| Haworthiopsis nigra | |
|---|---|
 | |
| Haworthiopsis nigra var. nigra | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Asphodelaceae |
| Subfamily: | Asphodeloideae |
| Tribe: | Aloeae |
| Genus: | Haworthiopsis |
| Species: | H. nigra |
| Binomial name | |
| Haworthiopsis nigra (Haw.) G.D.Rowley [1] | |
| Synonyms [1] | |
| |
Haworthiopsis nigra, formerly Haworthia nigra, is a species of flowering succulent plant from the Western and Eastern Cape Provinces, South Africa.
Haworthiopsis nigra typically grows its leaves in three tiers (though some varieties have multifarious leaf arrangement). The leaves, which are a very dark green to brownish black, are covered in dark tubercles, and are packed densely along its stems.
The species was formerly placed in Haworthia subgenus Hexangulares. Phylogenetic studies have demonstrated that subgenus Hexangulares is actually relatively unrelated to other Haworthias (being more closely related to Gasteria ). The species was therefore moved to Haworthiopsis. [2] [3]
This species extends across the southern part of South Africa. The variety "diversifolia" occurs in the west of its range, in the Western Cape Province around Loeriesfontein. The type variety "nigra" occurs to the east of its range, in the Eastern Cape as far east as East London.
Within this range, it typically grows in very well-drained sandy soil, usually under a bush or rocks which serve as partial protection from the sun.
Haworthia is a large genus of small succulent plants endemic to Southern Africa (Mozambique, Namibia, Lesotho, Eswatini and South Africa).
Haworthiopsis fasciata, formerly Haworthia fasciata, is a species of succulent plant from the Eastern Cape Province, South Africa. The species is rare in cultivation; most plants that are labelled as H. fasciata are actually Haworthiopsis attenuata.
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.
Haworthiopsis reinwardtii, formerly Haworthia reinwardtii, is a species of succulent flowering plant in the family Asphodelaceae, native to the Eastern Cape Province of South Africa. It is one of the species of Haworthiopsis that is commonly cultivated as an ornamental.
Haworthiopsis tessellata, formerly Haworthia tessellata, is a species of the genus Haworthiopsis belonging to the family Asphodelaceae. It has been considered a subspecies of its close relative, Haworthiopsis venosa.
Haworthiopsis venosa, formerly Haworthia venosa, known in Afrikaans as venstertjie, is a species of flowering plant in the genus Haworthiopsis belonging to the family Asphodelaceae, native to Namibia and South Africa.
Haworthiopsis attenuata, formerly Haworthia attenuata, commonly known as zebra haworthia, is a small species of succulent plant from the Eastern Cape Province, South Africa. As an ornamental, it is one of the most commonly cultivated of the Haworthiopsis species.
Tulista is a small genus of succulent plants endemic to the Cape Provinces of South Africa. They were formerly included within the genus Haworthia.
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.
Haworthiopsis pungens, formerly Haworthia pungens, is a species of flowering succulent plant from the Eastern Cape Province, South Africa.
Haworthia bayeri is a species of the genus Haworthia in the family Asphodelaceae, endemic to the southern Cape Provinces in South Africa.
Haworthiopsis scabra, formerly Haworthia scabra, is a species of flowering succulent plant from arid regions of the Western and Eastern Cape Provinces, South Africa.
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.
Haworthiopsis glauca, formerly Haworthia glauca, is a species of flowering succulent plant from the Eastern Cape Province, South Africa.
Haworthiopsis viscosa, formerly Haworthia viscosa, is a species of flowering succulent plant from the Western and Eastern Cape Provinces, South Africa.
Tulista pumila ("Vratjiesaalwee") is a species of Tulista 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.
Tulista marginata is a species of Tulista succulent plant, from the Western Cape, South Africa.
Tulista minor is a species of succulent plant, from the far south of the Western Cape, South Africa.
Haworthiopsis is a genus of succulent plants in the subfamily Asphodeloideae. The genus was previously included in Haworthia. Species in the genus are typically short perennial plants, with leaves often arranged in a rosette and frequently having raised white markings. The two-lipped flowers are borne on a tall stalk and are small – less than 17 mm (0.7 in) long – and pale in colour. Many species are cultivated as house plants or by succulent enthusiasts.
