Swainsona beasleyana

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Swainsona beasleyana
Swainsona beasleyana.jpg
Near Exmouth
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. beasleyana
Binomial name
Swainsona beasleyana
Synonyms [1]

Swainsona beasleyanaF.Muell. subsp. beasleyana

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.

Contents

Description

Swainsona beasleyana is a low-lying perennial herb, that typically grows to a height of up to 20 cm (7.9 in) with many hairy stems arising from its base. Its leaves are imparipinnate, 5–10 mm (0.20–0.39 in) long usually with 15 to 19 broadly egg-shaped leaflets with the narrower end towards the base, the leaflets variable in size. The flowers are arranged in racemes 200–300 mm (7.9–11.8 in) long of 3 to 8 or more on a peduncle 2–4 mm (0.079–0.157 in) in diameter, each flower 17–22 mm (0.67–0.87 in) long. The sepals are joined at the base, forming a tube about 3 mm (0.12 in) long, the sepal lobes about the same length as the tube. The petals are pale or dark purple, the standard petal 15–25 mm (0.59–0.98 in) long and 10–20 mm (0.39–0.79 in) wide, the wings up to 15 mm (0.59 in) long, and the keel about 22 mm (0.87 in) long. Flowering occurs in August and September, and the fruit is a narrowly oblong pod 20–25 mm (0.79–0.98 in) long and 5–7 mm (0.20–0.28 in) wide with the remains of the style about 7 mm (0.28 in) long. [2] [3]

Taxonomy and naming

Swainsona beasleyana was first formally described in 1887 by Ferdinand von Mueller in The Chemist and Druggist of Australasia, from specimens collected by "Henry King and Thomas Beasley" near Lake Austin. [4] [5] The specific epithet (beasleyana) honours Thomas Beasley (1860–1902). [6]

Distribution and habitat

This species of pea grows in soakage areas in sandy or gravelly loam in scattered locations in the Avon Wheatbelt, Coolgardie, Great Victoria Desert, Murchison, Nullarbor and Yalgoo bioregions of inland Western Australia. [2] [3]

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

Swainsona galegifolia commonly known as smooth Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to Australia. It is a small shrub with greyish-green leaves and flowers in white, red, pink, purple, yellow or orange.

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

Swainsona procumbens is a plant in the pea family (Fabaceae) native to Australia and found in New South Wales, Victoria, Queensland and South Australia.

<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 cusackiana is a species of flowering plant in the family Goodeniaceae and is endemic to the north-west of Western Australia. It an erect herb, densely covered with silvery hairs and has a woody stem, narrow elliptic to lance-shaped leaves, and racemes of yellow flowers.

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

Goodenia eatoniana is a species of flowering plant in the family Goodeniaceae and is endemic to the extreme south-west of Western Australia. It is a perennial herb with lance-shaped leaves at the base of the plant, egg-shaped stem leaves, and racemes of blue flowers.

Goodenia macroplectra is a species of flowering plant in the family Goodeniaceae and is endemic to inland Western Australia. It an erect herb with toothed, lance-shaped leaves at the base of the plant, and racemes of dark yellow flowers with a long spur.

Goodenia micrantha is a species of flowering plant in the family Goodeniaceae and is endemic to south-western Australia. It is a prostrate to ascending herb with linear leaves at the base of the plant and racemes of small, yellowish flowers with a brownish centre.

Goodenia muelleriana is a species of flowering plant in the family Goodeniaceae and is endemic to the north-west of Western Australia. It is an ascending to erect herb with elliptic to lance-shaped leaves at the base of the plant, and racemes of yellow flowers.

Goodenia neogoodenia is a species of flowering plant in the family Goodeniaceae and is endemic to the western part of Western Australia. It is a prostrate, annual herb with round to heart-shaped or rhombic leaves and racemes or spikes of small, brownish flowers.

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

Goodenia purpurea is a species of flowering plant in the family Goodeniaceae and is endemic to the Northern Territory. It is an ascending herb with narrow oblong to lance-shaped leaves at the base of the plant, and racemes of purple flowers.

<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 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>Bossiaea webbii</i> Species of legume

Bossiaea webbii, commonly known as water bush, is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an erect, slender shrub with more or less round to kidney-shaped, minutely-toothed leaves and orange-yellow and red, 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 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 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.

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.

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.

<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.

References

  1. 1 2 "Swainsona beasleyana". Australian Plant Census. Retrieved 22 September 2022.
  2. 1 2 Thompson, Joy (1993). "A revision of the genus Swainsona (Fabaceae). Telopea 5(3):". Telopea. 5 (3): 470–471. Retrieved 22 September 2023.
  3. 1 2 "Swainsona beasleyana". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. "Swainsona beasleyana". Australian Plant Name Index. Retrieved 22 September 2023.
  5. von Mueller, Ferdinand (1887). "Notes on Australian plants". The Chemist and Druggist of Australasia. 2 (4): 84. Retrieved 22 September 2023.
  6. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 144. ISBN   9780958034180.