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Treatment Improvement Protocols (TIPs) are a series of best-practice manuals for the treatment of substance use and other related disorders. The TIP series is published by the Substance Abuse and Mental Health Services Administration (SAMHSA), an operational division of the U.S. Department of Health and Human Services .
A. haworthii is native to the Canary Islands and northern Africa, but it has been introduced to other areas of similar climate, such as Southern California. [4] In the US, it is suitable to be grown outside in USDA hardiness zones 9-11. [5]
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.
As one of the soft green group of Haworthias it is frequently confused with its relatives (e.g. Haworthia cooperi which shares a similar distribution range, as well as Haworthia mucronata and Haworthia marumiana to the west). A distinctive feature is the soft, "boat-shaped" leaves ("cymbiformis" actually means "boat-shaped").
Haworthiopsis koelmaniorum (synonym Haworthia koelmaniorum) is a succulent plant in the subfamily Asphodeloideae, found in Mpumalanga, one of the Northern Provinces of South Africa. [ 1 ] References
Haworthia maraisii is a species of flowering plant in the family Asphodeloideae, found in the southwest Cape Provinces of South Africa. It has been treated as a variety of either Haworthia magnifica or Haworthia mirabilis , but is accepted as a full species in the World Checklist of Selected Plant Families .
Haworthia nortieri is a species of succulent plant belonging to the genus Haworthia and is classified under the family Asphodelaceae. It is native to Southern Africa, southwest of Northern Cape . [ 1 ]
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.