crustose

英 ['krʌstəʊs] 美 ['krʌstoʊs]

• adj. 长成外壳状的；紧贴在土壤(岩石)的

英英释义

Adjective:

1. (of lichens) having a thin crusty thallus that adheres closely to the surface on which it is growing;

   "crustose lichens"