10-15cm Agave macroacantha mediopicta

This name breaks down as:

• Agave macroacantha: The botanical name for the species (八荒殿).

• 'Yellow Center': Describes the variegation pattern, where the center of the leaf is yellow.

• 'Variegata': A standard horticultural term indicating that the plant is a variegated cultivar.

This is the most accurate and descriptive way to refer to this specific variegated cultivar in English.