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Paxilus Involutus II


Paxilus Involutus II
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: 2005-11-15
Categories: Fungi
Camera: Sony DSC-F717, Digital ISO 100
Exposure: f/8, 1/4 seconds
Details: Tripod: Yes (Fill) Flash: Yes
Photo Version: Original Version
Theme(s): Mushrooms [Chapter 2], 40-49 Points (Chapter 6), Setas de Galicia - Mushrooms from Galicia II [view contributor(s)]
Date Submitted: 2005-11-20 14:24
Viewed: 7364
Points: 38
[Note Guidelines] Photographer's Note
Paxilus Involutus.

I already made Large Post about this specie recently, but I like the curves on this one, so here it is again.

Paxillus involutus is a very common mycorrhizal fungus, found on the roots of several types of coniferous and broadleaved trees, including alder (Alnus glutinosa), birch (Betula spp.), Sitka spruce (Picea sitchensis), pines (Pinus sylvestris) and Douglas fir (Pseudotsuga menziesii). It is also found in a wide range of habitats, including coal waste heaps, where it grows in association with self-seeded or planted birches. The young fruitbodies have a strongly inrolled margin, giving rise to the common name for this fungus, "Brown Roll-rim". Later, the cap expands to 12 cm or more with a much less conspicuous in-rolled margin and can split in dry conditions.

The fruitbodies of Paxillus involutus are reported to be poisonous, although they have traditionally been eaten by many people in eastern Europe. P. involutus has recently been discovered to cause Immune Haemolytic Anaemia, the onset of which can appear after many years of consuming this fungus and can be fatal. It seems likely that the onset of Immune Haemolytic Anaemia is related to repeated long-term exposure to the toxin, after years of eating the fungus with little or no ill effect.

The mycorrhizas of Paxillus are quite distinctive compared with the mycorrhizas of some other fungi. They are long and tortuous, with irregularly spaced branches usually arising along one main axis. The branches are often covered with white hyphae, but these hyphae can easily be lost by bruising. Microscopic features of the mycorrhizal surface and the fungal sheath surrounding the roots are used to confirm identification.

Although Paxillus involutus is only one of many mycorrhizal fungi, it has special significance because it has been found on coniferous and deciduous trees of all ages and in a wide range of habitats, including potentially adverse environments such as mine spoil heaps. In its wide range of tolerance of adverse environments, P. involutus is similar to Pisolithus tinctorius, a puffball-like fungus known to be mycorrhizal with pines in the USA, and often used in afforestation programmes in poor or sandy soils.

I found this info HERE.

F8 - 1/4 seg. - ISO100 - Manual mode - Minitripod - Diffuse flash.

LordPotty, shirgold, glazzaro, cecilia, Fisher, alejandroguzman, hummingbird24, Janice, Athila, dew77, cedryk, TAZ, Circe, Dave, klemmg, marhowie has marked this note useful
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ThreadThread Starter Messages Updated
To LordPotty: No I have not, but Greg did.extramundi 1 11-20 15:39
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Critiques [Translate]

  • Great 
  • marjan Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 459 W: 14 N: 366] (2685)
  • [2005-11-20 14:35]
  • [3]

Felipe, Excelent photo. Cleare bright and good POV. We can see al details. Fantastic explanation about it. thanks for sharing this buty with us.

  • Great 
  • samos Gold Star Critiquer [C: 79 W: 4 N: 2] (39)
  • [2005-11-20 15:02]
  • [2]

Excellent close-up Felipe
Great composition and nice strong color
very good backlighting regards Stavros

Definitely worth posting this wonderful shot Felipe.
Beautiful composition.Excellent exposure and detail.
Great colour and DOF.
Just perfect,as usual.
Cheers, Steve
ps...hope you haven't been eating these ones ;)

Awesome lighting under the umbrella, the colors are very nice in this well composed image. Paul :)

Hola Felipe,
Great shot with extremely good details
POV and DOF are just great.
Note is excellent as well

TFS - Shir.

Excellent detail and the overll comp is pleasing.

Greg

Beautiful colours and nicely presented.

  • Great 
  • Fisher Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1540 W: 309 N: 2234] (8915)
  • [2005-11-20 18:01]

Hi Felipe,

Beautiful capture and well don eon the composition and details.
Excellent work.

Mike

Hola Felipe:

La perspectiva de esta foto la hace ver enorme... definitivamente un buen angulo. Y ni que hablar de los colores, un excelente DOF.

Abrazos
Alejandro

Wow, Felipe, couldn't you get it a little sharper?

Just kidding ;-)) this is an amazing capture.

Details are wonderful and sharp; colors, POV, DOF, and lighting are perfect.

Great job, thank you for sharing this lovely composition with us.

  • Great 
  • Janice Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3277 W: 148 N: 6163] (18832)
  • [2005-11-20 21:44]

I don't think I'll eat this one Felipe and Cristina, thank you. What a beautiful colour and perfect patterns it has, and the shape reminds me of a trumpet (well, sort of!). And very interesting notes too. Thank you...

  • Great 
  • Athila Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 335 W: 239 N: 493] (1982)
  • [2005-11-20 23:03]

STRANGE MUSHROOM

Hi Felipe! this is a very good picture of a strange mushroom. It is sharp and well exposed. Tight croopping helps to direct attention on the mushroom since BG is quite busy. Picture has excellents shadow and hightlight details all over.
Great shot and TFS.

Very nice, atlas type shot of this fungus. Unusual POV, great DOF and POV! Excellent note as well!

Complementing your note - in Poland this species is very common and was consumed although not regarded to be very tasty. A great rumour about its being dangerous came in early 1980s and since that time it is forbidden to pick up and to sell.
Greetings!
Michal

  • Great 
  • dew77 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4432 W: 248 N: 4028] (13270)
  • [2005-11-21 4:24]

Hello Felipe!
Excellent close up.Details are crisp clear and razorsharp.I liked colors,POV,framing and lighting a lot.TFS....:-)

Great light on this one Felipe. Beautiful warm colours and the curves are great. An excellent shot.

  • Great 
  • honza Gold Star Critiquer/Gold Note Writer [C: 533 W: 0 N: 720] (4197)
  • [2005-11-21 5:36]

Superb shot of the common but interesting mushroom. Fantastic sharpness and colors.

  • Great 
  • TAZ Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2241 W: 47 N: 3167] (10926)
  • [2005-11-21 7:44]

What a beautiful and interesting species that you have very well captured ! Good low POV. I am jalous because I never see this mushroom... Congratulations Felipe and thanks for sharing.

  • Great 
  • Circe Gold Star Critiquer/Silver Note Writer [C: 54 W: 4 N: 22] (86)
  • [2005-11-21 23:15]

Caramba, excelente detalle. Con una foto como esta seguro que no tendre problemas de identificacion. La perspectiva es unica, como todas las vuestras, nos permite incluso ver la corteza del arbol de donde sale el paxilus al fondo.
Una gran nota tambien. Curiosamente yo tb he hablado de las micorrizas, pues he publicado un gymnopilus (creo :))
Un abrazo de circe.

  • Great 
  • Dave Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 503 W: 43 N: 657] (2178)
  • [2005-11-22 12:29]

Excellent Felipe!
Very appealing to the eye, and inspiring to the imagination!
Great job!
Many thanks,
Dave

  •      
  • klemmg Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 302 W: 40 N: 484] (1719)
  • [2005-11-24 0:03]

Hi Felipe/Cristina,
I'm amazed as always how you come up with dramatic shots of fungi, of all things. This one makes me think of a trumpet "fanfare" (hopefully this is an english word too). I mainly like fungi on my dinner plate (not this specific toxic one though). Excellent shot, and interesting note. I had not heard about these possible late-onset consequences before.
Regards,
Gabi

Excellent work..I can not add to the others except to say - Perfect! Thank You on our Thanksgiving Day here in the U.S.

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