Swainsona acuticarinata

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

Swainsona burkei subsp. acuticarinataA.T.Lee

Swainsona acuticarinata is a species of flowering plant in the family Fabaceae and is endemic to arid areas of central Australia. It is a prostrate perennial herb with imparipinnate leaves with 5 to 11 leaflets, and racemes of purple flowers.

Contents

Description

Swainsona acuticarinata is a prostrate perennial herb, that typically grows to a height of up to 45 cm (18 in) with several densely softly-hairy stems at the base. The leaves are imparipinnate, 10–50 mm (0.39–1.97 in) long with 5 to 11 egg-shaped leaflets, the leaflets 5–15 mm (0.20–0.59 in) long and 3–7 mm (0.12–0.28 in) wide. The flowers are purple, arranged in racemes 10–150 mm (0.39–5.91 in) long of 2 to 10, each flower 7–10 mm (0.28–0.39 in) long on a pedicel about 2 mm (0.079 in) long with lance-shaped bracts 2–3 mm (0.079–0.118 in) long at the base. The sepals are joined at the base, forming a tube about 1.5 mm (0.059 in) long, the lobes 3 or 4 times longer than the sepal tube. The standard petal is 7–11 mm (0.28–0.43 in) long, 8–10 mm (0.31–0.39 in) wide, the wings 4.5–7 mm (0.18–0.28 in) long, and the keel 6–10 mm (0.24–0.39 in) long and 3–4 mm (0.12–0.16 in) deep. Flowering occurs in most months, and the fruit is an oblong pod 10–15 mm (0.39–0.59 in) long and about 4–5 mm (0.16–0.20 in) wide. [2] [3]

Taxonomy and naming

This species was first formally described in 1948 by Alma Theodora Lee who gave it the name Swainsona burkei subsp. acuticarinata in Contributions from the New South Wales National Herbarium. [4] In 1993 Joy Thompson raised it to species status as S. acuticarinata in the journal Telopea . [5] The specific epithet (acuticarinata) means "sharp-pointed keel".

Distribution and habitat

Swainsona acuticarinata grows with Triodia species, often in scattered mallee or mulga, and occurs in the south-west of the Northern Territory, western South Australia and in scattered parts of eastern Western Australia. [2] [3] [6]

Related Research Articles

<i>Swainsona</i> Genus of legumes

Swainsona is a genus of about 85 species of flowering plants in the family Fabaceae, and is endemic to Australia. Plants in this genus are herbs or subshrubs with imparipinnate leaves and usually purple flowers similar to others in the family.

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

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<i>Kennedia coccinea</i> Species of legume

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<i>Goodenia hederacea</i> Species of flowering plant

Goodenia hederacea, commonly known as forest goodenia or ivy goodenia, is a species of flowering plant that is endemic to eastern Australia. It is a prostrate to ascending, perennial herb with linear to elliptic or round leaves, and racemes of yellow flowers.

Goodenia angustifolia is a species of flowering plant in the family Goodeniaceae and is endemic to northern Australia. It is a prostrate or ascending herb with linear, channelled, needle-shaped leaves, and racemes of bright yellow flowers with leaf-like bracteoles at the base.

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

Swainsona sejuncta is a species of flowering plant in the family Fabaceae. It has pea-shaped flowers in a variety of colours, pink, cream, orange and mauve from spring to summer and is endemic to Queensland.

Goodenia fordiana is a species of flowering plant in the family Goodeniaceae and is endemic to north-eastern New South Wales. It is a prostrate herb with a rosette of leaves and yellow flowers near the end of leafy stalks.

Goodenia glareicola is a species of flowering plant in the family Goodeniaceae and is endemic to the south-west of Western Australia. It is an erect, perennial herb with linear to lance-shaped leaves, and racemes of blue flowers with purplish spots.

Goodenia lyrata is a species of flowering plant in the family Goodeniaceae and is endemic to inland areas of Western Australia. It is a prostrate herb with densely hairy, lyrate leaves at the base of the plant, smaller leaves on the stem and racemes of yellow flowers.

Goodenia prostrata is a species of flowering plant in the family Goodeniaceae and is endemic to inland parts of Western Australia. It is a prostrate herb with toothed, lance-shaped leaves at the base of the plant and racemes of yellow flowers with a brownish centre.

<i>Goodenia watsonii</i> Species of plant

Goodenia watsonii is a species of flowering plant in the family Goodeniaceae and is endemic to the south-west of Western Australia. It is a perennial herb with egg-shaped to elliptic leaves mostly at the base of the plant, and thyrses of white, cream-coloured or bluish flowers.

Gompholobium oreophilum is a species of flowering plant in the family Fabaceae and is endemic to the north-west of Western Australia. It is an erect shrub with pinnate leaves with elliptic leaflets, and racemes of yellow to orange and creamy-yellow, pea-like flowers.

Gompholobium polyzygum is a species of flowering plant in the family Fabaceae and is endemic to north-western Australia. It is an erect or prostrate shrub with pinnate leaves each with sixteen to twenty-one pairs of leaflets, and yellow-orange and greenish, pea-like flowers.

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

Swainsona maccullochiana, commonly known as Ashburton pea, is a species of flowering plant in the family Fabaceae. It is an upright annual with purple-reddish, pink or bluish pea-like flowers from spring to summer and is endemic to Western Australia.

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

Swainsona sericea commonly known as silky Swainson-pea or silky pea, is a flowering plant in the family Fabaceae. It is a small perennial with greyish-green leaves, purple flowers and grows in New South Wales, Victoria and South Australia.

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

Swainsona phacoides commonly known as dwarf Swainson-pea or lilac Darling pea, is a flowering plant in the family Fabaceae. It is a small perennial herb, usually purple flowers and grows in all mainland states of Australia and the Northern Territory.

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


Swainsona swainsonioides commonly known as downy Swainson-pea or downy Darling pea,is a flowering plant in the family Fabaceae. It is a small perennial herb with purple flowers and grows in eastern states of Australia.

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


Swainsona canescens, commonly known as grey swainsona, is a flowering plant in the family Fabaceae. It is a small perennial herb with pink-purple or purple, yellow and green flowers and grows in Queensland, Western Australia and South Australia.

Goodia macrocarpa is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a shrub with trifoliate leaves, the leaflets narrowly elliptic to elliptic, and bright yellow and red pea-like flowers.

Goodia parviflora is a species of flowering plant in the family Fabaceae and is endemic to Queensland. It is a shrub with trifoliate leaves, the leaflets elliptic to more or less round, and yellow or orange-yellow and red and purplish, pea-like flowers.

References

  1. 1 2 "Swainsona acuticarinata". Australian Plant Census. Retrieved 11 September 2022.
  2. 1 2 Thompson, Joy (1993). "A revision of the genus Swainsona (Fabaceae). Telopea 5(3):". Telopea. 5 (3): 533–534. Retrieved 11 September 2023.
  3. 1 2 "Swainsona acuticarinata". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. "Swainsona burkei subsp. acuticarinata". Australian Plant Name Index. Retrieved 11 September 2023.
  5. "Swainsona acuticarinata". Australian Plant Name Index. Retrieved 11 September 2023.
  6. "Swainsona acuticarinata". Northern Territory Government. Retrieved 11 September 2023.