It is a variable species, and has several subspecies, including the "type" variety Haworthiopsis attenuata var.
attenuata.

Another common variety is Haworthiopsis attenuata var.
radula - Hankey Dwarf Aloe (previously considered a separate species) which has longer, more elongated, scabrid leaves with smaller, more numerous tubercles.
This variation grows up to 6 inches (15 cm) in diameter and up to 6 inches (15 cm) tall.

The form clariperla has its tubercles connected into large white "bands" across the underside of its leaves, and variety britteniana has especially big and separate white tubercles.

The variety H. attenuata var.
glabrata is frequently considered a separate species, H. glabrata.
It is a variable species, and has several subspecies, including the "type" variety Haworthiopsis attenuata var. attenuata.
Another common variety is Haworthiopsis attenuata var. radula - Hankey Dwarf Aloe (previously considered a separate species) which has longer, more elongated, scabrid leaves with smaller, more numerous tubercles. This variation grows up to 6 inches (15 cm) in diameter and up to 6 inches (15 cm) tall.
The form clariperla has its tubercles connected into large white "bands" across the underside of its leaves, and variety britteniana has especially big and separate white tubercles.
The variety H. attenuata var. glabrata is frequently considered a separate species, H. glabrata.
Haworthiopsis attenuata