Haworthia arachnoidea

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Haworthia arachnoidea
Haworthia arachnoidea 5.jpg
Haworthia arachnoidea
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Asphodelaceae
Subfamily: Asphodeloideae
Genus: Haworthia
Species:
H. arachnoidea
Binomial name
Haworthia arachnoidea
Haw.

Haworthia arachnoidea, locally known as "papierrosie" (paper-rose) or "spinnekopnes" (spider-nest), is the type species of the genus Haworthia , in the family Asphodelaceae, in the Western Cape Province of South Africa. [1]

Contents

Description

The plant has numerous dark green leaves, covered in translucent bristles, in a dense rosette. The leaves themselves are without translucent tips, unlike some other Haworthia species. The rosettes dry and contract in the arid summers.

It is sometimes confused with the widespread Haworthia decipiens (decipiens = deceptive) which occurs in the Great Karoo to the east. However H. decipiens has shorter, flatter, wider leaves; a lighter colour; translucent leaf tips; larger and sparser bristles which are mainly only on the leaf margins; and only a very weak leaf keel. [2]

Distribution

This most well-known form of this species occurs in the Breede River valley, in the areas of Worcester and Robertson (H. arachnoidea var. arachnoidea). Other varieties of this same species occur northwards into the Namaqualand (var. namaquensis), and eastwards as far as Port Elizabeth (vars. xiphiophylla, aranea and setata).

It occurs in a wide range of habitats and usually in the shelter of protective rocks and shading plants. It is a widespread and extremely variable species, with no typical form. There are also a range of intermediate forms between this species and some of its neighbouring species.

Intermediate forms exist in the transition between this species and Haworthia decipiens to the east with and with Haworthia mucronata to the south-east. Many of these intermediates are treated as a variety, and given the name Haworthia arachnoidea var. nigricans. To the north, it joins its relative, Haworthia nortieri . [3]

Subordinate taxa

Related Research Articles

<i>Haworthia</i> Genus of flowering plants

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<i>Gasteria</i> Genus of succulent flowering plants from South Africa

Gasteria is a genus of succulent plants, native to South Africa.

<i>Haworthia cymbiformis</i> Species of succulent

Haworthia cymbiformis is a species of the genus Haworthia in the family Asphodelaceae, endemic to the Eastern Cape Province in South Africa.

<i>Haworthiopsis coarctata</i> Species of succulent

Haworthiopsis coarctata, formerly Haworthia coarctata, is a species of flowering succulent plant from the Eastern Cape Province, South Africa and naturalized in Mexico. It is one of the species of Haworthiopsis that is commonly cultivated as an ornamental.

<i>Haworthia truncata</i> Species of succulent

Haworthia truncata, locally known as horse's teeth, is a species of succulent plant in the genus Haworthia. It is found in the Little Karoo region, in the far east of the Western Cape Province, South Africa.

<i>Haworthia magnifica</i> Species of succulent

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

<i>Haworthia mirabilis</i> Species of succulent

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

<i>Haworthia cooperi</i> Species of succulent

Haworthia cooperi is a diverse and varied species of the genus Haworthia in the family Asphodelaceae, endemic to the Eastern Cape Province in South Africa.

<i>Haworthia retusa</i> Species of succulent

Haworthia retusa is a species of flowering plants of the genus Haworthia in the family Asphodelaceae, endemic to a very small area around Riversdale, in the Western Cape Province in South Africa. Growing to 10 cm (3.9 in) tall and broad, it is a perennial succulent with thick triangular leaves and small white tubular flowers held in 50 cm (20 in) tall racemes.

<i>Haworthia mucronata</i> Species of succulent

Haworthia mucronata is a species of the genus Haworthia in the family Asphodelaceae, endemic to the Little Karoo region, in the Western Cape Province of South Africa.

<i>Haworthia bayeri</i> Species of succulent

Haworthia bayeri is a species of the genus Haworthia in the family Asphodelaceae, endemic to the southern Cape Provinces in South Africa.

<i>Haworthiopsis scabra</i> Species of succulent

Haworthiopsis scabra, formerly Haworthia scabra, is a species of flowering succulent plant from arid regions of the Western and Eastern Cape Provinces, South Africa.

<i>Haworthia zantneriana</i> Species of succulent

Haworthia zantneriana is a species of the genus Haworthia in the family Asphodelaceae, subfamily Asphodeloideae, endemic to the southern parts of the Western Cape and Eastern Cape Provinces in South Africa.

<i>Haworthiopsis bruynsii</i> Species of succulent

Haworthiopsis bruynsii, formerly Haworthia bruynsii, is a rare species of the genus Haworthiopsis in the family Asphodelaceae, endemic to a small area in the Eastern Cape Provinces in South Africa.

<i>Haworthia decipiens</i> Species of succulent

Haworthia decipiens ("Papierrosie") is a species of Haworthia, in the family Asphodelaceae, in the Western Cape and Eastern Cape Provinces of South Africa.

<i>Tulista pumila</i> Species of flowering plant

Tulista pumila ("Vratjiesaalwee") is a species of Tulista succulent plant, from the Western Cape, South Africa.

<i>Tulista kingiana</i> Species of succulent plant from the Western Cape, South Africa

Tulista kingiana is a species of succulent plant, from the Western Cape, South Africa. It is listed as Endangered on the IUCN global Red List.

<i>Haworthia turgida</i> Species of succulent

Haworthia turgida, also sometimes known as the windowpane plant, is a species of Haworthia native to the Cape Provinces. Its common name comes from the translucent panes on its leaves, which are similar to those of Haworthia cooperi and some other species in the genus. It grows in dense clusters of offsets from the base, and in its native habitat prefers rocky limestone or slate cliffs. The main type has pale green leaves but varies widely. Varieties include Haworthia turgida var. longibracteata (M.B.Bayer) and Haworthia turgida var. suberecta (Poelln.)

<i>Haworthia reticulata</i>

Haworthia reticulata is a species of succulent plant native to the southwestern Cape Provinces of South Africa. The species has several varieties, including var. hurlingii which is the smallest at up to 1 inch (2.5 cm) wide.

References

  1. Operation Wildflower
  2. Distinguishing Haworthia arachnoidea from Haworthia decipiens
  3. "Haworthia Revisited - 2. Haworthia arachnoidea - Haworthia Updates".
  4. "Search term=Haworthia arachnoidea". World Checklist of Selected Plant Families. Royal Botanic Gardens, Kew. Retrieved 11 March 2018.