[Mycology] Re: ID on edible fungus

Mycos mycos at shaw.ca
Sun Sep 3 00:32:46 EST 2006


Yes. I'll second the Pleurotus ID. I have grown them myself and have 
seen very similar specimens to this.

Gary Williams


Rex Bartlett wrote:
> It is definitely not an Agaricus of any type. With  the photos not 
> showing much in the way of macro features, I will say that they are 
> Pleurotis eryngii.
> 
>                  You can check out wikipedia for further information on 
> this cultivated and in my opinion, rather tasteless species.
>        
> *       
> *       
> 
> 
> 
> 
> 
> 
> bae at cs.toronto.no-uce.edu wrote:
>> In article <dirhf297c076bo1pvo506g1qel7qb1rsus at 4ax.com>,
>> Richard Wright  <richwrigREMOVE at tig.com.au> wrote:
>>   
>>> The fungus illustrated at
>>>
>>> http://www.box.net/public/static/x3cz7z1cji.jpg
>>>
>>> is sold at a local Sydney vegetable market.
>>>
>>> Can anybody put a name to the fungus please? 
>>>
>>> The seller says the cap never gets much bigger than shown.
>>>     
>>
>> It's definitely a mushroom (Basidiomycete).
>>
>> How much does the seller know about the origin?  What does he call it
>> in English or other language? Is it collected from the wild or
>> cultivated?
>>
>> I'm no expert on mushrooms, but the decurrent gills make me doubt that
>> it's the commonly cultivated species Agaricus campestris, although the
>> unusual small capped form makes it hard to tell.  There are at least a
>> dozen other species of mushroom in common cultivation, but to my
>> limited knowledge, it doesn't look any more like the others. Pleurotus
>> spp have decurrent gills, but they also have asymmetic caps with edges
>> that turn up.
>>
>> As for the small cap form, this could either be a mutation in a
>> cultivated species, or due to manipulation of the growing conditions
>> (temperature, humidity, light exposure, etc.)
>>
>> Mushrooms are often identified by the gills and spores.  If you could
>> keep some of these under humid conditions and let them mature further,
>> a photo of the mature gills and a spore print would help the more
>> knowledgable identify it.  To make a spore print, put a mature cap gill
>> side down on a piece of white paper for several hours.  The spores will
>> fall onto the paper in a characteristic pattern, and both pattern and
>> color are used in identification.
>>
>> (I wonder if it could be some kind of sterile mutant that doesn't form
>> spores.  IIRC, airborne spores are a problem in mushroom production
>> facilities, causing repiratory troubles and allergies in the workers.
>> So even though the cap is the more desirable part of the mushroom for
>> consumers, there could be a commercial role for such a strain.)
>>
>> I'm cross posting this to bionet.mycology, where some more knowledgable
>> people may see it.  Fungi were kicked out of the plant kingdom a long
>> time ago, and DNA studies have shown that they're somewhat more related
>> to animals than to plants.
>>
>>
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>>   
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-- 

Gary Williams


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