Swainsona dictyocarpa

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Swainsona dictyocarpa
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. dictyocarpa
Binomial name
Swainsona dictyocarpa

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.

Contents

Description

Swainsona dictyocarpa is an erect perennial herb, that typically grows to a height of up to 6 cm (2.4 in) and has gabrous stems. The leaves are imparipinnate, mostly 8–10 mm (0.31–0.39 in) long with 3 to 7 elliptic leaflets, the leaflets 5–9 mm (0.20–0.35 in) long and 2–4 mm (0.079–0.157 in) wide on a petiole 10–15 mm (0.39–0.59 in) long. There are lance-shaped stipules 1–2 mm (0.039–0.079 in) long at the base of the petioles. The flowers are purple, arranged in racemes of 2 to 6 on a peduncle 25–100 mm (0.98–3.94 in) long with bracts 1–2 mm (0.039–0.079 in) long at the base. Each flower is 8–10 mm (0.31–0.39 in) long on a pedicel about 2 mm (0.079 in) long, the sepals 5–6 mm (0.20–0.24 in) long and joined at the base with lance-shape lobes longer than the tube. The standard petal is about 10 mm (0.39 in) long, the wings about 8 mm (0.31 in) long and the keel 8 mm (0.31 in) long. Flowering usually occurs from June to October, and the fruit is a cylindrical pod 12–14 mm (0.47–0.55 in) long and 3–5 mm (0.12–0.20 in) wide. [2] [3]

Taxonomy and naming

Swainsona dictyocarpa was first formally described in 1930 by John McConnell Black in the Transactions and Proceedings of the Royal Society of South Australia , from specimens collected by John Burton Cleland north of Lake Gairdner in 1929. [4] [5]

Distribution

This species of pea grows in central South Australia. [2] [3]

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

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

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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.

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

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.

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

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.

<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 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.

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 decurrens is a species of flowering plant in the family Fabaceae and is endemic to northern inland areas of Australia. It is an erect annual with imparipinnate leaves usually with 15 to 19 narrowly elliptical leaflets and racemes of 20 to 30 red or purple flowers.

References

  1. "Swainsona dictyocarpa". Australian Plant Census. Retrieved 2 December 2022.
  2. 1 2 Thonpson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 487–488. Retrieved 2 December 2023.
  3. 1 2 "Swainsona dictyocarpa". State Herbarium of South Australia. Retrieved 2 December 2023.
  4. "Swainsona dictyocarpa". Australian Plant Name Index. Retrieved 2 December 2023.
  5. Black, John McConnell (1930). "Additions to the Flora of South Australia. No. 28". Transactions and proceedings of the Royal Society of South Australia. 54: 60. Retrieved 2 December 2023.