pappus

Definitions of pappus
  1. noun
    calyx composed of scales or bristles or featherlike hairs in plants of the Compositae such as thistles and dandelions
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    types:
    thistledown
    pappus of a thistle consisting of silky featherlike hairs attached to the seed-like fruit of a thistle
    type of:
    calyx
    (botany) the whorl of sepals of a flower collectively forming the outer floral envelope or layer of the perianth enclosing and supporting the developing bud; usually green
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