Swainsona forrestii

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Swainsona forrestii
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. forrestii
Binomial name
Swainsona forrestii
Synonyms [1]

Swainsona forrestii F.Muell. nom. inval., nom. nud.

Contents

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.

Description

Swainsona forrestii is an erect or spreading, single-stemmed annual herb, that typically grows to a height of about 1 m (3 ft 3 in) and has densely hairy young growth. The leaves are imparipinnate, mostly 50–100 mm (2.0–3.9 in) long with about 13 to 17 narrowly egg-shaped or narrowly elliptic leaflets, 20–40 mm (0.79–1.57 in) long and 5–10 mm (0.20–0.39 in) wide with variably shaped stipules up to 7 mm (0.28 in) long at the base of the petioles. The flowers are dark brownish red to purple or pink, arranged in racemes of 30 or more and up to 150 mm (5.9 in) or even 300 mm (12 in) long, on a peduncle 1.0–2.5 mm (0.039–0.098 in) long. The sepals are softly-hairy, joined at the base to form a tube, with very narrow teeth up to twice as long as the tube. The standard petal is 8–10 mm (0.31–0.39 in) long and almost as wide, the wings 7–9 mm (0.28–0.35 in) long and the keel about 10 mm (0.39 in) long and 3 mm (0.12 in) deep. Flowering usually occurs from August to October, and the fruit is a broadly elliptic pod mostly 8–10 mm (0.31–0.39 in) long on a stalk 2–3 mm (0.079–0.118 in) long, with the remains of the strongly curved style 4–7 mm (0.16–0.28 in) long. [2] [3]

Taxonomy and naming

Swainsona forrestii was first formally described in 1948 by Alma Theodora Lee in Contributions from the New South Wales National Herbarium. [4] The specific epithet (forrestii) honours John Forrest. [5]

Distribution

This species of pea usually grows in often stoney soils near creek banks or on floodplains in the Carnarvon, Gascoyne and Pilbara bioregions of central northern Western Australia. [2] [3]

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

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

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.

<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.

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 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.

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.

Swainsona ecallosa is a species of flowering plant in the family Fabaceae and is endemic to central Western Australia. It is an erect, single-stemmed, annual herb with imparipinnate leaves with about 17 narrowly egg-shaped leaflets, and racemes of purple flowers in racemes of up to 20.

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.

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

Swainsona flavicarinata is a species of flowering plant in the family Fabaceae and is endemic to inland areas of continental Australia. It is a prostrate to more or less erect perennial herb, with imparipinnate leaves with 5 to 9 egg-shaped leaflets with the narrower end towards the base, and racemes of purple, red or pink flowers in racemes of 3 to 15.

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.

References

  1. 1 2 "Swainsona forrestii". Australian Plant Census. Retrieved 14 January 2024.
  2. 1 2 Thonpson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 464–465. Retrieved 14 January 2024.
  3. 1 2 "Swainsona forrestii". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. ↑ "Swainsona forrestii". Australian Plant Name Index. Retrieved 6 January 2024.
  5. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 201. ISBN   9780958034180.
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