• Bishop’s cap cactus
Scientific classification
Kingdom:Plantae
(unranked):Angiosperms
(unranked):Eudicots
(unranked):Core eudicots
Order:Caryophyllales
Family:Cactaceae
Genus:Astrophytum
Species:A. myriostigma
From my collection
via Flickr https://flic.kr/p/2k37iW7