Pseudanthus ovalifolius

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Pseudanthus ovalifolius
Pseudanthus ovalifolius.jpg
Near Kamarooka
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Picrodendraceae
Genus: Pseudanthus
Species:
P. ovalifolius
Binomial name
Pseudanthus ovalifolius
Synonyms [1]
  • Caletia ovalifolia(F.Muell.) Müll.Arg.
  • Caletia wilhelmiMüll.Arg. nom. inval., pro syn.

Pseudanthus ovalifolius, commonly known as oval-leaf pseudanthus, [2] is a species of flowering plant in the family Picrodendraceae and is endemic to south-eastern Australia. It is a spreading to compact, wiry, monoecious shrub with oval leaves and whitish flowers arranged singly in upper leaf axils, but sometimes appearing clustered on the ends of branches.

Contents

Description

Pseudanthus ovalifolius is a spreading to compact, wiry monoecious shrub that typically grows to a height of 30 cm (12 in) and has glabrous branchlets. Its leaves are oval, elliptic or more or less round, 2.2–5.0 mm (0.087–0.197 in) long and 1.0–2.1 mm (0.039–0.083 in) wide on a petiole 0.1–0.4 mm (0.0039–0.0157 in) long with reddish-brown, broadly triangular stipules 0.5–0.9 mm (0.020–0.035 in) long at the base. The flowers are arranged singly in leaf axils, but sometimes appear clustered on the ends of branches with egg-shaped bracts 1.0–1.5 mm (0.039–0.059 in) long at the base. Male flowers are on a pedicel 0.5–1.3 mm (0.020–0.051 in) long, the 6 tepals narrowly oblong to oblong and whitish, 1.3–3.4 mm (0.051–0.134 in) long and 0.5–0.8 mm (0.020–0.031 in) wide and there are 6 stamens. Female flowers are sessile, the 5 or 6 tepals reddish-brown and creamy white, 1.1–2.2 mm (0.043–0.087 in) long and 0.2–0.6 mm (0.0079–0.0236 in) wide. Flowering has been observed from February to November, and the fruit is a green, oval capsule 3.5–4.0 mm (0.14–0.16 in) long. [2] [3] [4] [5]

Taxonomy and naming

Pseudanthus ovalifolius was first formally described in 1857 by Ferdinand von Mueller in Transactions of the Philosophical Institute of Victoria. [6] [7] The specific epithet (ovalifolius) means "oval-leaved". [8]

Distribution and habitat

This species of shrub grows on rocky hillsides in heath, shrubland and mallee in scattered locations from near Eden in New South Wales, in the Grampians, near Bendigo and Ballarat in Victoria, and on Cape Barren and Flinders Islands in Tasmania. [2] [3] [4] [9]

Conservation status

Pseudanthus ovalifolius is listed as "vulnerable" under the Victorian Government Flora and Fauna Guarantee Act 1988 and as "endangered" under the New South Wales Government Biodiversity Conservation Act 2016 . The main threats to the species include land clearing, grazing by domestic stock and feral goats, and inappropriate fire regimes. [2] [4] [5]

Related Research Articles

<i>Pseudanthus</i> Genus of flowering plants

Pseudanthus is a genus of nine species of flowering plants in the family Picrodendraceae, and is endemic to Australia. Plants in the genus Pseudanthus are small, heath-like, monoecious shrubs with simple, leathery leaves, and flowers arranged in upper leaf axils, male flowers usually with three or six stamens and female flowers with three styles.

<i>Dillwynia phylicoides</i> Species of plant

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<i>Rinzia orientalis</i> Species of plant

Rinzia orientalis, commonly known as desert heath-myrtle, is a species of flowering plant in the family Myrtaceae and is endemic to south-eastern Australia. It is a shrub with elliptic to narrowly oblong leaves and white or pale pink flowers usually with ten stamens.

<i>Pseudanthus pimeleoides</i> Species of shrub

Pseudanthus pimeleoides is a species of flowering plant in the family Picrodendraceae and is endemic to New South Wales. It is a monoecious shrub with crowded, linear to narrowly egg-shaped leaves and creamy white male flowers and inconspicuous female arranged singly in upper leaf axils, but appearing clustered on the ends of branches.

<i>Stachystemon polyandrus</i> Species of plant

Stachystemon polyandrus is a species of flowering plant in the family Picrodendraceae and is endemic to the southwest of Western Australia. It is a diffuse to straggling, monoecious shrub with crowded, oblong, elliptic or egg-shaped leaves with the narrower end towards the base, and small yellowish-white flowers arranged singly in upper leaf axils, but forming clusters at the ends of branches.

Pseudanthus ballingalliae is a species of flowering plant in the family Picrodendraceae and is endemic to Queensland. It is a monoecious shrub with simple, oblong to narrowly oblong leaves and small yellow male and green female flowers arranged singly in upper leaf axils, but appearing clustered on the ends of branches.

<i>Stachystemon axillaris</i> Species of shrub

Stachystemon axillaris, commonly known as leafy stachystemon, is a species of flowering plant in the family Picrodendraceae and is endemic to the south-west of Western Australia. It is a monoecious shrub with simple, linear to narrowly elliptic or oblong leaves and small yellow flowers arranged singly in upper leaf axils.

<i>Pseudanthus ligulatus</i> Species of shrub

Pseudanthus ligulatus is a species of flowering plant in the family Picrodendraceae and is endemic to northern Queensland. It is a monoecious shrub with simple, lance-shaped or linear to narrowly oblong leaves and creamy white male and pale green female flowers arranged singly in upper leaf axils, but appearing clustered on the ends of branches.

Stachystemon brachyphyllus is a species of flowering plant in the family Picrodendraceae and is endemic to the south-west of Western Australia. It is a monoecious shrub with simple, narrowly elliptic to elliptic or oblong leaves and small yellow, red, purple and brown flowers arranged singly in upper leaf axils.

Pseudanthus micranthus, commonly known as fringed pseudanthus, is a species of flowering plant in the family Picrodendraceae and is endemic to the south-east of South Australia. It is a compact, monoecious shrub with simple, egg-shaped to round leaves and yellow flowers arranged in leaf axils, but appearing clustered on the ends of branches.

Stachystemon intricatus is a species of flowering plant in the family Picrodendraceae and is endemic to the south-west of Western Australia. It is a compact, densely-branched, monoecious shrub with crowded, elliptic or egg-shaped leaves and small, cup-shaped white flowers arranged singly in upper leaf axils.

<i>Brachyloma ciliatum</i> Species of plant

Brachyloma ciliatum, commonly known as fringed brachyloma or fringed daphne heath, is a species of flowering plant in the family Ericaceae and is endemic to south-eastern Australia. It is a low-lying or erect shrub with upwards-pointing, egg-shaped to oblong leaves and white, tube-shaped flowers.

<i>Pseudanthus orbicularis</i> Species of shrub

Pseudanthus orbicularis is a species of flowering plant in the family Picrodendraceae and is endemic to south-eastern continental Australia. It is a compact, monoecious shrub with simple, broadly elliptic to round leaves and creamy white, red or pale red flowers arranged singly in upper leaf axils.

Stachystemon mucronatus is a species of flowering plant in the family Picrodendraceae and is endemic to the south-west of Western Australia. It is a compact, monoecious shrub with narrowly oblong or narrowly elliptic leaves and small, greenish yellow flowers arranged singly in upper leaf axils.

<i>Pseudanthus orientalis</i> Species of shrub

Pseudanthus orientalis is a species of flowering plant in the family Picrodendraceae and is endemic to the coast of eastern Australia. It is a compact, rigid, monoecious shrub with simple, linear to narrowly oblong leaves and yellow to creamy-white flowers arranged singly in upper leaf axils, but often appearing clustered on the ends of branches.

Stachystemon nematophorus is a species of flowering plant in the family Picrodendraceae and is endemic to the Kalbarri National Park in Western Australia. It is a woody, dense, compact, monoecious shrub with simple, oblong, elliptic or egg-shaped leaves with the narrower end towards the base, and small yellowish flowers arranged singly in upper leaf axils, but forming clusters at the ends of branches.

Pseudanthus pauciflorus is a species of flowering plant in the family Picrodendraceae and is endemic to eastern Australia. It is a compact, monoecious shrub with simple, lance-shaped or narrowly elliptic to narrowly oblong leaves and creamy white flowers arranged singly in upper leaf axils, but appearing clustered on the ends of branches.

Stachystemon vermicularis is a species of flowering plant in the family Picrodendraceae and is endemic to the southwest of Western Australia. It is a diffuse, monoecious shrub with linear leaves and small red male flowers and yellowish female flowers arranged singly in upper leaf axils, but forming clusters at the ends of branches.

Stachystemon vinosus is a species of flowering plant in the family Picrodendraceae and is endemic to the southwest of Western Australia. It is a compact, monoecious shrub with narrowly egg-shaped or narrowly oblong leaves and maroon to purplish red and white male flowers and white female flowers arranged singly in upper leaf axils, but forming clusters at the ends of branches.

Stachystemon virgatus is a species of flowering plant in the family Picrodendraceae and is endemic to the southwest of Western Australia. It is a compact monoecious shrub with elliptic or narrowly oblong leaves and small yellow flowers arranged singly in upper leaf axils.

References

  1. 1 2 "Pseudanthus ovalifolius". Australian Plant Census. Retrieved 25 September 2023.
  2. 1 2 3 4 Jeanes, Jeff A.; Stajsic, Val. "Pseudanthus ovalifolius". Royal Botanic Gardens Victoria. Retrieved 25 September 2023.
  3. 1 2 Halford, David A.; Henderson, Rodney J.F. (2003). "Studies in Euphorbiaceae A.L.Juss. sens. lat. 5. A revision of Pseudanthus Sieber ex Spreng. and Stachystemon Planch. (Oldfieldioideae Kohler & Webster, Caletieae Mull.Arg.)". Austrobaileya. 6 (3): 509–510. Retrieved 25 September 2023.
  4. 1 2 3 James, Teresa A.; Harden, Gwen J. "Pseudanthus ovalifolius". Royal Botanic Garden Sydney. Retrieved 25 September 2023.
  5. 1 2 "Oval-leafed Pseudanthus - profile". New South Wales Government Office of Environment and Heritage. Retrieved 25 September 2023.
  6. ↑ "Pseudanthus ovalifolius". Australian Plant Name Index. Retrieved 25 September 2023.
  7. ↑ von Mueller, Ferdinand (1857). "Account of some new Australian plants". Transactions of the Philosophical Institute of Victoria. 2: 66. Retrieved 25 September 2023.
  8. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 267. ISBN   9780958034180.
  9. ↑ Jordan, Greg. "Pseudanthus ovalifolius". University of Tasmania. Retrieved 25 September 2023.
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