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Haworthia mirabilis

From Wikipedia, the free encyclopedia

Haworthia mirabilis
Haworthia mirabilis in habitat at the type locality
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Asphodelaceae
Subfamily: Asphodeloideae
Genus: Haworthia
Species:
H. mirabilis
Binomial name
Haworthia mirabilis
(Haw.) Haw.
Synonyms
  • Aloe mirabilis Haw.
  • Apicra mirabilis (Haw.) Willd.
  • Catevala mirabilis (Haw.) Kuntze
  • Haworthia beukmanii
  • Haworthia retusa var. mirabilis (Haw.) Halda
  • Haworthia willowmorensis

Haworthia mirabilis is a species of the genus Haworthia belonging to the family Asphodelaceae.

Etymology

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The genus name Haworthia honors the British botanist Adrian Hardy Haworth (1767–1833), while the species epitheton mirabilis derives from Latin and means "wonderful".

Description

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Haworthia mirabilis specimen at the type locality, showing this species' distinctive bristles along the leaf margins, sharply pointed leaf tips and lined upper leaf face.

Haworthia mirabilias is a succulent evergreen slow-growing species reaching a size of 4 to 45 centimetres (1.6 to 17.7 in) in height. It is usually a solitary stemless plant. The leaves are green, with longitudinal pale green lines along the upper surfaces and small teeth along the margins. They turn to brownish or reddish in the sun. The leaves form a rosette and the flowers are white and small, in an inflorescence.

This highly variable species is one of the "retuse" species of Haworthia, meaning that it usually grows sunken beneath the ground with its flattened leaves only showing on the surface. Its rosette of succulent leaves are turned back ("retuse") so as to provide a flat and level face on the surface of the ground. In this form, it is similar to other retuse haworthias (e.g. Haworthia pygmaea, Haworthia bayeri, Haworthia springbokvlakensis, Haworthia magnifica, Haworthia emelyae and Haworthia retusa).

However Haworthia mirabilias can be distinguished from its relatives by the marginal bristles on the leaves, and the way that the leaves end in sharp points. They also usually have lines on the upper leaf faces.

Varieties

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(*The names in bold in the list below are recognized as accepted names by WCSP as of February, 2018.[1] )

Further subdivisions

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Variety calcarea is sometimes included in Haworthia rossouwii instead, as Haworthia rossouwii var. calcarea).[7]

  • Haworthia mirabilis var. mirabilis, the type variety.
    Haworthia mirabilis var. mirabilis, the type variety.
  • Haworthia mirabilis var. badia, the reddish-brown attenuate variety, sometimes considered the separate species Haworthia badia.
    Haworthia mirabilis var. badia, the reddish-brown attenuate variety, sometimes considered the separate species Haworthia badia.
  • Haworthia mirabilis var. calcarea, a compact form with incurved leaf tips
    Haworthia mirabilis var. calcarea, a compact form with incurved leaf tips
  • Haworthia mirabilis var. triebneriana, a smaller, compact variety with slender recurved leave tips
    Haworthia mirabilis var. triebneriana, a smaller, compact variety with slender recurved leave tips
  • Haworthia mirabilis var. sublineata, from south of Bredasdorp, has extremely slender, pointed, lined leaves.
    Haworthia mirabilis var. sublineata, from south of Bredasdorp, has extremely slender, pointed, lined leaves.
  • The dark, scabrid, rough-surfaced Haworthia mirabilis var. magnifica, often considered a separate species Haworthia magnifica
    The dark, scabrid, rough-surfaced Haworthia mirabilis var. magnifica, often considered a separate species Haworthia magnifica
  • The tiny, dark-coloured Haworthia mirabilis var. maraisii, usually considered a separate species Haworthia maraisii.
    The tiny, dark-coloured Haworthia mirabilis var. maraisii, usually considered a separate species Haworthia maraisii.
  • The small, compact form Haworthia mirabilis var. mundula
    The small, compact form Haworthia mirabilis var. mundula

Distribution

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This species is native to the Western Cape, South Africa. Specifically it occurs in the Overberg District, near the far southern point of the country.

Habitat

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It grows in rocky areas, especially slopes or ridges, at an altitude of about 500 meters. In habitat it is often found growing in the partial shelter of bushes or shrubs.

Notes

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  1. ^ "Search Term = haworthia mirabilis". World Checklist of Selected Plant Families. the Royal Botanical Gardens, Kew. Archived from the original on 21 May 2018. Retrieved 22 February 2018.
  2. ^ "Haworthia mirabilis Haworth. (1977) - Haworthia Updates".
  3. ^ "Haworthia Revisited - 21. Haworthia mirabilis - Haworthia Updates".
  4. ^ "Search Term = haworthia magnifica". World Checklist of Selected Plant Families. the Royal Botanical Gardens, Kew. Archived from the original on 21 May 2018. Retrieved 22 February 2018.
  5. ^ "The 'Retuse' Haworthias (1975) - Haworthia Updates".
  6. ^ "Search term = Haworthia maraisii". World Checklist of Selected Plant Families. the Royal Botanical Gardens, Kew. Archived from the original on 21 May 2018. Retrieved 22 February 2018.
  7. ^ "Haworthia rossouwii var. calcarea (M.B.Bayer) M.B.Bayer". Plants of the World Online (POWO). Royal Botanic Gardens, Kew. Retrieved 13 February 2023.

References

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Bibliography

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Wikimedia Commons has media related to Haworthia mirabilis.
Wikispecies has information related to Haworthia mirabilis.
  1. Gibbs Russell, G. E., W. G. Welman, E. Reitief, K. L. Immelman, G. Germishuizen, B. J. Pienaar, M. v. Wyk & A. Nicholas. 1987. List of species of southern African plants. Mem. Bot. Surv. S. Africa 2(1–2): 1–152(pt. 1), 1–270(pt. 2).
  2. Natl. Cact. Succ. J. 32: 18 (1977).
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