Ricinocarpos gloria-medii

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Ricinocarpos gloria-medii
Ricinocarpos gloria-medii.jpg
In the Australian National Botanic Gardens
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. gloria-medii
Binomial name
Ricinocarpos gloria-medii

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.

Contents

Description

Ricinocarpos gloria-medii is a spreading monoecious or diocious shrub that typically grows to height of up to 2 m (6 ft 7 in) with rusty-hairy young branchlets. The leaves are linear, 25–60 mm (0.98–2.36 in) long and 1.3–3.5 mm (0.051–0.138 in) wide on a densely hairy petiole 2–3 mm (0.079–0.118 in) long. The upper surface of the leaves is more or less glabrous and the lower surface is covered with soft, white, woolly hairs. The flowers are arranged singly, or with two to four male flowers, or one female surrounded by up to four male flowers. Male flowers are on a slender, densely hairy pedicel 7–17 mm (0.28–0.67 in) long, the sepals covered with woolly, white, star-shaped hairs on the inside surface. The sepal lobes of male flowers are egg-shaped, 4.5–7 mm (0.18–0.28 in) long and the petals egg-shaped, white or cream-coloured, 7–11 mm (0.28–0.43 in) long and 3–5 mm (0.12–0.20 in) wide. Female flowers are on a stout pedicel 10–15 mm (0.39–0.59 in) long, the sepals densely hairy on the inside surface, the petals white or cream-coloured, 6.5–8 mm (0.26–0.31 in) long and 3–4 mm (0.12–0.16 in) wide. Flowering has been observed in June and July, and the fruit is a more or less spherical capsule 10–11 mm (0.39–0.43 in) long and wide. [2] [3]

Taxonomy and naming

Ricinocarpos gloria-medii was first formally described in 1975 by James Hamlyn Willis in the journal Muelleria , from specimens collected at Simpsons Gap in 1972. [4] The specific epithet (gloria-medii), means "glory of the centre". [3]

Distribution and habitat

This species grows in sheltered places in dry watercourses and at the base of cliffs in the MacDonnell Ranges in the Northern Territory. [3]

Related Research Articles

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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>Androcalva multiloba</i> Species of shrub

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<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.

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.

References

  1. "Ricinocarpos gloria-medii". Australian Plant Census. Retrieved 29 August 2023.
  2. Halford, David A.; Henderson, Rodney J.F. (2007). "A taxonomic revision of Ricinocarpos Desf. (Euphorbiaceae: Ricinocarpeae, Ricinocarpinae)". Austrobaileya. 7 (3): 408–410. Retrieved 29 August 2023.
  3. 1 2 3 Willis, James H. (1975). "our new species of plants in the Macdonnell and George Gill Ranges, Central Australia". Muelleria. 3 (2): 95–99. Retrieved 29 August 2023.
  4. "Ricinocarpos gloria-medii". Australian Plant Name Index. Retrieved 29 August 2023.