Echinocereus rigidissimus v. rubispinus Caudiciform The flowers are small and

The flowers are small and greenish

Very similar to P

Astrophytum asterias 'Fukuryu' The Japanese Sea Urchin cactus

This cactus is more tropical than most so it likes a bit more moisture than an normal succulent and should be kept above 50 degrees in winter

An interesting small species from Argentina distinctive for its dark gray green to brownish color and nice spines

Echinocereus rigidissimus v. rubispinus Caudiciform The flowers are small andEchinocereus rigidissimus var. rubrispinus Also called E. pectinatus var. rubrispinus. A real "must have" for every cactus collection! The plant has beautiful red spines that cover the stem. It is very common for the spines to be white when young, but as the plant matures it will be consistently pink ot red, so don't worry if yours has white spines when you receive it. The plant is columnar but stays fairly short, usually only a foot or so tall.