Pleurocybella porrigens (Pers) Singer (1947) (Syn: Agaricus porrigens Pers.  Observ. mycol. (Lipsiae) 1: 54 (1796) …; Calathinus porrigens (Pers.) Quél., 1886; Dendrosarcus porrigens (Pers.) Kuntze, 1898; Nothopanus porrigens (Pers.) Singer  Beih. Sydowia 7: 19 (1973); Phyllotus porrigens (Pers.) P. Karst. Bidr. Känn. Finl. Nat. Folk 32: 92 (1879); Pleurotellus porrigens (Pers.) Kühner & Romagn. Fl. Analyt. Champ. Supér. (Paris): 74 (1953); Pleurotus albolanatus Peck, in Kauffman   Publications Mich. geol. biol. Surv., Biol. Ser. 5 26: 672 (1918); Pleurotus porrigens (Pers.) P. Kumm. Führ. Pilzk. (Zwickau): 104 (1871));
Angel’s wings; 

Pleurocybella porrigens is a species of fungus in the Marasmiaceae family. The species is widespread in temperate forests of the Northern Hemisphere.[2] P. porrigens, known as the angel wing, is a white-rot wood-decay fungus on conifer wood, particularly hemlock (genus Tsuga).[3] The flesh is thin and fragile compared to the oyster mushrooms (Pleurotus ssp.).

Pleurocybella porrigens has historically been generally regarded as edible[3][4] but this has been brought into question by recent deaths apparently associated with P. porrigens consumption.
Synonyms for Pleurocybella porrigens include Pleurotus porrigens, Phyllotus porrigens, Dendrosarcus porrigens, Pleurotellus porrigens, and Nothopanus porrigens.
Although P. porrigens is generally regarded as edible,[3][4] as of 2011, it has been implicated in two documented outbreaks involving fatal encephalopathy. Both incidents were in Japan, and most victims had pre-existing kidney disorders.[5][6][7]
The mechanism of action for the toxicity of P. porrigens has not been definitively established,[5] but several possibilities have been suggested. It has been demonstrated that P. porrigens contains an unusual unstable amino acid which is toxic to the brain cells of rats in cell culture studies,[5][9] but it has not yet been possible to definitively determine that this was the cause of the fatal encephalopathies.[5] Other mechanisms have been suggested for P. porrigens’s apparent toxicity, including the possibility that cyanide levels in P. porrigens may be high enough to be toxic.[10]
(From Wikipedia on 2.8.13)




Thattekad Mushroom ID Request : Attachments (4).  4 posts by 3 authors.
Thattekad bio-diversity was really impressive. We found some amazing mushrooms. Would really appreciate ID confirmation of these images.

Mushroom1ID-closeup2.jpg- Coltricia cinnamomea .Mushroom2IDb-Thattekad.jpg & Mushroom2ID-real-colorThat.jpg- Geopyxis carbonaria (or something close)

Mushroom4-ID-Thattekad.jpg- Pleurocybella porrigens


3 pictures for you : Attachments (3). 7 posts by 4 authors.
could someone identify the mushrooms above please?

The white colour Mushroom: Pleurocybella porrigens Synonyms Phyllotus porrigens, Nothopanus porrigens, Pleurotellus porrigens, Pleurotus porrigens. Family Tricholomataceae or Pleurotaceae 


Wild at Namdhapa near Miao, Arunachal Pradesh in 3rd week of August’10.   

This could be Crepidotus appalanatus.

apologies for the wrong posting. On second thought, this should be Pleurotus ostreatus.

Pleurotus porrigens 

currently the accepted name for this should be Pleurocybella porrigens.