Swainsona microphylla

Last updated

Small-leaf swainson-pea
Swainsona microphylla.jpg
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. microphylla
Binomial name
Swainsona microphylla
Synonyms
List
    • Swainsona microphyllaA.Gray subsp. microphylla
    • Swainsona microphylla subsp. minima A.T.Lee
    • Swainsona microphylla subsp. tomentosaA.T.Lee
    • Swainsona microphylla var. minimaJ.M.Black nom. inval.
    • Swainsona microphylla var. tomentosaJ.M.Black nom. inval.
Habit in the Gluepot Reserve Swainsona microphylla habit.jpg
Habit in the Gluepot Reserve

Swainsona microphylla, commonly known as small-leaf swainson-pea, [2] small-leaf swainsona, [3] or poison swainson-pea [4] 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.

Contents

Description

Swainsona microphylla is a prostrate or low-growing, sometimes erect perennial herb that typically grows to a height of up to 60 cm (24 in) long and sometimes has softly-hairy branches. The leaves are imparipinnate, mostly 50–150 mm (2.0–5.9 in) long with mostly broadly wedge-shaped to round leaflets, the leaflets 1–5 mm (0.039–0.197 in) long and wide with stipules 1–4 mm (0.039–0.157 in) long at the base of the petioles. The flowers are white, pink or purple, arranged in racemes of 10 to 25, on a peduncle 10–30 mm (0.39–1.18 in) wide, each flower 6–10 mm (0.24–0.39 in) long on a pedicel 1–2 mm (0.039–0.079 in) long. The sepals are joined at the base to form a tube about 1 mm (0.039 in) long, with teeth much shorter than the tube. The standard petal is 6–8 mm (0.24–0.31 in) long and 6–9 mm (0.24–0.35 in) wide, the wings 6–7 mm (0.24–0.28 in) long and the keel 4.5–7 mm (0.18–0.28 in) long and 2–3 mm (0.079–0.118 in) broad. The fruit is an almost spherical pod 5–10 mm (0.20–0.39 in) long and 3–9 mm (0.12–0.35 in) wide with the remains of the style 2–4 mm (0.079–0.157 in) long. [2] [3] [4] [5] [6]

Taxonomy and naming

Swainsona microphylla was first formally described in 1854 by Asa Gray in the United States Exploring Expedition Phanerogamia . [7] The specific epithet (microphylla) means "small-leaved". [8]

Distribution

This species of pea grows in sandy soils on sandplains and sand hills, and is found in all mainland Australian states and the Northern Territory. In Victoria, it is mainly restricted to the far north-west of that state. [2] In New South Wales, it is found on the western slopes and plains. [4] In Western Australia it is widespread in inland areas. [3] In South Australia, the species is widespread in scattered areas [6] and in the Northern Territory it occurs in the south. [9]

Related Research Articles

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

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.

<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.

<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 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 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.

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.

<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 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.

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.

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 gracilis is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a prostrate or ascending perennial herb with imparipinnate leaves with up to 15 wedge-shaped or narrowly oblong leaflets, and racemes of up to 4 purple or blue 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 kingii is a species of flowering plant in the family Fabaceae and is endemic to the Western 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 luteola is a species of flowering plant in the family Fabaceae and is endemic to the eastern Australia. It is a prostrate or low-lying to semi-erect perennial with imparipinnate leaves with usually 3 to 17 narrowly elliptic leaflets, and racemes of 5 to 15 purple, sometimes 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.

References

  1. ↑ "Swainsona microphylla". Australian Plant Census. Retrieved 9 April 2024.
  2. 1 2 3 Jeanes, Jeff A.; Stajsic, Val. "Swainsona microphylla". Royal Botanic Gardens Victoria. Retrieved 9 April 2024.
  3. 1 2 3 "Swainsona microphylla". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. 1 2 3 Thompson, Joy; James, Teresa A. "Swainsona microphylla". Royal Botanic Garden, Sydney. Retrieved 9 April 2024.
  5. ↑ Thonpson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 510–511. Retrieved 9 April 2024.
  6. 1 2 "Swainsona microphylla". State Herbarium of South Australia. Retrieved 9 April 2024.
  7. ↑ "Swainsona microphylla". Australian Plant Name Index. Retrieved 9 April 2024.
  8. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 252. ISBN   9780958034180.
  9. ↑ "Swainsona microphylla". Northern Territory Government. Retrieved 9 April 2024.
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