Swainsona viridis

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Swainsona viridis
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. viridis
Binomial name
Swainsona viridis

Swainsona viridis, commonly known as creeping Darling pea, [2] is a species of flowering plant in the family Fabaceae and is endemic to an area near the border between New South Wales and South Australia. It is a prostrate perennial plant with imparipinnate leaves with 5 to 13 narrowly egg-shaped leaflets with the narrower end towards the base, and racemes of 5 to 10 purple flowers.

Contents

Description

Swainsona viridis is a prostrate perennial plant that typically grows to a height of up to 10 cm (3.9 in) with ridged stems. The leaves are imparipinnate, mostly 10–60 mm (0.39–2.36 in) long with 5 to 13, (usually 7 to 9) egg-shaped leaflets with the narrower end towards the base, the side leaflets 5–15 mm (0.20–0.59 in) long and 4–8 mm (0.16–0.31 in) wide with green, leaf-like stipules mostly 5–10 mm (0.20–0.39 in) long at the base of the petiole. The flowers are purple, arranged in racemes of 5 to 10 on a peduncle 1–2 mm (0.039–0.079 in) wide, each flower 7–12 mm (0.28–0.47 in) long on a sparsely hairy pedicel about 2 mm (0.079 in) long. The sepals are joined at the base to form a tube about 2 mm (0.079 in) long, with teeth about the same length, or longer or shorter than the tube. The standard petal is 7–12 mm (0.28–0.47 in) long and wide, the wings 5–8 mm (0.20–0.31 in) long and the keel 7–10 mm (0.28–0.39 in) long and 5–6 mm (0.20–0.24 in) deep. Flowering occurs from August to November, and the fruit is a narrowly cylindrical pod 25–35 mm (0.98–1.38 in) long and about 3 mm (0.12 in) wide with the twisted remains of the style about 5 mm (0.20 in) long. [2] [3] [4]

Taxonomy and naming

Swainsona viridis was first formally described in 1924 by John McConnell Black in the Flora of South Australia from specimens collected near Yunta. [5] The specific epithet (viridis) means "green". [6]

Distribution

Creeping Darling pea grows in sandy or stony areas on the banks or in the beds of creeks from near the Flinders Ranges of South Australia to near Broken Hill in New South Wales. [2] [3] [4]

Conservation status

Swainsona reticulata is listed as "endangered" in New South Wales, under the Biodiversity Conservation Act 2016. [4]

Related Research Articles

<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.

Swainsona adenophylla, commonly known as violet swainson-pea or violet Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to arid areas of central Australia. It is a slender, erect or spreading perennial herb with imparipinnate leaves with three to nine linear to narrowly egg-shaped leaflets, and racemes of pink or purplish flowers in racemes of ten to twenty.

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.

<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 luteola, commonly known as dwarf Darling pea, 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.

<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 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.

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

Swainsona murrayana, commonly known as slender Darling-pea or slender Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to south-eastern mainland Australia. It is a prostrate, low-growing or erect perennial herb, with imparipinnate leaves with 3 to 11 linear to elliptic leaflets and racemes of 3 to 11 pink or purple flowers.

<i>Swainsona oroboides</i> Species of flowering plants

Swainsona oroboides, commonly known as variable swainsona or kneed Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to Australia. It is a prostrate or ascending perennial plant with imparipinnate leaves with 3 to 7 narrowly elliptic leaflets and racemes of 3 to about 16 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.

Swainsona pyrophila, commonly known as yellow Swainson-pea or yellow Darling pea, 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.

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

Swainsona queenslandica, commonly known as smooth Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a perennial herb with imparipinnate leaves with 19 to 25 egg-shaped leaflets with the narrower end toward the base, and racemes of about 20 white, pinkish to orange red or dark red 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 rostellata is a species of flowering plant in the family Fabaceae and is endemic to inland areas of Western Australia. It is a prostrate perennial herb with imparipinnate leaves with 7 to 13 wedge-shaped leaflets, and racemes of usually up to 3 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.

<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.

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.

<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 viridis". Australian Plant Census. Retrieved 22 June 2024.
  2. 1 2 3 "Swainsona viridis". State Herbarium of South Australia. Retrieved 22 April 2024.
  3. 1 2 Thonpson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 491–492. Retrieved 22 June 2024.
  4. 1 2 3 Thompson, Joy; James, Teresa A. "Swainsona viridis". Royal Botanic Garden, Sydney. Retrieved 22 June 2024.
  5. ↑ "Swainsona viridis". Australian Plant Name Index. Retrieved 22 June 2024.
  6. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 336. ISBN   9780958034180.
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