Ricinocarpos brevis

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Ricinocarpos brevis
Status DECF R.svg
Declared rare  (DEC)
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Euphorbiaceae
Genus: Ricinocarpos
Species:
R. brevis
Binomial name
Ricinocarpos brevis

Ricinocarpos brevis is a species of flowering plant in the family Euphorbiaceae and is endemic to inland Western Australia. It is a monoecious, densely-branched shrub with narrowly oblong leaves and male and female flowers arranged singly or in small groups.

Contents

Description

Ricinocarpos brevis is a monoecious shrub that typically grows to height of 1.0–1.8 m (3 ft 3 in – 5 ft 11 in) and is densely and intricately branched. The leaves are densely hairy and narrowly oblong, mostly 7–30 mm (0.28–1.18 in) long and 1.4–2.0 mm (0.055–0.079 in) wide on a short petiole. The flowers are arranged singly, or with two female, or one female and one or two male flowers. The flowers are conspicuous and arranged on a pedicel densely covered with woolly white, star-shaped hairs. Male flowers are on a thin pedicel 4–8 mm (0.16–0.31 in) long, the sepals covered with woolly, white, star-shaped hairs. Male flowers have egg-shaped, white petals outlined in red, 4.3–5.8 mm (0.17–0.23 in) long and 2.5–3.2 mm (0.098–0.126 in) wide. Female flowers are usually on a stout pedicel 2–5 mm (0.079–0.197 in) long, the sepals densely hairy, the petals white but turning brown, 2.3–4.1 mm (0.091–0.161 in) long and 1.5–1.8 mm (0.059–0.071 in) wide. Flowering has been observed in June, July and November, and the fruit is an elliptic or oval capsule 8–9 mm (0.31–0.35 in) long and covered with star-shaped hairs. [2] [3]

Taxonomy and naming

Ricinocarpos brevis was first formally described in 2007 by Rodney John Francis Henderson and Frans Hendricus Mollemans in the journal Austrobaileya , from specimens collected north of Southern Cross in 1990. [2] [4]

Distribution and habitat

This species grows in shrubland on rocky hills and outcrops, and is only known from the Windarling Range north of Southern Cross, at altitudes between 500 and 550 m (1,640 and 1,800 ft). [2] [3]

Conservation status

Ricinocarpos brevis is listed as "Threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions. [3]

Related Research Articles

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

Ricinocarpos is a genus of evergreen flowering plants in the family Euphorbiaceae and is endemic to Australia. Plants in the genus Ricinocarpos are monoecious shrubs with leaves arranged alternately along the branches, the edges curved downwards or rolled under. Male flowers are arranged singly or in racemes at the ends of branchlets, with four to six sepals that are fused at the base. There are four to six petals that are longer than the sepals, with many stamens fused to form a central column. Female flowers are arranged singly and are similar to male flowers but with three styles fused at the base and with a deeply branched tip. The fruit is a capsule containing seeds with an elaiosome.

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<i>Boronia excelsa</i> Species of flowering plant

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<i>Boronia wilsonii</i> Species of flowering plant

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<i>Philotheca epilosa</i> Species of plant

Philotheca epilosa is a species of flowering plant in the family Rutaceae and is endemic to eastern Australia. It is a shrub with egg-shaped to lance-shaped leaves with the narrower end toward the base and crowded near the ends of the glandular-warty branchlets, and white flowers usually arranged singly on the ends of the branchlets.

<i>Philotheca glasshousiensis</i> Species of plant

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<i>Philotheca pachyphylla</i> Species of plant

Philotheca pachyphylla is a species of flowering plant in the family Rutaceae and is endemic to Western Australia. It is a small shrub with fleshy, oblong, prominently glandular-warty leaves and white flowers arranged singly in leaf axils.

<i>Philotheca queenslandica</i> Species of plant

Philotheca queenslandica is a species of flowering plant in the family Rutaceae and is endemic to south-eastern Queensland. It is a wiry shrub with elliptic to egg-shaped leaves with the narrower end toward the base and densely crowded near the ends of the glandular-warty branchlets, and cream-coloured flowers tinged with pink and arranged singly in leaf axils.

<i>Pityrodia spenceri</i> Species of flowering plant

Pityrodia spenceri is a species of flowering plant in the mint family Lamiaceae and is endemic to the northern part of the Northern Territory. It is an erect shrub with hairy, heart-shaped or egg-shaped leaves, and white, tube-shaped flowers.

Androcalva inglewoodensis is a species of flowering plant in the family Malvaceae and is endemic to south-eastern Queensland. It is a spreading, prostrate shrub that has hairy young branchlets, egg-shaped to elliptic leaves with irregularly serrated edges, and small groups of white to cream-coloured flowers.

<i>Androcalva johnsonii</i> Species of shrub

Androcalva johnsonii is a species of flowering plant in the family Malvaceae and is endemic to central Queensland. It is a low, spreading shrub that has hairy young branches, narrowly egg-shaped or oblong leaves with rounded teeth, and small groups of white to pale pink flowers.

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

Ricinocarpos bowmanii, commonly known as western wedding bush or Bowman jasmine, is a species of flowering plant in the family Euphorbiaceae and is endemic to New South Wales. It is usually a monoecious shrub with linear to oblong leaves and three to six male flowers around each female flower.

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

Ricinocarpos caniana is a species of flowering plant in the family Euphorbiaceae and is endemic to a restricted area of south-eastern Queensland. It is an erect monoecious or dioecious shrub with linear leaves and white flowers, arranged either singly, with two to five male flowers, or a single female flower surrounded by up to four male flowers.

Ricinocarpos crispatus is a species of flowering plant in the family Euphorbiaceae and is endemic to south-western Queensland. It is a monoecious or dioecious shrub with linear leaves and white flowers, arranged either singly, with two to four male flowers, or a single female flower surrounded by one or two male flowers.

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

Ricinocarpos cyanescens is a species of flowering plant in the family Euphorbiaceae and is endemic to the south-west of Western Australia. It is a compact, monoecious shrub with narrowly oblong leaves and male and female flowers arranged singly or in small groups.

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

Ricinocarpos glaucus is a species of flowering plant in the family Euphorbiaceae and is endemic to the south-west of Western Australia. It is an erect, monoecious or dioecious shrub with linear or narrowly oblong leaves and male and female flowers arranged singly or in small groups.

<i>Ricinocarpos gloria-medii</i> Species of shrub

Ricinocarpos gloria-medii is a species of flowering plant in the family Euphorbiaceae and is endemic to the Northern Territory of Australia. It is a spreading, monoecious or dioecious shrub with linear leaves and male and female flowers arranged singly or in small groups.

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 ledifolius</i> Species of shrub

Ricinocarpos ledifolius is a species of flowering plant in the family Euphorbiaceae and is endemic to eastern Queensland. It is a monoecious or dioecious shrub or small tree with linear leaves and white flowers, arranged either singly, or with two or three female or two to six male flowers, or a single female flower surrounded by two male flowers.

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

Ricinocarpos linearifolius is a species of flowering plant in the family Euphorbiaceae and is endemic to eastern Australia. It is a monoecious or dioecious shrub with hairy young branchlets, linear leaves and white flowers, arranged either singly, with two to four male flowers, or a single female flower surrounded by up to three male flowers.

References

  1. "Ricinocarpos brevis". Australian Plant Census. Retrieved 13 August 2023.
  2. 1 2 3 Halford, David A.; Henderson, Rodney J.F. (2007). "A taxonomic revision of Ricinocarpos Desf. (Euphorbiaceae: Ricinocarpeae, Ricinocarpinae)". Austrobaileya. 7 (3): 399–401. Retrieved 15 August 2023.
  3. 1 2 3 "Ricinocarpos brevis". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. "Ricinocarpos brevis". Australian Plant Name Index. Retrieved 15 August 2023.