involucre defined in 1951 yearinvolucre - involucre;
involucre - Protective investment; (1) in thalloid liverworts, scale-like upgrowth of thallus over-arching archegonia; (2) in leafy liverworts and in mosses, group of leaves surrounding sexual organs; (3) in many flowering plants, e.g. family Gompositae, group of bracts enveloping young inflorescence.
near involucre in Knolik
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