“…One of these isidiate, salazinic acid-containing lineages is described here as a new species, X.pedregalensis sp. nov., including populations from xerophytic scrub vegetation in Pedregal de San Angel, Mexico City. X.mexicana s. str. is less isidiate than X.pedregalensis and has salazinic and consalazinic acid, occasionally with norstictic acid; whereas X.pedregalensis contains salazinic and norstictic acids and an unknown substance. …”
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