Hi Could anyone please identify this cactus for my partner? It has suddenly grown a huge extension over the past three weeks and wondered if this was normal Many thanks Mark
Probably a Haworthia - a succulent, (as is a cactus) but not a cactus. Cacti never produce rosettes of pointed leaves.
It is a Haworthia. H's. have triangular leaves, not angular as do Leuchtenbergia (a single species genus).