Stachystemon virgatus

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Stachystemon virgatus
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Picrodendraceae
Genus: Stachystemon
Species:
S. virgatus
Binomial name
Stachystemon virgatus
Synonyms [1]
  • Chorizotheca micrantheoides Müll.Arg.
  • Chrysostemon virgatusKlotzsch
  • Pseudanthus nitidusMüll.Arg.
  • Pseudanthus occidentalis F.Muell.
  • Pseudanthus virgatus(Klotzsch) Müll.Arg.

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.

Contents

Description

Stachystemon virgatus is a compact, monoecious shrub that typically grows to a height of up to 40 cm (16 in) and has smooth, glabrous branchlets. Its leaves are well-spaced along the stems and branchlets, elliptic or narrowly oblong, 1.9–9.7 mm (0.075–0.382 in) long and 1.3–3.1 mm (0.051–0.122 in) wide on a petiole 0.4–0.8 mm (0.016–0.031 in), with tapering stipules 0.9–1.6 mm (0.035–0.063 in) long at the base. The flowers are arranged singly in upper leaf axils with narrowly triangular, glabrous bracts 0.2–0.4 mm (0.0079–0.0157 in) long and one or two similar, but smaller bracteoles at the base. Male flowers are on a stout pedicel 1.5–3 mm (0.059–0.118 in) long with usually 4 egg-shaped, yellow tepals, 1.1–1.8 mm (0.043–0.071 in) long and 0.8–1.1 mm (0.031–0.043 in) wide. There are mostly 10 to 14 stamens, the anthers yellow. Female flowers are sessile or on a pedicel up to 0.8 mm (0.031 in) long and usually have 4 narrowly egg-shaped, greenish-yellow tepals 1.0–1.8 mm (0.039–0.071 in) long and 0.3–0.6 mm (0.012–0.024 in) wide. Flowering has been observed from September to November, and the fruit is an elliptical or oval capsule 4.5–6.0 mm (0.18–0.24 in) long. [2] [3] [4]

Taxonomy

This species was first formall described was first formally described in 1848 by Johann Friedrich Klotzsch, who gave it the name Chrysostemon virgatus in Lehmann's Plantae Preissianae near York in 1839. [5] [6] In 2003, David Halford and Rodney Henderson transferred the species to the genus Stachystemon as S. virgatus in the journal Austrobaileya . [3] [7] The specific epithet (virgatus) means "having long, slender branches". [8]

Distribution and habitat

Stachystemon virgatus along the coast of Western Australia between the Stirling Range and Esperance and between Busselton, Bunbury and near York. It grows in mallee heath, in woodland, heath on sandplain, in rocky crevices and in swampy areas. [2] [3] [4]

Related Research Articles

<i>Stachystemon</i>

Stachystemon is a genus of nine species of flowering plants in the family Picrodendraceae, and is endemic to Western Australia. Plants in the genus Stachystemon are monoecious shrubs with simple, usually thickened leaves, and flowers arranged singly or in small groups in upper leaf axils, male flowers usually with four to six tepals, usually with seven to many stamens, and female flowers with four or six tepals and two styles in each flower.

<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.

Ricinocarpos oliganthus is a species of flowering plant in the family Euphorbiaceae and is endemic to a small area in the south-west of Western Australia. It is a monoecious shrub with linear to narrowly oblong leaves and white to creamy white flowers arranged singly on the ends of branchlets.

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.

Ricinocarpos pilifer is a species of flowering plant in the family Euphorbiaceae and is endemic to a small area in the south-west of Western Australia. It is a compact monoecious shrub with narrowly oblong leaves and creamy white flowers arranged singly, or with two to four male flowers, or a single female flower with one or two male 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.

Ricinocarpos rosmarinifolius is a species of flowering plant in the family Euphorbiaceae and is endemic to the Kimberley of northern Western Australia. It is an erect, slender monoecious shrub with linear leaves and inconspicuous white flowers arranged singly, or with two to four male flowers, or a single female flower surrounded by up to four male flowers.

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

Pseudanthus ovalifolius, commonly known as oval-leaf pseudanthus, 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.

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.

References

  1. 1 2 "Stachystemon virgatus". Australian Plant Census. Retrieved 12 October 2023.
  2. 1 2 "Stachystemon vinosus". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. 1 2 3 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): 526–528. Retrieved 12 October 2023.
  4. 1 2 "Stachystemon virgatus". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 12 October 2023.
  5. ↑ "Chrysostemon virgatus". Australian Plant Name Index. Retrieved 12 October 2023.
  6. ↑ Klotzsch, Johann F.; Lehmann, Johann G.C. (1848). Plantae Preissianae. Hamburg: Sumptibus Meissneri. pp. 232–233. Retrieved 12 October 2023.
  7. ↑ "Stachystemon vinosus". Australian Plant Name Index. Retrieved 12 October 2023.
  8. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 336. ISBN   9780958034180.
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