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|Distribution:||Africa: South Africa: Western Cape:|
Haworthia joubertii is a robust relative of Haworthia arachnoidea that is found in the Great Karoo north of the Swartberg in the vicinity of Vleiland.
The aggregate Arachnoidea is rather variable and widely spread especially in the Little Karoo but extents into the Great Karoo north of the Swartberg and eastwards to Jansenville and Klipplaat.
The features of these plants are not constant with reference to leaf shape, hairs on the leaves and translucence. Especially the latter characteristic leads to much confusion and can easily cause the observer to associate plants with Aggregates like decipiens whereas a number really are closer to Haworthia arachnoidea.
Although Haworthia joubertii could be regarded as just a form of Haworthia arachnoidea it may just be proper to accept the species name as it can be distinguished from the more south easterly Haworthia scabrispina (also Arachnoidea). There are however other localities that have plants more closely resembling Haworthia joubertii although some are well geographically separated (e.g. plants from between Oudtshoorn and Uniondale). For the sake of communication these should rather have separate names as they likely have no immediate direct lineage to Haworthia joubertii.
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