Ricinocarpos trachyphyllus

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Ricinocarpos trachyphyllus
Ricinocarpos trachyphyllus.jpg
Near Cobar
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. trachyphyllus
Binomial name
Ricinocarpos trachyphyllus

Ricinocarpos trachyphyllus is a species of flowering plant in the family Euphorbiaceae and is endemic to eastern Australia. It is an monoecious or dioecious shrub with linear leaves and white flowers, arranged either singly, or with 3 male flowers, or one female flower surrounded by three male flowers.

Contents

Description

Ricinocarpos trachyphyllus is a monoecious or dioecious shrub that typically grows to up to a height 2 m (6 ft 7 in), its young branchlets densely covered with greyish-white, star-shaped hairs. The leaves are linear, 15–45 mm (0.59–1.77 in) long and 0.9–1.2 mm (0.035–0.047 in) wide on a densely hairy petiole 1.0–1.5 mm (0.039–0.059 in) long. The upper surface of the leaves is hairy at first, later glabrous and the lower surface is silky-hairy. The flowers are arranged either as a single male or female flower, with two or three female or two to six male flowers, or with a single female flower surrounded by two male flowers. Male flowers are on a slender pedicel 8–20 mm (0.31–0.79 in) long, the sepals joined at the base and densely hairy, the sepal lobes egg-shaped, 4.5–5.5 mm (0.18–0.22 in) long, the petals white and egg-shaped, 7–12 mm (0.28–0.47 in) long and 4.8–5.3 mm (0.19–0.21 in) wide. Each male flower has 30 to 50 stamens. Female flowers are on a stout, hairy pedicel 5–8 mm (0.20–0.31 in) long, the sepal lobes 5–6 mm (0.20–0.24 in) long and 2.8–4 mm (0.11–0.16 in) long and the petals white, more or less elliptic, 8–9 mm (0.31–0.35 in) long and glabrous. Flowering has been observed in March and from June to November, and the fruit is a more or less spherical capsule 8.0–8.3 mm (0.31–0.33 in) long and 8–9 mm (0.31–0.35 in) wide and covered with star-shaped hairs. [2]

Taxonomy and naming

Ricinocarpos trachyphyllus was first formally described in 2007 by David Halford and Rodney Henderson in the journal Austrobaileya from a specimen collected near Surat by Anthony Bean. [2] [3] The specific epithet (trachyphyllus) means "rough-leaved". [2]

Distribution and habitat

This species grows in open woodland or forest, or in mallee, mulga and spinifex, in two disjunct areas in Queensland and New South Wales. In Queensland it occurs between Charleville and Westmar and in New South Wales from near Cobar to Matakana. [2]

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

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

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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

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<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.

Ricinocarpos marginatus is a species of flowering plant in the family Euphorbiaceae and is endemic to the north-west of Western Australia. It is an erect, monoecious shrub with narrowly elliptic leaves and white flowers arranged in groups of male flowers, or up to three female flowers surrounded by many male flowers.

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

Ricinocarpos psilocladus is a species of flowering plant in the family Euphorbiaceae and is endemic to the west coast of Western Australia. It is an erect, open, monoecious or dioecious shrub with linear to narrowly oblong or narrowly egg-shaped leaves, and white or yellow flowers arranged singly, or with two to five male flowers, or a single female flower surrounded by up to three male flowers.

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.

Ricinocarpos ruminatus is a species of flowering plant in the family Euphorbiaceae and is endemic to the Expedition Range in central Queensland. It is an erect, monoecious shrub with linear leaves and white flowers, arranged on the ends of branches with 2 to 5 male flowers, or a female flower surrounded by up to 4 male flowers.

Ricinocarpos speciosus is a species of flowering plant in the family Euphorbiaceae and is endemic to eastern Australia. It is a slender, erect, open monoecious or dioeciuos shrub with narrowly elliptic or narrowly oblong leaves and white flowers arranged with two or more male flowers, or with one to four female flowers surrounded by up to four male flowers.

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. ↑ "Ricinocarpos trachyphyllus". Australian Plant Census. Retrieved 26 October 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): 429–430. Retrieved 26 October 2023.
  3. ↑ "Ricinocarpos trachyphyllus". Australian Plant Name Index. Retrieved 26 September 2023.
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