Moss for Rocks and Terrariums

This moss grows well even on alkaline soils, clings to rocks and is very decorative with its small leaves that resemble a fir tree. It has excellent drought resistance, at which point it retracts and its color becomes an intense yellow, while if placed on a constantly moist base it regains vigor and becomes greener.
The species is probably: pseudoscleropodium purum
Portion 10x15 cm