Cheiridopsis purpurea

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Cheiridopsis purpurea
Cheiridopsis purpurata - RSA 5.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Aizoaceae
Genus: Cheiridopsis
Species:
C. purpurea
Binomial name
Cheiridopsis purpurea
L.Bolus
Synonyms [1]
  • Cheiridopsis purpurataL.Bolus
  • Cheiridopsis splendensL.Bolus

Cheiridopsis purpurea is a species of succulent plant from South Africa. It is found growing in the succulent Karoo vegetation type.

Contents

Description

This small and robus clump-forming succulent grows 8–12 cm (3.1–4.7 in) tall with a diameter of up to 40 cm (16 in). [2] [3] It often becomes raggedy with age. [3] The triangular leaves are paired, with both leaves in each pair being about the same size (3–5 cm (1.2–2.0 in) long). Cultivated specimens may have three pairs of leaves per branch, while those in the wild have one or two pairs per branch. The leaves are fused when young, separating as they mature. [2] They are grey-green in colour with slightly crimped margins and are spotted with transparent dots. [2] [3] They have a keel, which may or may not have teeth. [2] The old leaves form persistent corky brown sheaths that protect new growth when they dry out and die. [2]

Flowers are present between June and September. [2] [4] They are open between midday and sunset, closing for the night and morning. [2] They have a diameter of about 4 cm (1.6 in) and are a bright magenta in colour. [2] [4] This species differs from others in this genus in that the petals do not fully unfold, but hide the stamens and feather stigmas. [2] The anthers are grey. [4]

This plant forms a cylindrical 10-locular fruit. [4] They have stiff bristles at the tips of the expanding keels. [2]

Distribution and habitat

This species is endemic to the Northern Cape of South Africa. It has a range of less than 500 km2 (190 sq mi) between Karrachab and Maerfontein in the Richtersveld region. [4] [5] It is found growing in crevices in quartzite bands in sandstone areas. [5]

History and etymology

This species was first described in 1931 by Harriet Margaret Louisa Bolus. [2] The scientific name refers to the colour of the flowers.

Ecology

This plant is pollinated by insects. [2]

The capsules open when wet, releasing only a few seeds at a time. This ensures that seeds are still available should conditions be more favourable further down the line. This complex capsule is important in light of the relatively short lifespan of this species. [2] It is beneficial to set seed whenever conditions may be suitable for new growth, while still holding out for times when conditions make it more likely that young plants survive.

Conservation

While this species is not currently threatened, it is considered to be rare by the South African National Biodiversity Institute due as it is a habitat specialist and has a small range. The combination of these two factors mean that it is not a common species, even if it is not yet uncommon enough or threatened enough to be considered at risk of extinction. [5]

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References

  1. "Cheiridopsis purpurea". Global Biodiversity Information Facility . Retrieved 3 February 2023.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 Wolfaardt, Lize (2012). "Cheiridopsis purpurea L.Bolus". PlantZAfrica. Retrieved 3 February 2023.
  3. 1 2 3 e-Flora of South Africa. v1.36. 2022. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.36
  4. 1 2 3 4 5 Snijman, D.A. (2013). Plants of the Greater Cape Floristic Regionn, Vol. 2: the Extra Cape flora (PDF). Strelitzia. John Manning, Peter Goldblatt. Pretoria: South African National Biodiversity Institute. ISBN   978-1-919976-74-7. OCLC   866860203.
  5. 1 2 3 Raimondo, D.; Cholo, F. (2009). "Cheiridopsis purpurea L.Bolus. National Assessment: Red List of South African Plants version 2020.1". SANBI Red List of South African Plants. Retrieved 3 February 2023.