Opuntia argentiana
Native range: South America
Known names: Brasiliopuntia argentina
Hardiness: Best to keep above freezing.
Mature Size: CaAaaaAan become a tall tree.
Light: Best in full sun.
Water: Water once soil is dry, way less water during winter. 
Soil: Succulent mix, fast-draining
Dormancy Period: N/A
Pet-Safe: No
Plant Size: 2.5" pot
 
This very unique prickly pear is almost paper thin! (Well maybe about 5 sheets of paper thin.). Yellow flowers in late spring.