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Geastrum sp. natural environment


Geastrum sp. natural environment
Photo Information
Copyright: Ungureanu Liviu (Apashu) Silver Star Critiquer/Gold Note Writer [C: 15 W: 0 N: 126] (937)
Genre: Fungi
Medium: Color
Date Taken: 2010-11-14
Categories: Fungi
Exposure: f/7.1, 1/30 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2010-12-17 5:40
Viewed: 3876
Points: 8
[Note Guidelines] Photographer's Note
Geastrum (orthographical variant Geaster) is a genus of mushroom in the family Geastraceae. Many species are known commonly as earthstars.

The name comes from geo meaning earth and aster meaning star.

The name refers to the behavior of the outer peridium. At maturity, the outer layer of the fruiting body splits into segments which turn outward creating a star-like pattern on the ground. The inner peridium is a spore sack. In some species, the outer peridium splits from a middle layer, causing the spore sack to arch off the ground. If the outer peridium opens when wet and closes when dry. It is described as hygroscopic.

In some species, the inner peridium is borne on a stalk or pedicel. The columella is a column-like clump of sterile tissue to be found inside the inner peridium. The network of fertile tissue inside the inner perdium, the capillitium, arises from the columella. The mouth in most species of "earth-stars" is quite prominent, often arising as a small cone at the apex of the inner peridium.

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Critiques [Translate]

  • Great 
  • zetu Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 967 W: 26 N: 3888] (16941)
  • [2010-12-17 6:00]

Salut
Asta parca imi place si mai mult.
Numai bine
Razvan

Hi
Very interesting creature and nice shot.
TFS

Cengiz

You capture a commonly unknown mushroom with great detail. TFS
Samiran Nandy

hello Ungureanu
very good picture with great sharpness and good details
beautiful colours and nice pose
greeting lou

I would not be surprised if this is Astraeus hygrometricus or Hygroscopic Earthstar. TFS

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