Dyckia sp Apiunensis
It grows and very very steep area on the North face of the downtown Apiúna-SC Dom Bosco Hill (in fact a huge rock, a granite monolithic one). We do not managed to get to the flowering plants due to the very steep granitic wall they live on.
We know the flowers are pretty yellow and well opened.
-Apiúna is a very small town by the Itajaí River