Swainsona pyrophila

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Swainsona pyrophila
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. pyrophila
Binomial name
Swainsona pyrophila

Swainsona pyrophila, commonly known as yellow Swainson-pea or yellow Darling pea, [2] is a species of flowering plant in the family Fabaceae and is endemic to southern continental Australia. It is an erect or spreading annual or short-lived perennial plant with imparipinnate leaves with 15 to 19, mostly egg-shaped leaflets with the narrower end towards the base, and racemes of 15 to about 20 yellow flowers.

Contents

Description

Swainsona pyrophila is an erect or spreading, perennial or short-lived annual plant, that typically grows to a height of up to 1 m (3 ft 3 in) and has mostly glabrous stems. The leaves are imparipinnate, mostly 50–150 mm (2.0–5.9 in) long with 15 to 19 egg-shaped leaflets with the narrower end towards the base, the leaflets mostly 10–25 mm (0.39–0.98 in) long and 4–12 mm (0.16–0.47 in) wide. There are stipules mostly 4–7 mm (0.16–0.28 in) long at the base of the petioles. The flowers are arranged in racemes 150–250 mm (5.9–9.8 in) long of 15 to about 20, on a peduncle 1–2 mm (0.039–0.079 in) wide, each flower about 10 mm (0.39 in) long. The sepals are joined at the base, forming a tube 1.5–2.0 mm (0.059–0.079 in) long with lobes shorter than the sepal tube. The petals are yellow, the standard petal about 7–10 mm (0.28–0.39 in) long and wide, the wings about 8 mm (0.31 in) long, and the keel 7–10 mm (0.28–0.39 in) long and about 5 mm (0.20 in) deep. Flowering mainly occurs from September to December and the fruit is a crescent-shaped to elliptic pod 20–30 mm (0.79–1.18 in) long with the remains of the style about 3 mm (0.12 in) long. [2] [3] [4]

Taxonomy and naming

Swainsona pyrophila was first formally described in 1991 by Joy Thompson in the journal Telopea . [5] [6] The specific epithet (pyrophila) means "fire-loving", referring to its association with recently burny areas. [6]

Distribution and habitat

Swainsona pyrophila grows in mallee scrub, usually only after fire, and occurs in the eastern half of South Australia, and in adjacent areas of the Victoria and New South Wales. [2] [3] [4]

Related Research Articles

<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 procumbens</i> Species of plant

Swainsona procumbens, commonly known as Broughton pea or swamp pea is a species of flowering plant in the pea family (Fabaceae), and is native to Australia. It is a spreading or ascending perennial shrub-like herb with imparipinnate leaves with 15 to 25 linear to narrowly lance-shaped leaflets with the narrower end towards the base, and racemes of 2 to 12 purple or mauve to pink 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 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 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.

<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.

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.

<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 elegantoides is a species of flowering plant in the family Fabaceae and is endemic to north-western Western Australia. It is an erect, probably annual plant with imparipinnate leaves, with about 11 narrowly egg-shaped leaflets, and racemes of 15 to 25 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 extrajacens is a species of flowering plant in the family Fabaceae and is endemic to central Australia. It is an erect, annual plant with imparipinnate leaves with 9 to 21 linear, egg-shaped leaflets, and racemes of purple flowers in racemes of 5 to 10.

<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 3 to 15 purple, red or pink flowers.

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.

<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.

<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 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.

Swainsona perlonga is a species of flowering plant in the family Fabaceae and is endemic to inland parts of the south-west of Western Australia. It is a scrambling perennial herb with imparipinnate leaves with 7 to 13 egg-shaped or almost round leaflets, and racemes of 7 to 10 purple to lilac-pink flowers.

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

Swainsona purpurea, commonly known as purple Swainson-pea or purple Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to arid areas of inland Australia. It is an erect or spreading annual or perennial plant with imparipinnate leaves with 3 to 11 mostly linear or elliptic leaflets, and racemes of 3 to about 20 purple flowers.

References

  1. ↑ "Swainsona pyrophila". Australian Plant Census. Retrieved 21 May 2024.
  2. 1 2 3 Thompson, Joy; James, Teresa A. "Swainsona pyrophila". Royal Botanic Garden Sydney. Retrieved 21 May 2024.
  3. 1 2 Jeanes, Jeff A.; Stajsic, Val. "Swainsona pyrophila". Royal Botanic Gardens Victoria. Retrieved 22 May 2024.
  4. 1 2 Thompson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 448–449. Retrieved 21 May 2024.
  5. ↑ "Swainsona pyrophila". Australian Plant Name Index. Retrieved 21 May 2024.
  6. 1 2 Thompson, Joy (1991). "Swainsona pyrophila (Fabaceae), a new name and synonymisation". Telopea. 4 (2): 359. Retrieved 22 May 2024.
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