A very attractive and unusual hybrid from the Aloaceae family with one of the parents being likely Tulista. Tulista pumila x Haworthia "Bev's Wonder" has been proposed.
The plant originates from Bob Kent and its creation is apparently the work of Hummingbirds !
It is uncommon for Tulista to hybridize with other genera so it is a very interesting cross indeed. The plants do not set fruit readily, and if they do it is unknown if the seed is viable.
Steven Hammer referred to the plant as "Rosie the Riveter" and I use the genus name Alona as a partial anagram from the word Aloaceae, keeping in mind that the plant is probably quite lonely. Please correct me if any of the info is wrong and I shall change it.