Ricinocarpos caniana

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Ricinocarpos caniana
Ricinocarpos caniana.jpg
Male flowers
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. caniana
Binomial name
Ricinocarpos caniana

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.

Contents

Description

Ricinocarpos caniana is an erect, monoecious or dioecious shrub that typically grows to height of up to 2 m (6 ft 7 in), its young branchlets densely covered with greyish-white, star-shaped hairs. The leaves are linear, 45–100 mm (1.8–3.9 in) long and 2–4 mm (0.079–0.157 in) wide on a densely hairy petiole 2.5–4 mm (0.098–0.157 in) long. The upper surface of the leaves soon becomes glabrous and the lower surface is silky-hairy. The flowers are arranged either as a single male or female flower, or as clusters of two to five male flowers, or with a single female flower surrounded by up to four male flowers. Male flowers are on a slender, densely hairy pedicel 9–17 mm (0.35–0.67 in) long, the sepals joined at the base and densely hairy, the sepal lobes egg-shaped to elliptic and 4.3–5.8 mm (0.17–0.23 in) long, the petals white and egg-shaped, 9 mm (0.35 in) long and 4.7 mm (0.19 in) wide. Each male flower has about 50 stamens. Female flowers are on a stout, hairy pedicel 7–14 mm (0.28–0.55 in) long, the sepal lobes 4.5–5.0 mm (0.18–0.20 in) long and 2.2–3.0 mm (0.087–0.118 in) long and the petals white and egg-shaped with the narrower end towards the base and 7.0–7.5 mm (0.28–0.30 in) long. Flowering has been observed in August, and the fruit is a more or less spherical capsule 10–11 mm (0.39–0.43 in) in diameter and covered with star-shaped hairs. [2]

Taxonomy and naming

Ricinocarpos caniana was first formally described in 2007 by David Halford and Rodney Henderson in the journal Austrobaileya from specimens collected in Cania Gorge National Park in 1999. [2] [3] The specific epithet (caniana) is derived from the name of the type location. [2]

Distribution and habitat

This species is only known from the type location in south-eastern Queensland, where it grows in forest with a dense shrubby understorey, between sandstone rocks on a steep scree slope. [2]

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>Philotheca queenslandica</i> Species of plant

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Hibbertia hendersonii is a species of flowering plant in the family Dilleniaceae and is endemic to the Blackdown Tableland in Queensland. It is an erect shrub with densely hairy foliage, narrow elliptic leaves, and yellow flowers, each usually with twenty to thirty-one stamens arranged on one side of the two carpels.

Pimelea rupestris is a species of flowering plant in the family Thymelaeaceae and is endemic to eastern Australia. It is a shrub with hairy young stems, elliptic to egg-shaped leaves with the narrower end towards the base, and heads of white flowers that are either all male or all female.

<i>Commersonia macrostipulata</i> Species of flowering plant

Commersonia macrostipulata is a species of flowering plant in the family Malvaceae and is endemic to Queensland. It is a shrub or tree with egg-shaped leaves that are slightly serrated on the edges, flowers with five cream-coloured to white sepals and bristly fruit.

Androcalva argentea is a species of flowering plant in the family Malvaceae and is endemic to Queensland. It is a tall shrub that forms suckers from rhizomes and has silvery branchlets and leaves, the leaves egg-shaped with wavy edges and serrated, and dense clusters of 10 to 30 white to cream-coloured flowers.

Androcalva beeronensis is a species of flowering plant in the family Malvaceae and is endemic to Queensland. It is a shrub that forms suckers from rhizomes and has branchlets and leaves covered with soft, golden hairs, the leaves egg-shaped to lance-shaped with toothed edges, and clusters of 9 to 24 cream-coloured to white 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.

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.

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 caniana". Australian Plant Census. Retrieved 16 August 2023.
  2. 1 2 3 4 Halford, David A.; Henderson, Rodney J.F. (2007). "A taxonomic revision of Ricinocarpos Desf. (Euphorbiaceae: Ricinocarpeae, Ricinocarpinae)". Austrobaileya. 7 (3): 401–402. Retrieved 16 August 2023.
  3. "Ricinocarpos caniana". Australian Plant Name Index. Retrieved 16 August 2023.