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

"crustose lichens"

Crustose Coralline Algae: A Re-evaluation in the Geological Sciences
Crustose Coralline Algae-Re-Evaluation in Geological Sciences. Geol Soc Am Bull
Crustose lichens as indicators of forest continuity in boreal coniferous forests
Crustose Roccellaceae in The Galapagos Islands, With The New Species Schismatomma Spierii
Decreased abundance of crustose coralline algae due to ocean acidification
The sorediate and isidiate, corticolous, crustose lichens in Norway
Metamorphosis of broadcast spawning corals in response to bacteria isolated from crustose algae
Environmental factors associated with the spatial distribution of crustose coralline algae on the Great Barrier Reef
The influence of tree age and microhabitat quality on the occurrence of crustose lichens associated with old oaks
Recruitment and metamorphosis of Haliotis larvae induced by molecules uniquely available at the surfaces of crustose red algae