Turbinicarpus and relational species
|
beguinii |
booleanus |
gielsdorfianus |
|
horripilus |
knuthianus |
laui |
|
lophophoroides |
mandragora |
roseiflorus |
|
saueri |
subterraneus |
viereckii |
|
viereckii var major |
ysabelae |
ysabelae var brevispina |
|
zaragozae |
|
|
comparative study with
