Poinsettias (6/11)

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A sample of the detail visibile in my "Poinsettia inflorescence extreme closeup".  To see the full image or purchase a copy, go to that image. <br />
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That picture is a closeup of a poinsettia flower cluster from the side.  Many people confuse the bracts (red leaves) with the actual flowers; they're quite different.   This macro shot shows multiple pseudanthia surrounded by a sea of red bracts (colored leaves associated with a flower; mostly out of focus in this picture).  The flowers themselves are called cyanthia; the green tissue surrounding each flower is an involucre, a cluster of bracts (leaves) fused into a cup-shaped structure that contains multiple male flowers and supposedly one female flower within it, though I see multiple stigma in each involucre.  Emerging from the involucre you can see red filaments supporting yellow anthers on the male flowers, and you can even see some of the pollen grains.  Also emerging from each involucre you can see a number of dark-purple structures supported by short stalks (that are about a tenth of the height of the filaments; I'm not sure what these are - they may be stigmas and styles, but I doubt it)The bright yellow, liquid-filled structures attached to the involucre are nectar glands filled with nectar to attract pollinators.
A sample of the detail visibile in my "Poinsettia inflorescence extreme closeup". To see the full image or purchase a copy, go to that image.

That picture is a closeup of a poinsettia flower cluster from the side. Many people confuse the bracts (red leaves) with the actual flowers; they're quite different. This macro shot shows multiple pseudanthia surrounded by a sea of red bracts (colored leaves associated with a flower; mostly out of focus in this picture). The...
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Keywords:
  • 60mm efs
  • Euphorbia pulcherrima
  • OCC
  • Poinsettia
  • anther
  • blend
  • botany
  • bract
  • closeup
  • cyanthia
  • flower
  • green
  • horticulture
  • involucre
  • involucrum
  • macro
  • nectar gland
  • plant
  • red
  • yellow

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