lichen

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  The home is surrounded by dunes. Sea oats, lichens and cacti are ground cover.
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  A myrtle oak is surrounded by a lichen ground cover.
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  A variety of lichen and moss are the most common ground cover.
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  Lichens and mosses grown on the scrub pine trucks.
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  The lichens are like puff balls was they absorb water. Under dry conditions, the same lichens flatten and become dry and brittle.
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  Pine branches forms litter the forest floor.
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  Lichen grow in shaded areas of the sand scrub forest.