Swainsona lessertiifolia

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Swainsona lessertiifolia
Swainsona lessertiifolia.jpg
At Cape Schanck
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. lessertiifolia
Binomial name
Swainsona lessertiifolia
Synonyms [1]
  • Swainsona astragalifolia Sweet nom. inval., nom. nud.
  • Swainsona froebeliiRegel
  • Swainsona lessertiaefoliaDC. orth. var.
  • Swainsona lessertiifoliaDC. var. lessertiifolia
  • Swainsonia lessertiifolia F.Muell. orth. var.

Swainsona lessertiifolia, commonly known as coast swainson-pea, bog pea, Darling peapoison pea or poison vetch [2] is an erect or ascending perennial herb in the pea family and is endemic to south-eastern Australia. It has 13 to 21 narrowly elliptic to elliptic leaflets, and racemes of mostly 12 to 25 usually purplish, rarely white flowers.

Contents

Description

Swainsona lessertiifolia is an erect or ascending perennial herb that typically grows up to 50 cm (20 in) tall. Its leaves are mostly 60–90 mm (2.4–3.5 in) long with 13 to 21 narrowly elliptic to elliptic leaflets 4–25 mm (0.16–0.98 in) long and 2–10 mm (0.079–0.394 in) wide with hairy stipules 2–7 mm (0.079–0.276 in) long at the base of the petioles. The flowers are arranged in racemes mostly 100–300 mm (3.9–11.8 in) long with 12 to 25 flowers on a peduncle 1–2 mm (0.039–0.079 in) wide, each flower 8–10 mm (0.31–0.39 in) long on a hairy pedicel about 2–4 mm (0.079–0.157 in) long. The sepals are joined at the base, forming a hairy black, bell-shaped tube 2.0–2.5 mm (0.079–0.098 in) long, the sepal lobes usually shorter than the tube. The petals are dark to pale purple, rarely white, the standard petal 10–11 mm (0.39–0.43 in) long and 8–16 mm (0.31–0.63 in) wide, the wings 7–8 mm (0.28–0.31 in) long, and the keel 8–10 mm (0.31–0.39 in) long and 4 mm (0.16 in) deep. Flowering mostly occurs from August to January and the fruit is elliptic, 10–30 mm (0.39–1.18 in) and 5–8 mm (0.20–0.31 in) wide. [2] [3] [4]

Taxonomy

Swainsona lessertiifolia was first formally described in 1825 by Augustin Pyramus de Candolle in Annales des Sciences Naturelles . [5] [6]

Distribution and habitat

This species of swainsona occurs in South Australia, Victoria and Tasmania, often on sand hummocks in near-coastal areas. In South Australia it is found in the south-east of the state, [2] in Victoria it is abundant, mostly west of Wilsons Promontory [3] [7] and in Tasmania grows at Woolnorth, St Marys and on Bass Strait Islands. [8]

Related Research Articles

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

Swainsona greyana, commonly known as the Darling pea or hairy-Darling pea, is a species of flowering plant in the family Fabaceae and is endemic to south-eastern continental Australia. It is an erect perennial subshrub with imparipinnate leaves with 17 to 21 egg-shaped leaflets, and racemes of 12 to 20 or more white, pink or purple flowers.

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

Swainsona behriana, commonly known as Behr's swainsona, is a species of flowering plant in the family Fabaceae and is endemic to south-eastern continental Australia. It is a prostrate or low-growing perennial herb with imparipinnate leaves usually with 9 to 13 narrowly elliptic to egg-shaped leaflets with the narrower end towards the base, and racemes of 2 to 7 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.

<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.

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 decurrens is a species of flowering plant in the family Fabaceae and is endemic to northern inland areas of Australia. It is an erect annual with imparipinnate leaves usually with 15 to 19 narrowly elliptical leaflets and racemes of 20 to 30 red or 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 fissimontana is a species of flowering plant in the family Fabaceae and is endemic to inland areas of southern continental Australia. It is a compact, erect or upright perennial herb with imparipinnate leaves with 7 to 13 narrowly elliptic to elliptic leaflets, and racemes of pink to dark purplish flowers in racemes of 3 to 11.

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 fraseri is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a perennial plant with imparipinnate leaves with mostly 21 to 24 ellipitic leaflets, and racemes of 20 or more pink to 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 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.

<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 longicarinata is a prostrate or ascending perennial herb in the pea family and is endemic to the far west of Western Australia. It has 5 to 11 variably-shaped leaflets, and racemes of about 7, usually purple flowers.

References

  1. 1 2 "Swainsona lessertiifolia". Australian Plant Census. Retrieved 18 March 2024.
  2. 1 2 3 "Swainsona lessertiifolia". State Herbarium of South Australia. Retrieved 18 March 2024.
  3. 1 2 Jeanes, Jeff A.; Stajsic, Val. "Swainsona lessertiifolia". Royal Botanic Gardens Victoria. Retrieved 18 March 2024.
  4. ↑ Thompson, Joy (1993). "A revision of the genus Swainsona (Fabaceae)". Telopea. 5 (3): 511–513. Retrieved 18 March 2024.
  5. ↑ "Swainsona lessertiifolia". APNI. Retrieved 18 March 2024.
  6. ↑ de Candolle, Augustin P. (1825). "Notice sur quelques genres et speces nouvelles de legumineuses, extraite de divers Memoires presentes a la Societe d'Histoire naturelle de Geneve, pendant le cours des annees 1823 et 1824". Annales des Sciences Naturelles Series 1. 4: 99–100. Retrieved 18 March 2024.
  7. ↑ Longmore, Sue; Smithyman, Steve & Crawley, Matt (2010). Coastal Plants of the Bellarine Peninsula. Bellarine Catchment Network.
  8. ↑ Rodway, Leonard (1903). The Tasmanian Flora. Hobart: Tasmanian Government Printer. p. 38. Retrieved 18 March 2024.
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