| Haworthiopsis venosa | |
|---|---|
 | |
Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Asphodelaceae |
| Subfamily: | Asphodeloideae |
| Tribe: | Aloeae |
| Genus: | Haworthiopsis |
| Species: | H. venosa |
| Binomial name | |
| Haworthiopsis venosa (Lam.) G.D.Rowley[1] | |
| Synonyms[1] | |
| |
Haworthiopsis venosa, formerlyHaworthia venosa, known inAfrikaans asvenstertjie, is aspecies offlowering plant in thegenusHaworthiopsis belonging to thefamilyAsphodelaceae,native to Namibia and South Africa.
The genus nameHaworthiopsis means "likeHaworthia", which honors the British botanistAdrian Hardy Haworth (1767–1833), while the species epithetvenosa means "veined".[2]
The species was previously included inHaworthia subgenusHexangulares.Phylogenetic studies demonstrated that subgenusHexangulares was actually relatively unrelated to other haworthias and so it was moved to the new genusHaworthiopsis.[3][4]
It is a mat-formingsucculentevergreenperennial reaching 8–60 cm (3–24 in) in height. Stemless rosettes of 12–15 fleshy, triangular, lanceolate, dark green leaves show a few pale green lines along the upper surfaces and small teeth along the margins.
In spring (November to December) it bears 15 cm (6 in) long stems of green-white, tubular flowers inracemes.[5]
This species occurs over a large area, from the inland Karoo and Namibia to as far south as the northern part of the Breede River valley.[citation needed] Here it occurs on rocky slopes.
In cultivation it requires a minimum temperature of 10 °C (50 °F), so is grown under glass intemperate locations.[6]
Haworthia venosa subsp.tesselata has won theRoyal Horticultural Society'sAward of Garden Merit.[7]
