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pink birchrussula


pink birchrussula
Photo Information
Copyright: bob cat (bobcat08) Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 365 W: 19 N: 361] (1431)
Genre: Fungi
Medium: Color
Date Taken: 2007-10-15
Categories: Fungi
Camera: Canon G5
Exposure: f/4, 1/25 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2008-04-05 6:07
Viewed: 7137
Points: 42
[Note Guidelines] Photographer's Note [Dutch]
Russula betularum

This mushroom is the pink birchrussula. They like to grow in swampy birch forest between the Sphagnum (peat moss) Under this conditions I found this beautiful mushroom in the Vlietlanden, nearby Vlaardingen in the SW part of the Netherlands. This is the area of Nature Monuments. This is of the layer peat areas which have not settled. There is never drainage works have taken place.

Experts believe this is The Sickener (Russula emetica). The story continues. I hope you like this beautiful mushroom

The uncommon European subspecies R. emetica longipes is distinguished by its longer stalk and ochre-coloured gills. The paler European mushroom Russula betularum of coniferous forests and moorland is sometimes considered a subspecies.

More info about Russula from “Wikipedia, the free encyclopedia”

The Sickener (R. emetica)
Scientific classification
Kingdom: Fungi
Subkingdom: Dikarya
Phylum: Basidiomycota
Subphylum: Agaricomycotina
Class: Agaricomycetes
Order: Russulales
Family: Russulaceae
Genus: Russula
Pers. 1797

Diversity
c.700 species

Around 750 worldwide species of mycorrhizal mushrooms compose the genus Russula. They are typically common, fairly large, and brightly colored - making them one of the most recognizable genera among mycologists and mushroom collectors. Their distinguishing characteristics include a white to dark yellow spore print, brittle free white gills, and an absence of partial veil or volva tissue on the stem. Members of the related Lactarius genus have similar characteristics but emit a milky latex when their gills are broken. The genus was described by Christian Hendrik Persoon in 1796.

Identification

Like the genus Lactarius, Russulas have a distinctive flesh consistency, which is also reflected in the appearance of the gills and stipe, and normally makes them immediately recognizable. They have no trace of a veil (no ring, nor patches on the cap). The gills are brittle except in a few cases, and cannot be bent parallel with the cap without breaking. The spore powder varies from white to cream, or even orange.

While it is relatively easy to identify a sample mushroom as belonging to this genus, it is a significant challenge to distinguish member species of Russula. This task often requires microscopic characters, and subtle subjective distinctions, such as the difference between a mild to bitter and a mild to acrid flavor. Moreover the exact phylogenetic relationships of these mushrooms have yet to be resolved in the professional mycological community, and may ultimately depend on DNA sequencing analysis.

The Sickener (Russula emetica)

The following characteristics are often important in identifying individual species:
the exact colour of the spore powder (white/cream/ochre),
the taste (mild/bitter/acrid),
colour changes in the flesh,
the distance from the centre to which the cap skin can be pulled off,
cap colour (but this is often very variable within one species),
reaction of the flesh to ferrous sulphate (FeSO4), formalin, alkalis, and other chemicals,
ornamentation of the spores, and
other microscopic characteristics, such as the appearance of the cystidia in various mounting reagents.

Despite the difficulty in positively identifying collected specimens, the possibility to spot the toxic species by their acrid taste makes some of the mild species, such as R. cyanoxantha and R.. vesca, popular edible mushrooms. As far as is known, no species of Russula is deadly poisonous and mild-tasting ones are all edible. Note that this rule applies only to Russulas and not to other types of mushrooms!

Toxicity

The main pattern of toxicity seen among Russula species to date has been gastrointestinal symptoms in those with a bitter taste when eaten raw or undercooked. However, rhabdomyolysis was seen after consumption of R. subnigricans in Taiwan. Several active agents have been isolated; one designated russuphelin A by researchers in Japan.

Species

For more examples, see the List of Russula species. http://en.wikipedia.org/wiki/User:Agaric
Russula cyanoxantha - one of the largest species, with blue to greenish cap, mild taste and white, greasy gills.
Russula emetica - so acrid it can be dried and powdered to make a chilli pepper substitute;
Russula subnigricans - a poisonous mushroom causing rhabdomyolysis in Taiwan.
Russula virescens - an excellent mushroom, easily recognizable by the green and distinctly crackled cap cuticle;
Russula xerampelina - an edible russula that smells and tastes like shrimp or seafood;

See also
Mushroom hunting
Mushroom poisoning

http://www.flickr.com/account

gerbilratz, marhowie, ellis49, extramundi, gracious, Karin, Hormon_Manyer, CeltickRanger, zeca, Jamesp, loot, hester, Maite, LordPotty, valy67 has marked this note useful
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Discussions
ThreadThread Starter Messages Updated
To valy67: merci beaucoupbobcat08 1 01-11 02:03
To Gert-Paassen: dank je welbobcat08 1 11-02 01:22
To juanit: have a nice sunday and thanksbobcat08 1 06-15 01:37
To LordPotty: 25 Celsiusbobcat08 1 05-11 00:20
To Maite: don't try only buy (-:bobcat08 1 04-25 10:45
To hester: thank youbobcat08 1 04-17 02:51
To loot: beautiful mushroombobcat08 1 04-17 02:45
To angybone: try and errorbobcat08 1 04-11 23:21
To Jamesp: thank youbobcat08 1 04-11 23:18
To zeca: not easy to findbobcat08 1 04-11 23:15
To claudine: thank youbobcat08 1 04-11 11:47
To CeltickRanger: thanksbobcat08 1 04-08 22:58
To arfer: DOF could be betterbobcat08 1 04-08 00:49
To Hormon_Manyer: nice experimentbobcat08 2 04-07 14:36
To pablominto: thank youbobcat08 1 04-06 11:30
To Karin: thanksbobcat08 1 04-06 11:28
To extramundi: saludo et graciasbobcat08 1 04-05 11:36
To gracious: thanksbobcat08 1 04-05 11:33
To ellis49: nice weekend and thanksbobcat08 2 04-05 08:10
To marhowie: thats fastbobcat08 1 04-05 06:20
To gerbilratz: thanksbobcat08 1 04-05 06:18
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Critiques [Translate]

very good POV...excellent colouration with fine clear details. The focus is also very good, nice work!! TFS regards h

Nice job on this Bob,
The exposure and color look great!
I like the POV, good details and comp also :)
Howard

Hi Bob,
this looks really nice with lovely colours and fine details.
Well composed and I like the low POV and nice DOF-
Well done.

It is a nice russula, with beaitiful POV and great lighting.
Thanks and regards, Felipe.

Hello Bob,
Delighted to see your posting once again! Bob!
how are are getting on!
This is a real good one with the perfect pov in beautiful colour and details on the mushroom!
many thanks for the sharing
wishing you well always
Tony

  • Great 
  • Karin Gold Star Critiquer/Gold Note Writer [C: 418 W: 5 N: 268] (2089)
  • [2008-04-06 9:15]
  • [+]

Hi Bob,
I like the color and light on the mushroom and the nice green of the moss.
good composition.
well done and TFS

Hello Bob,
The colours are so beautiful!
The mushroom itself of course, but also the shades of green in the surroundings...
Lovely light on the main subject, great details in this well composed presentation!
Greetings,
Pablo -

Hi Bob,
Very nice photo with interesting POV, good colors and perfect DOF. Russula is a very difficult genus to ID, but an experiment helps if You'd like to eat it: take a very small piece of lamella into Your mouth (before cooking), and if it's bitter, the Russula's poisonous. But this "game" only works with Russulas, so be careful.
Tfs the nice image and the informative note, too. Greetings from Hungary, László

  • Great 
  • arfer Gold Star Critiquer [C: 2731 W: 0 N: 0] (0)
  • [2008-04-07 22:11]
  • [+]

Hello Bob

A wonderful POV ,the cap detail is excellent.
Lovely use of the natural lighting,the colours are very good.
Well composed in the frame.
TFS

Rob

hello Bob

great shot of this Mushroom, it is your POV that i love most
chowing us the underparts of that place and giving excellent DOF,
excellent sharpness and details of the mushroom and foreground,

TFS

Asbed

Hi Bob,
I like this composition, POV and natural colors and exposure. This is the point of view an insect must have... :) Your notes are also interesting. Well seen and well done! Thanks!
Claudine

  • Great 
  • zeca Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 373 W: 14 N: 539] (2887)
  • [2008-04-11 14:12]
  • [+]

Very nice capture, Bob. Its not easy to take this kind of pictures due to the lights, since the mushrooms prefer this places. The sharpness and the colours are nice!
Regards,
Zeca

  • Great 
  • Jamesp Gold Star Critiquer/Gold Note Writer [C: 1369 W: 9 N: 6334] (18906)
  • [2008-04-11 14:14]
  • [+]

Hi Bob

A great shot - good composition and POV with good colour and superb detail. Well observed and captured.

James

Wonderful low angle making for a wonderful point of view---you still managed excellent lighting in what would seem to be darker conditions. Good stuff!

  • Great 
  • loot Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5524 W: 722 N: 4163] (11276)
  • [2008-04-16 8:09]
  • [+]

Hi Bob

This is neat man. The pink tones reflecting through the gills of this mushroom stand in beautiful contrast to the brilliant green of the peat moss on the surface. The details are magnificent and the lighting was perfectly balanced.

Very interesting notes as well, especially the last paragraph describing some more Russula species. Most are edible, but one is poisonous and one species even smells and tastes like shrimp or seafood. Wow.

Well done and TFS.
Regards
Loot

  • Great 
  • hester Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 1515 W: 18 N: 3165] (11638)
  • [2008-04-16 10:16]
  • [+]

Hi Bob

Stunning POV on this lovely funghi. The delicate pink tones look wonderful against the lush greens. Excellent exposure on the pale flesh and nicely composed

TFS

Karan

  • Great 
  • Maite Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 998 W: 65 N: 1270] (5199)
  • [2008-04-25 8:13]
  • [+]

Hello Bob
What a beautiful thing this mushroom!! I like a lot the POV from which you captured it, showing its filaments. Magnificent sharpness, DOF and composition, and very good and interesting note. I don't know if I should dare to mild-taste any of these mushroom anyway.
Congratulations and TFS.
Greetings
Maite

This is a beautiful capture of the Pink Russula Bob.
We have lots of these in our Beech forests at the moment.
I see your photo was taken back in October.
It will be summer over there now ... we are just getting into winter now.
Cheers
Steve

Hello Bob

Wonderful capture with a great POV.The colours and detail are excellent.TFS

Best wishes

Anita & Mike

Hallo Bob,

Pak deze er maar even bij, volgens mij heb ik deze soort nog niet maar ze zijn ook moeilijk t determineren.
Goed scgerpe foto maar vind de dof eveel door de onrustige achtergrond.
Ook de kleuren zijn mooi en natuurlijk.

Gert

Hello Bob !
This is a very nice picture of this mushroom, it's great to see the underpart of the cap. It is also nice to see the natural environment in which you have found it, with the moss and greenery, and you also made great use of the beautiful light. Excellent details. Very well done !
Valerie.

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