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Layah is not a word. Layia is a type of flower in the western united states, usually white or yellow.
Some endangered plants:~Jack-bean~Beach Layia~Cedro Misionero~Mandrinette~Zamia disodon~Xyris andina~Walker's Manioc~Torreya jackii~Stephensoniella brevipedunculata~Rustia bilsana~Quercus hinckleyi