. It has pea-shaped flowers in a variety of colours, pink, cream, orange and mauve from spring to summer and is endemic to Queensland.

Swainsona colutoides, commonly known as bladder senna or bladder vetch, is a species of flowering plant in the family Fabaceae and is endemic to arid areas of Australia. It is an erect annual, shrub-like herb, with imparipinnate leaves usually with up to 13 to 17 egg-shaped leaflets with the narrower end towards the base, and racemes of 10 to 20 purple flowers.

Swainsona phacoides commonly known as dwarf Swainson-pea or lilac Darling pea, is a flowering plant in the family Fabaceae. It is a small perennial herb, usually purple flowers and grows in all mainland states of Australia and the Northern Territory.

Goodia macrocarpa is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a shrub with trifoliate leaves, the leaflets narrowly elliptic to elliptic, and bright yellow and red pea-like flowers.

Swainsona acuticarinata is a species of flowering plant in the family Fabaceae and is endemic to arid areas of central Australia. It is a prostrate perennial herb with imparipinnate leaves with 5 to 11 leaflets, and racemes of purple flowers.

Swainsona adenophylla, commonly known as violet swainson-pea or violet Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to arid areas of central Australia. It is a slender, erect or spreading perennial herb with imparipinnate leaves with three to nine linear to narrowly egg-shaped leaflets, and racemes of pink or purplish flowers in racemes of ten to twenty.

Swainsona affinis, commonly known as common poison pea, is a species of flowering plant in the family Fabaceae and is endemic to arid areas of inland Australia. It is a prostrate perennial herb with imparipinnate leaves with 7 to 25 broadly elliptic leaflets, and racemes of purple, pink, yellow or white flowers.

Swainsona beasleyana is a species of flowering plant in the family Fabaceae and is endemic to inland areas of Western Australia. It is a low-lying perennial herb with imparipinnate leaves usually with 15 to 19 egg-shaped leaflets with the narrower end towards the base, and racemes of 3 to 8 pale or dark purple flowers.

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.

Swainsona bracteata is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a perennial herb with imparipinnate leaves usually with 19 to 25 narrowly egg-shaped leaflets, and racemes of about 20 white, pale pink or pale purple flowers.

Swainsona burkei is a species of flowering plant in the family Fabaceae and is endemic to northern Australia. It is a prostrate or perennial subshrub with imparipinnate leaves usually with 5 to 11 oblong to narrowly egg-shaped leaflets, and racemes of 5 to 10 purple flowers.

Swainsona burkittii, commonly known as woolly Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to inland Australia. It is an erect or low-lying perennial with imparipinnate leaves usually with 15 to 30 egg-shaped to more or less circular leaflets, and racemes of up to fifty dark reddish-purple flowers.

Swainsona cadellii is a species of flowering plant in the family Fabaceae and is endemic to inland New South Wales. It is a shrubby perennial with imparipinnate leaves usually with 5 to 15 mostly narrowly egg-shaped leaflets, and racemes of 15 to 20 white, pink or purple flowers.

Swainsona calcicola is a species of flowering plant in the family Fabaceae and is endemic to north-western Western Australia. It is a prostrate or ascending, low-growing perennial with many stems, imparipinnate leaves usually with 7 to 11 broadly egg-shaped leaflets with the narrower end towards the base, and racemes of usually 4 or 5 pink, purple or red flowers.

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.

Swainsona complanata is a species of flowering plant in the family Fabaceae and is endemic to northern Western Australia. It is an erect, annual herb with imparipinnate leaves usually with up to 13 narrowly egg-shaped leaflets with the narrower end towards the base, and racemes of up to 20 mauve to maroon flowers.

Swainsona cornuta is a species of flowering plant in the family Fabaceae and is endemic to the west of Western Australia. It is a low-lying, annual or perennial herb with imparipinnate leaves usually with about 7 elliptic leaflets and racemes of 3 to 7 purple flowers.

References

1 2 "Swainsona campylantha". Australian Plant Census. Retrieved 17 November 2023.
1 2 3 "Swainsona campylantha". Northern Territory Government. Retrieved 17 November 2023.
1 2 Thompson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 488–489. Retrieved 17 November 2023.
1 2 "Swainsona campylantha". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
1 2 "Swainsona campylantha". State Herbarium of South Australia. Retrieved 17 November 2023.
1 2 Thompson, Joy; James, Teresa A. "Swainsona campylantha". Royal Botanic Gardens Sydney. Retrieved 17 November 2023.
↑ "Swainsona campylantha". Australian Plant Name Index. Retrieved 17 November 2023.
↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 156. ISBN 9780958034180.

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[APC-1] 1 2 "Swainsona campylantha". Australian Plant Census. Retrieved 17 November 2023.

[NT-2] 1 2 3 "Swainsona campylantha". Northern Territory Government. Retrieved 17 November 2023.

[Telopea-3] 1 2 Thompson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 488–489. Retrieved 17 November 2023.

[FB-4] 1 2 "Swainsona campylantha". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.

[SA-5] 1 2 "Swainsona campylantha". State Herbarium of South Australia. Retrieved 17 November 2023.

[RBGS-6] 1 2 Thompson, Joy; James, Teresa A. "Swainsona campylantha". Royal Botanic Gardens Sydney. Retrieved 17 November 2023.

[APNI-7] "Swainsona campylantha". Australian Plant Name Index. Retrieved 17 November 2023.

[Sharr-8] Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 156. ISBN 9780958034180.

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