Crust communities
of the Tamaulipan thornscrub
and the Chihuahuan Desert
Some of these xeric
crust communities are also depicted under clubmosses,
mosses and lichens
and liverworts. The crust in the
first image below, occurring with Lophophora williamsii var. echinata
and Euphorbia candelilla, appears to involve all three and
algae. Algae is clearly visible in the second image; as are liverworts. |
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