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Geastrum saccatum

Geastrum saccatum
Photo Information
Copyright: Felipe Mateo and Cristina (extramundi) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1880 W: 338 N: 4268] (13178)
Genre: Fungi
Medium: Color
Date Taken: 2006-11-01
Categories: Fungi
Camera: Canon EOS 350D, Canon EF-S 60mm f/2.8 Macro, Digital ISO 100
Exposure: f/11, 2 seconds
Details: Tripod: Yes
Photo Version: Original Version
Theme(s): Setas de Galicia - Mushrooms from Galicia II [view contributor(s)]
Date Submitted: 2006-12-26 15:16
Viewed: 5681
Favorites: 1 [view]
Points: 38
[Note Guidelines] Photographer's Note
Geastrum saccatum

Earthstars belong to a group of fungi called Gasteromycetes, or "stomach fungi". Their fruiting bodies are a stomach-shaped sac filled with dry spores. They are related to puffballs.

Young, closed earthstars are onion-shaped. Their peridium (skin) is made up of three layers. The layers allow the earthstar to do something no other fungus can do. Earthstars can move!

When it rains, the outer two layers of the peridium split and uncurl, forming a "star" with 4 to 12 rays. The inner layer of the peridium remains a closed sac. The rays spread with enough force to push aside leaves, raising the spore-filled sac above surrounding debris. Sometimes the rays even lift the earthstar high enough to break the connection to the parent mycelium. The rays close when they dry, and the sac lowers.

Some sacs release their spores when the tender inside peridium wears away. Other sacs toughen and form an opening at the top. When a raindrop strikes these sacs, it pushes in the tough wall, puffing spores out of the opening. After the spores are dispersed the sac breaks down, leaving only fragments attached to the rays. In these older specimens, the star-like rays remain open.

I found this info HERE.

I already posted info on this one HERE.

I also posted a four stage developement of a similar specie HERE and a large post HERE

Hope you like!

F:11 - 2 sec. - Manual exposure - Minitripod

jmp, RAP, fyapici, manyee, saeedabbasi, TAZ, horia, sandpiper2, Alex99, uleko, Juyona, peter_stoeckl has marked this note useful
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Critiques [Translate]

Rozando la perfección.

  • Great 
  • jmp Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1659 W: 95 N: 2273] (8415)
  • [2006-12-26 15:44]

Hola Felipe y Cristina.
¡Qué bonita seta de estómago! Cada ejemplar en una fase distinta forman un documento completísimo para los neótifos en micología. En gusta mucho la geometría, el color y la luz tan homogénea.
Una bella imagen!
Saludos para ambos, José M.

  • Great 
  • RAP Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2524 W: 345 N: 2373] (7405)
  • [2006-12-26 16:49]

Otra sorpresa que encuentro dentro de este reino tan maravilloso Felipe... a pesar de tu publicación allá por el 2004 de algo similar (gracias por el link) no recordaba una publicación de esta especie.
Excelente presentación con ambas etapas del desarrollo del hongo, mostrando buenos detalles de los mismos.
Me gusta el punto de vista captado y el encuadre sobre un fondo bien contrastante.
Nuevamente felicidades para toda la familia... Ricardo

Hola Felipe y Cristina,
Preciosa la toma, con gran nitidez donde se aprecian muy bien las texturas. Mira que es difícil encontrarlos y además es ese estadio de vida tan lozano, enhorabuena. Un cordial saludo

Hola Felipe,
What an interesting mushroom, like a flower! It doesn't need any word to critize, just it had to say: PERFECT! Great job amigo mio.
Un cordial saludo desde Turquie.

  • Great 
  • arfer Gold Star Critiquer [C: 2731 W: 0 N: 0] (0)
  • [2006-12-26 23:17]

Hello Felipe

A lovely presentation of this fungi.I like how you captured one open and one still closed to show the stages of development.Nicely composed with well saturated natural colours.Good DOF and POV.The shot is well focused with good lighting.TFS


fantastic pic, didn't know there were white species, TFS Ori

  • Great 
  • manyee Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3089 W: 230 N: 6774] (23770)
  • [2006-12-27 1:30]

Very interesting fungi, Felipe and Cristina.
I really like the composition.
The white earthstars stand out very well against the dark BG.
The exposure is perfect, and so is the focus.
I can almost feel the texture of these odd growths.
TFS. ; )

Hi Felipe ,
nice shot. well compo.
excellent exposed.

  • Great 
  • TAZ Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2241 W: 47 N: 3167] (10926)
  • [2006-12-27 4:07]

Hello my friend,
The mushroom festival continue again ;-) I saw only one time Earthstar, impressive species...
The +++ : subject, sharpness, exposure, forest background, colors, note...
The - : I wasn't with you ;-)
Bravo Master Felipe

  • Great 
  • horia Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2158 W: 224 N: 4749] (16656)
  • [2006-12-27 5:00]

Hi Filipe and Cristina

What a magnificent capture! Both opened and closed one near the onther! Great work!
The sharpness of the details here is simplt impeccable and the POV excellent. I also like the strong contrast with the BG (soil) and the lovely textures on both the fungi.
Charming presentation and beautiful composition.
Cheers and TFS

Excellent pair of earthstars Felipe.
Well composed, great exposure, good texture
Good sharpness and composition.

Have a great New Year

Hello Felipe,

Excllent work, great colors bg POV DOF perfect details very crisp, nicly composed and capture photo, nice work and congrats

TFS Kyle

  • Great 
  • Alex99 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4072 W: 133 N: 7096] (23735)
  • [2006-12-27 11:44]

Hi Felipe.
Sweet couple in different state pictured. Very impressive POV. Great details and reflection of the fungi texture. Amazing combination light colour tones of fungi and dark tones of BG. Your shot is perfect composed. Excellent job and TFS.

  • Great 
  • uleko Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3396 W: 172 N: 3310] (10940)
  • [2006-12-27 11:50]

Hello Felipe and Cristina,
Brilliant and fascinating shot of this fungus.
Excellent composition showing fine details and colours. Excellent information too, as always!
TFS and best wishes, Ulla

  • Great 
  • Juyona Gold Star Critiquer/Silver Workshop Editor [C: 2232 W: 10 N: 2971] (16891)
  • [2006-12-28 4:52]

Hola amigos, por medio de los enlaces que realizan en casi todos sus trabajos, se puede entender muchos más el habitat, formas, colores... de las distintos trabajos de vds, realizan. Mi reconocimiento y admiración, un mundo que me era desconocido por completo. Un saludo, En lo técnico, genial.

  • Great 
  • carmia Gold Star Critiquer/Gold Note Writer [C: 231 W: 4 N: 144] (2240)
  • [2006-12-29 12:54]

Hola! preciosa macro, el mundo de las setas me apasiona, y gracias a tus magnificas fotografias estoy aprendiendo mucho. Saludos.

Hello Felipe,
phantastically shaped fungi, very clearly presented with beautiful natural colours. Thank you!
Best regards,

Crisp clear shot. Very nices tones. And perfect mastering of the whites.

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