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.
Naming and taxonomy.
The genus name "Haworthiopsis" means "like "Haworthia"", which honors the British botanist Adrian Hardy Haworth (1767–1833), while the species epithet "venosa" means "veined".
The species was previously included in "Haworthia" subgenus "Hexangulares". Phylogenetic studies demonstrated that subgenus "Hexangulares" was actually relatively unrelated to other haworthias and so it was moved to the new genus "Haworthiopsis".
Description.
It is a mat-forming succulent evergreen perennial reaching 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 long stems of green-white, tubular flowers in racemes.
Distribution.
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. Here it occurs on rocky slopes.
Cultivation.
In cultivation it requires a minimum temperature of , so is grown under glass in temperate locations.
"Haworthia venosa" subsp. "tesselata" has won the Royal Horticultural Society's Award of Garden Merit.