Bossiaea arcuata

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Bossiaea arcuata
Status DECF P1.svg
Priority One — Poorly Known Taxa (DEC)
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Genus: Bossiaea
Species:
B. arcuata
Binomial name
Bossiaea arcuata

Bossiaea arcuata is a species of flowering plant in the family Fabaceae and is endemic to a small area in Western Australia. It is an erect, openly-branched, more or less leafless shrub with often arched cladodes, and yellow and red pea-like flowers.

Contents

Description

Bossiaea arcuata is an erect, openly-branched shrub that typically grows to 1.5 m (4 ft 11 in) high and 2 m (6 ft 7 in) wide. The leaves are oblong to lance-shaped, 3.6–10.5 mm (0.14–0.41 in) long and 1.3–3.0 mm (0.051–0.118 in) wide on a petiole 0.5–1.5 mm (0.020–0.059 in) long but are only present on the youngest growth and soon fall from the plant. The ends of the branches function as cladodes 0.7–1.0 mm (0.028–0.039 in) wide, are pinkish when young, and have a weak point on the tip. The flowers are arranged singly on a pedicel 5.5–13 mm (0.22–0.51 in) long with a single bract that falls from the flower bud. The sepals are joined at the base forming a tube 3.5–4.6 mm (0.14–0.18 in) long, the two upper lobes 1.3–2.1 mm (0.051–0.083 in) long and the lower three lobes 1.4–1.9 mm (0.055–0.075 in) long. The standard petal is bright yellow with red markings and 10.5–13.0 mm (0.41–0.51 in) long, the wings yellow with a red base and the keel pale greenish yellow. Flowering occurs from March to April or from September to October and the fruit is an oblong pod 14–21 mm (0.55–0.83 in) long. [2] [3]

This bossiaea is superficially similar to B. halophila but differs in having a more open habit, a few inconspicuous leaves, and cladodes that are round or oval in cross-section, rather than winged. It also resembles B. peduncularis but differs from it in having a different habit, different branching pattern, glabrous branches, leaves and sepals, and larger flowers. [3]

Taxonomy and naming

Bossiaea arcuata was first formally described in 2006 by James Henderson Ross in the journal Muelleria from specimens collected south of Norseman in 2000. [3] [4] The specific epithet (arcuata) means "curved like a bow" referring to the shape of the cladodes. [3]

Distribution and habitat

This bossiaea is only known from the Picnic Lake area south of Norseman in Western Australia, where it grows in deep sand on the edge of the salt lake. [3]

Conservation status

Bossiaea arcuata is classified as "Priority One" by the Government of Western Australia Department of Parks and Wildlife, [2] meaning that it is known from only one or a few locations which are potentially at risk. [5]

Related Research Articles

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<i>Bossiaea halophila</i> Species of legume

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<i>Bossiaea calcicola</i> Species of flowering plant

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<i>Bossiaea grayi</i> Species of flowering plant

Pultenaea grayi, commonly known as Murrumbidgee bossiaea, is a species of flowering plant in the family Fabaceae and is endemic to the Australian Capital Territory. It is an erect shrub with flattened, winged, glabrous cladodes, leaves reduced to small scales, and pea-like, yellow and red flowers.

Bossiaea inundata is a species of flowering plant in the family Fabaceae and is endemic to the Murchison River Gorge in Western Australia. It is a spreading, openly-branched shrub with oblong, elliptic or egg-shaped leaves with the narrower end towards the base, and deep yellow and red flowers.

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<i>Bossiaea leptacantha</i> Species of legume

Bossiaea leptacantha is a species of flowering plant in the family Fabaceae and is endemic to southern Western Australia. It is a low, compact, spreading, many-branched shrub, the branches ending in cladodes, the leaves reduced to small scales, and with deep yellow, red and greenish yellow flowers.

<i>Bossiaea oxyclada</i> Species of legume

Bossiaea oxyclada is a species of flowering plant in the family Fabaceae and is endemic to the south of Western Australia. It is an erect, rigid shrub with flattened branches, cladodes ending with a sharp point, leaves mostly reduced to small scales, and golden yellow and deep red flowers.

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Bossiaea praetermissa is a species of flowering plant in the family Fabaceae and is endemic to near-coastal areas in the far south-west of Western Australia. It is a shrub with many flattened, winged cladodes and deep yellow and reddish or maroon flowers.

<i>Bossiaea riparia</i> Species of legume

Bossiaea riparia, commonly known as river leafless bossiaea, is a species of flowering plant in the family Fabaceae and is endemic to south-eastern Australia. It is an erect or low-lying shrub with flattened branches, linear young cladodes, leaves mostly reduced to small scales, and yellow and red flowers.

Bossiaea saxosa is a species of flowering plant in the family Fabaceae and is endemic to a restricted area near Norseman, Western Australia. It is an erect, intricately branched shrub with many slightly flattened, sharply-pointed cladodes and deep yellow, red and lemon-yellow, pea-like flowers.

Bossiaea simulata is a species of flowering plant in the family Fabaceae and is endemic to inland areas of Western Australia. It is a compact shrub with sharply-pointed cladodes and yellow, pea-like flowers sometimes with red markings.

References

  1. "Bossiaea arcuata". Australian Plant Census. Retrieved 6 July 2021.
  2. 1 2 "Bossiaea arcuata". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. 1 2 3 4 5 Ross, James H. (2006). "A conspectus of the Western Australian Bossiaea species (Bossiaeeae: Fabaceae)". Muelleria. 23: 75–77. Retrieved 6 July 2021.
  4. "Bossiaea arcuata". APNI. Retrieved 6 July 2021.
  5. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 6 July 2021.