Daviesia debilior

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Daviesia debilior
Daviesia debilior subsp. debilior.jpg
Subspecies debilior near Eneabba
Status DECF P4.svg
Priority Four — Rare Taxa (DEC)
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Genus: Daviesia
Species:
D. debilior
Binomial name
Daviesia debilior
Subspecies sinuans near Wongan Hills Daviesia debilior subsp. sinuans.jpg
Subspecies sinuans near Wongan Hills

Daviesia debilior is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a shrub with low-lying stems and many erect branchlets, scattered linear to scale-like phyllodes, and yellow, purplish, orange-pink and dark purplish flowers.

Contents

Description

Daviesia debilior is a shrub with low-lying stems and many erect branchlets, and that typically grows up to 0.6 m (2 ft 0 in) high and 1.5 m (4 ft 11 in) wide. Its leaves are reduced to scattered, linear to scale-like phyllodes similar to the branchlets, up to 120 mm (4.7 in) long and 0.4–2 mm (0.016–0.079 in) wide. Juvenile phyllodes are narrowly spatula-shaped, 20–50 mm (0.79–1.97 in) long and 4–8 mm (0.16–0.31 in) wide. The flowers are arranged in groups of two to eight in leaf axils on a peduncle 1.0–2.5 mm (0.039–0.098 in) long, each flower on a thread-like pedicel 1–5 mm (0.039–0.197 in) long with egg-shaped bracts about 3 mm (0.12 in) long at the base. The sepals are 1.5–3 mm (0.059–0.118 in) long and joined at the base, forming a bell-shaped base, the two upper lobes joined for most of their length and the lower three triangular. The standard is broadly elliptic, 5.0–6.5 mm (0.20–0.26 in) long, 6–7 mm (0.24–0.28 in) wide and yellow with a purplish or red centre, the wings 5–6 mm (0.20–0.24 in) long and pinkish-orange, and the keel 4.0–5.5 mm (0.16–0.22 in) long and dark purplish-red. Flowering occurs from May to July and the fruit is a flattened, triangular pod 14–17 mm (0.55–0.67 in) long. [2] [3] [4] [5]

Taxonomy and naming

Daviesia debilior was first formally described in 1982 by Michael Crisp in the journal Nuytsia from specimens collected by Charles Chapman near Eneabba in 1977. [5] [6] The specific epithet (debilior) means "weaker" or "more feeble", in comparison to the closely related Daviesia hakeoides . [5]

In the same journal, Crisp described two subspecies and the names are accepted by the Australian Plant Census:

Distribution and habitat

This species of pea grows in heath between Eneabba, Darlington and Wongan Hills in the Avon Wheatbelt, Geraldton Sandplains and Jarrah Forest biogeographic regions of south-western Western Australia. [4] [9] Subspecies sinuans has a more restricted distribution further inland than the autonym. [2] [3] [4]

Conservation status

Subspecies debilior is classified as "Priority Two" by the Western Australian Government Department of Biodiversity, Conservation and Attractions, [2] meaning that it is poorly known and from only one or a few locations, and subspecies sinuans "Priority Three" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions, [3] meaning that it is poorly known and known from only a few locations but is not under imminent threat. [10]

Related Research Articles

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<i>Daviesia anceps</i> Species of flowering plant

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<i>Daviesia angulata</i> Species of flowering plant

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<i>Daviesia articulata</i> Species of flowering plant

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<i>Daviesia asperula</i> Species of flowering plant

Daviesia asperula is a species of flowering plant in the family Fabaceae and is endemic to South Australia. It is a compact or spreading shrub with often crowded, flattened, tapering or curved, sharply pointed phyllodes, and orange-yellow and red flowers.

Daviesia audax is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an erect shrub with scattered, erect, thick, rigid, sharply pointed phyllodes, and orange flowers with reddish-brown markings.

<i>Daviesia brachyphylla</i> Species of flowering plant

Daviesia brachyphylla is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a spreading to bushy shrub with cylindrical phyllodes with a slightly downcurved point and orange, maroon and red flowers.

<i>Daviesia bursarioides</i> Species of flowering plant

Daviesia bursarioides, commonly known as Three Springs Daviesia, is a species of flowering plant in the family Fabaceae and is endemic to a restricted part of the south-west of Western Australia. It is a straggling shrub with widely-spreading, spiny branches, scattered, flattened phyllodes, and yellow, deep pink and maroon flowers.

<i>Daviesia campephylla</i> Species of flowering plant

Daviesia campephylla is a species of flowering plant in the family Fabaceae and is endemic to a restricted part of Western Australia. It is a low, spreading shrub with ascending branches, phyllodes shaped like looping caterpillars, and yellow flowers with faint red markings.

<i>Daviesia cardiophylla</i> Species of flowering plant

Daviesia cardiophylla is a species of flowering plant in the family Fabaceae and is endemic to the southwest of Western Australia. It is an erect, spreading shrub with heart-shaped, sharply pointed phyllodes and yellow and red flowers.

<i>Daviesia chapmanii</i> Species of flowering plant

Daviesia chapmanii is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a dense, compact, rounded shrub with sharply-ridged branches, densely crowded, sharply-pointed phyllodes, and pale yellow flowers with deep pink markings.

<i>Daviesia costata</i> Species of legume

Daviesia costata is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a straggling, multi-stemmed shrub with scattered, erect, linear phyllodes, and yellow and dark red flowers.

<i>Daviesia crassa</i> Species of flowering plant

Daviesia crassa is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a compact, dense, glabrous shrub with densely crowded, thick, club-shaped phyllodes, and uniformly yellow flowers.

<i>Daviesia crenulata</i> Species of flowering plant

Daviesia crenulata is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a bushy shrub with broadly egg-shaped phyllodes with a sharply-pointed end and wavy edges, and uniformly yellow-orange and maroon flowers.

<i>Daviesia croniniana</i> Species of flowering plant

Daviesia croniniana is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a compact, bushy shrub with hairy foliage, erect, broadly linear phyllodes and yellow or orange and reddish-brown flowers.

<i>Daviesia cunderdin</i> Species of flowering plant

Daviesia cunderdin, commonly known as Cunderdin daviesia, is a species of flowering plant in the family Fabaceae and is endemic to a restricted area in the south-west of Western Australia. It is a compact, densely-branched shrub with scattered, elliptic to egg-shaped phyllodes, and uniformly red flowers.

<i>Daviesia daphnoides</i> Species of flowering plant

Daviesia daphnoides is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a bushy or spreading shrub with glabrous foliage, sharply-pointed narrow elliptic to egg-shaped phyllodes with the narrower end towards the base and yellow and dark red flowers.

References

  1. ↑ "Daviesia debilior". Australian Plant Census. Retrieved 23 November 2021.
  2. 1 2 3 4 "Daviesia debilior subsp. debilior". FloraBase . Western Australian Government Department of Parks and Wildlife.
  3. 1 2 3 4 "Daviesia debilior subsp. sinuans". FloraBase . Western Australian Government Department of Parks and Wildlife.
  4. 1 2 3 Crisp, Michael D.; Cayzer, Lindy; Chandler, Gregory T.; Cook, Lyn G. (2017). "A monograph of Daviesia (Mirbelieae, Faboideae, Fabaceae)". Phytotaxa. 300 (1): 196–199. doi: 10.11646/phytotaxa.300.1.1 .
  5. 1 2 3 4 5 Crisp, Michael (1982). "Daviesia spiralis and D. debilior (Leguminosae:Papilionoideae) two new species occurring in the Wongan Hills, Western Australia". Nuytsia. 4 (1): 11–15. Retrieved 23 November 2021.
  6. ↑ "Daviesia debilior". APNI. Retrieved 9 November 2021.
  7. ↑ "Daviesia debilior subsp. debilior". Australian Plant Census. Retrieved 23 November 2021.
  8. ↑ "Daviesia debilior subsp. sinuans". Australian Plant Census. Retrieved 23 November 2021.
  9. ↑ "Daviesia debilior". FloraBase . Western Australian Government Department of Parks and Wildlife.
  10. ↑ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 9 November 2021.
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