Stachystemon vinosus

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Stachystemon vinosus
Status DECF P4.svg
Priority Four — Rare Taxa (DEC)
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. vinosus
Binomial name
Stachystemon vinosus

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.

Contents

Description

Stachystemon vinosus is a compact, monoecious shrub that typically grows to a height of up to 10 cm (3.9 in) and has smooth, glabrous branchlets. Its leaves are well-spaced along the stems and branchlets, narrowly egg-shaped or narrowly oblong, 6–10 mm (0.24–0.39 in) long and 1.5–2.0 mm (0.059–0.079 in) wide on a petiole 0.5–0.9 mm (0.020–0.035 in), with reddish-brown, narrowly triangular stipules 0.8–1.5 mm (0.031–0.059 in) long at the base. Both sides of the leaves are more or less glabrous, but the edges of the leaves are pimply. The flowers are arranged singly in upper leaf axils forming clusters on the ends of branches with reddish brown, triangular bracts about 1.0 mm (0.039 in) long and one or two similar, but smaller bracteoles at the base. Male flowers are on a stout pedicel about 0.5 mm (0.020 in) long with 6 dissimilar tepals in two whorls, the inner whorl purplish-red 6.5–7.0 mm (0.26–0.28 in) long and 1.0–1.5 mm (0.039–0.059 in) wide, the outer whorl 2.5–3.0 mm (0.098–0.118 in) and 1.5–2 mm (0.059–0.079 in) wide. There are 26 to 40 stamens, the anthers dark purplish-red. Female flowers are sessile and usually have 6 white, narrowly egg-shaped tepals 1.5–2.4 mm (0.059–0.094 in) long and 0.4–0.7 mm (0.016–0.028 in) wide. Flowering has been observed from September to November, and the fruit is a compressed oval capsule about 6.5 mm (0.26 in) long. [2] [3] [4]

Taxonomy

Stachystemon vinosus was first formally described in 2003 by David Halford and Rodney Henderson in the journal Austrobaileya from specimens collected near the mouth of the Oldfield River in 1968. [3] [5] The specific epithet (vinosus) means "wine-coloured" or "purplish-red", referring to the colours of the male flowers. [3]

Distribution and habitat

This species grows on fine, loamy sand or stony soils on sandplains, rock crevices and breakaways along the south coast of Western Australia, from near the Oldfield River to Cape Arid National Park in the Esperance Plains and Mallee bioregions of south-western Western Australia. [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.

Ricinocarpos graniticus is a species of flowering plant in the family Euphorbiaceae and is endemic to the southwest of Western Australia. It is a monoecious shrub with linear leaves and creamy white flowers, arranged either singly, or with a single female flower surrounded by one or two male flowers.

<i>Ricinocarpos megalocarpus</i> Species of shrub

Ricinocarpos megalocarpus is a species of flowering plant in the family Euphorbiaceae and is endemic to the south coast of Western Australia. It is a compact, rounded, usually monoecious shrub with linear leaves and white flowers, arranged either singly, or male flowers in groups, or with a single female flower surrounded by up to six male flowers.

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.

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>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.

Ricinocarpos stylosus is a species of flowering plant in the family Euphorbiaceae and is endemic to the Norseman district of Western Australia. It is an spreading, rounded, monoecious or dioeceous shrub or small tree, with linear to narrowly oblong leaves and female flowers arranged singly, or with two to five male flowers, or a single female flower surrounded by up to four male flowers.

References

  1. ↑ "Stachystemon vinosus". Australian Plant Census. Retrieved 7 October 2023.
  2. 1 2 "Stachystemon vinosus". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. 1 2 3 4 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): 525–526. Retrieved 7 October 2023.
  4. 1 2 "Stachystemon vermicularis". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 7 October 2023.
  5. ↑ "Stachystemon vinosus". Australian Plant Name Index. Retrieved 7 October 2023.
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