Swainsona tephrotricha

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

Swainsona lessertiifolia var. tephrotricha(F.Muell.) Benth.

Contents

On Mount Bryan Swainsona tephrotricha habit.jpg
On Mount Bryan

Swainsona tephrotricha is a species of flowering plant in the family Fabaceae and is endemic to eastern South Australia. It is an erect or ascending perennial plant, with imparipinnate leaves with 7 to 19 broadly egg-shaped to narrowly elliptic leaflets, and racemes of 30 or more pink or pinkish-purple flowers.

Description

Swainsona tephrotricha is an erect or ascending subshrubby perennial, with imparipinnate leaves 50–100 mm (2.0–3.9 in) long, with 7 to 19 broadly egg-shaped to narrowly elliptic leaflets, 30–90 mm (1.2–3.5 in) long, the side leaflets 10–30 mm (0.39–1.18 in) long and 3–10 mm (0.12–0.39 in) wide. There is a stipule 5–8 mm (0.20–0.31 in) long at the base of the petiole. The flowers are arranged in racemes with up to 30 or more flowers on a peduncle 2–3 mm (0.079–0.118 in) wide, each flower 8–12 mm (0.31–0.47 in) long on a dark, hairy pedicel 1–3 mm (0.039–0.118 in) long. The sepals are joined at the base, forming a tube 2–3 mm (0.079–0.118 in) long, the sepal lobes usually much shorter than the tube. The petals are pink or pinkish-purple, rarely white, the standard petal 8–12 mm (0.31–0.47 in) long and 10–12 mm (0.39–0.47 in) wide, the wings about 8–10 mm (0.31–0.39 in) long, and the keel about 9–10 mm (0.35–0.39 in) long and 3.5–4.0 mm (0.14–0.16 in) deep. Flowering mainly occurs from July to October and the fruit is more or less spherical, 10–15 mm (0.39–0.59 in) long and 7–8 mm (0.28–0.31 in) wide, with the remains of the style about 6 mm (0.24 in) long. [2] [3]

Taxonomy

Swainsona tephrotricha was first formally described in 1853 by Ferdinand von Mueller in the journal Linnaea . [4] [5]

Distribution and habitat

This species of pea grows on arid hillsides, often on roadsides, in and around the Flinders Ranges in the east of South Australia. [2] [3]

Related Research Articles

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<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 stenodonta</i> Species of flowering plant

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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.

<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 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 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 incei is a species of flowering plant in the family Fabaceae and is endemic to inland Western Australia. It is an erect or ascending annual, sometimes perennial herb with imparipinnate leaves with 5 to 9 lance-shaped to elliptic leaflets, and racemes of 2 to 30 purple flowers.

Swainsona katjarra, commonly known as Birriliburu swainsona, is a species of flowering plant in the family Fabaceae and is endemic to inland Western Australia. It is an erect annual herb with imparipinnate leaves with 4 to 6 lance-shaped to egg-shaped to elliptical leaflets, and racemes of 15 to 25 magenta flowers.

Swainsona kingii is a species of flowering plant in the family Fabaceae and is native to Western Australia and South 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 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 oliveri is a species of flowering plant in the family Fabaceae and is endemic to south-western Australia. It is a slender, prostrate to ascending annual or perennial herb with imparipinnate leaves with 9 to 13 narrowly egg-shaped leaflets, the narrower end towards the base, and racemes of up to 4 cream-coloured to yellow flowers, sometimes with a pink tinge.

<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 parviflora is a species of flowering plant in the family Fabaceae and is endemic to the eastern Australia. It is a low-lying perennial with imparipinnate leaves with 5 to 11 narrowly elliptic to narrowly lance-shaped or oblong leaflets, and racemes of 3 to 10 purple flowers.

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

Swainsona pterostylis is a species of flowering plant in the family Fabaceae and is endemic to northern parts of Western Australia. It is a low-growing or prostrate perennial herb, with imparipinnate leaves with mostly 11 to 19 broadly elliptic leaflets, and racemes of 5 to more than 30 purple or violet 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.

<i>Swainsona stipularis</i> Species of flowering plant

Swainsona stipularis is a species of flowering plant in the family Fabaceae and is endemic to southern continental Australia. It is a spreading to ascending perennial herb, with imparipinnate leaves with 5 to 11 broadly linear to heart-shaped leaflets, and racemes of mostly 5 to 20 usually orange-red 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.

References

  1. 1 2 "Swainsona tephrotricha". Australian Plant Census. Retrieved 16 June 2024.
  2. 1 2 Thompson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 537–538. Retrieved 16 June 2024.
  3. 1 2 "Swainsona tephrotricha". State Herbarium of South Australia. Retrieved 16 June 2024.
  4. ↑ "Swainsona tephrotricha". Australian Plant Name Index. Retrieved 16 June 2024.
  5. ↑ von Mueller, Ferdinand (1853). "Diagnoses et descriptiones plantarum novarum, quas in Nova Hollandia australi praecipue in regionibus interioribus". Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde. 25: 392. Retrieved 16 June 2024.
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