valuelessness: having none of the properties that endow something with value
worthlessness: having no qualities that would render it valuable or useful
chlorophyta: large division of chiefly freshwater eukaryotic algae that possess chlorophyll a and b, store food as starch, and cellulose cell walls; classes Chlorophyceae, Ulvophyceae, and Charophyceae; obviously ancestral to land plants