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The genus Haworthia was long considered problematic, and suspected of being polyphyletic. It was accordingly divided into three different subgenera: Haworthia (the soft, green, leafy, and often retuse species); Hexangulares (the harder, often tubercled species); Robustipedunculares (the four largest, most robust species).
Haworthia is a large genus of small succulent plants endemic to Southern Africa (Mozambique, Namibia, Lesotho, Eswatini and South Africa). [1]Like aloes and gasteria they are members of the subfamily Asphodeloideae and they generally resemble miniature aloes, except in their flowers, which are distinctive in appearance.
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.
It was formerly classed in the genus Haworthia, with the other large species (T. pumila, T. minima and T. marginata) in the "Robustipedunculares" subgenus. Following recent phylogenetic studies, it has been shown that these four species in fact constitute a distinct out-group, separate from other Haworthias.
Haworthiopsis limifolia, formerly Haworthia limifolia, is a species of flowering plant in the genus Haworthiopsis, native to southern Africa and first described in 1910. [ 2 ] [ 3 ] Distribution
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.
In this form, it is similar to other retuse haworthias (e.g. Haworthia retusa, Haworthia bayeri, Haworthia springbokvlakensis, Haworthia pygmaea, Haworthia mirabilis and Haworthia magnifica). A distinctive feature is the convex shape of the leaf faces. The faces appear to bulge upwards, with the leaf tips bent back downwards.
Haworthia herbacea is a species of succulent plant in the genus Haworthia native to the Cape Province of South Africa. [1] Closely related to Haworthia reticulata, [2] it has greenish yellow leaves with small spines. As it matures the leaves get darker green and the white spots raise.