#calyx  the sepals of a flower collectively forming the outer floral envelope or layer of the perianth enclosing a developing bud; usually green
  supertype:  sepal  one of the green parts that form the calyx of a flower
  part:  sepal
  part of:  perianth
  subtype:  hull.calyx  persistent enlarged calyx at base of e.g. a strawberry or raspberry
  subtype:  pappus  calyx composed of scales or bristles or featherlike hairs in plants of the Compositae such as thistles and dandelions
     subtype:  thistledown  pappus of a thistle consisting of silky featherlike hairs attached to the seedlike fruit of a thistle

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