Swainsona tanamiensis

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Swainsona tanamiensis
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. tanamiensis
Binomial name
Swainsona tanamiensis

Swainsona tanamiensis is a species of flowering plant in the family Fabaceae and is endemic to north-western Australia. It is a prostrate or erect perennial plant with imparipinnate leaves with 5 to 13 broadly egg-shaped to elliptic, or almost round leaflets, and racemes of up to 8 purple flowers.

Contents

Description

Swainsona tanamiensis is a prostrate or erect perennial plant that typically grows to a height of up to about 25 cm (9.8 in), and has many hairy stems. Its leaves are imparipinnate, about 30–80 mm (1.2–3.1 in) long with 5 to 13 broadly egg-shaped to elliptic or almost round leaflets, the side leaflets mostly 1–15 mm (0.039–0.591 in) long and 3–8 mm (0.12–0.31 in) wide. There is a stipule mostly about 8 mm (0.31 in) long at the base of the petiole. The flowers are arranged in racemes 20–120 mm (0.79–4.72 in) long with up to 8 flowers on a peduncle 0.5–1.0 mm (0.020–0.039 in) wide, each flower about 15 mm (0.59 in) long on a pedicel about 2–3 mm (0.079–0.118 in) long. The sepals are joined at the base, forming a tube 2.0–2.5 mm (0.079–0.098 in) long, the sepal lobes about as long or somewhat shorter than the tube. The petals are purple, the standard petal 10–15 mm (0.39–0.59 in) long and 8–10 mm (0.31–0.39 in) wide, the wings 8–14 mm (0.31–0.55 in) long, and the keel about 10–15 mm (0.39–0.59 in) long and 3–6 mm (0.12–0.24 in) deep. Flowering occurs from April to July, and the fruit is mostly 15–30 mm (0.59–1.18 in) long and 3–4 mm (0.12–0.16 in) wide. [2] [3]

Taxonomy and naming

Swainsona tanamiensis was first formally described in 1993 by Joy Thompson in the journal Telopea from specimens collected by William Robert Barker near Lake Ruth in the Tanami Desert in 1975. [2] [4] The specific epithet (tanamiensis) refers the Tanami Desert. [2]

Distribution and habitat

This species of pea grows in clay or sandy soil on floodplains, and the edges of salt lakes in the Dampierland, Gascoyne, Great Sandy Desert, Pilbara and Tanami bioregions of Western Australia and the Northern Territory. [2] [3] [5]

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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.

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.

<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 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 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.

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 native to Western Australia and South 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 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.

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.

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 reticulata, commonly known as kneed Swainson-pea, is a species of flowering plant in the family Fabaceae and is endemic to south-eastern mainland Australia. It is a prostrate perennial herb, with imparipinnate leaves with 5 to 15 egg-shaped, elliptic or very narrowly linear leaflets, and racemes of 3 to 7 purple flowers.

Swainsona rostrata is a species of flowering plant in the family Fabaceae and is endemic to Central Australia. It is a prostrate or low-growing annual or perennial plant with imparipinnate leaves with 7 to 9 egg-shaped leaflets with the narrower end towards the base, and racemes of usually up to 5 purple or cream-coloured flowers.

Swainsona rotunda is a species of flowering plant in the family Fabaceae and is endemic to inland areas of northern Western Australia. It is a prostrate herb with imparipinnate leaves with about 7 narrowly lance-shaped leaflets, and racemes of up to 4 lilac-coloured flowers.

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

Swainsona similis is a species of flowering plant in the family Fabaceae and is endemic to inland eastern Australia. It is an erect or spreading perennial plant with imparipinnate leaves with 5 to 15 narrowly elliptic leaflets and racemes of 5 to 15 purple flowers.

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

Swainsona tenuis is a species of flowering plant in the family Fabaceae and is endemic to western continental Australia. It is a prostrate perennial herb with many stems, imparipinnate leaves with 5 to 9 egg-shaped leaflets with the narrower end towards the base, to linear or elliptic leaflets, and racemes of up to 7 purple flowers.

References

  1. ↑ "Swainsona tanamiensis". Australian Plant Census. Retrieved 14 June 2024.
  2. 1 2 3 4 Thompson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 4 (1): 496–497. Retrieved 14 June 2024.
  3. 1 2 "Swainsona tanamiensis". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions . Retrieved 9 September 2022.
  4. ↑ "Swainsona tanamiensis". Australian Plant Name Index. Retrieved 14 June 2024.
  5. ↑ "Swainsona tanamiensis". Northern Territory Government. Retrieved 15 June 2024.
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