Mammillaria spinosissima 'Irishman' 

The stem is columnar, usually solitary but sometimes clumping, dark blue-green, up to 1 foot tall, and up to 4 inches in diameter. 

The tubercles are ovate-conical, 4-sided basally, with axils slightly woolly. The spines can grow up 1.6 inches long.

Plant will be well packed for shipment.

Pictures are an example of the plant you will received and may not be the actual plant shipped.

Please note: If you are experiencing cold weather in your area, it is recommended that you purchase a 72 hour heat pad for transportation. I can offer one for $3.5 to you on my store site. Otherwise, your plant might freeze and become damaged.