Xerophyte

Note

Coryphantha retusaSN|10405]]SN|2315]] is a widespread and variable species that has received an undue number of names. The differences usually concern only the spination, however the colouring, size and density of spines is greatly influenced by the conditions of culture, at lower light levels the spines are less numerous, delicate and white, while with strong solar radiation the spines are stronger with a darker tint. Minor differences can also be found in the colour of flowers sometime with a paler or darker yellow tint, and in the size and shape of tubercles.