dear Girish

Yes, it seems an Amanita, however the photos are not to good and lack some important characters. When taking photos of mushrooms to identify them always include one with a transversal cut of the whole fruitbody and an other one showing the lamella, tubes, etc,

Thanks Dear Roberto....!

Hi: it look like Amanita spp,

Thanks 

Dear Oadi

Girish Da,

Please go to the following link, make necessary inputs and follow suggestions in the right panel.

http://www.mycokey.org/agaric1.shtml?language=uk&localLanguage=uk&searchMode=full&atlasmode=false&r=513943.49290058017

Lamella attachment, presence/ absence of volva, colour change, smell, taste etc. are also important for identification of mushrooms.

Best wishes,

P

Thanks Prakash Ji

Girish, I believe also that it is a species of Amanita. In the Mediterranean we have Amanita gracilior, that it closely resembles to the species in your photos. Greetings.

Yes, it it looks like a species of Amanita, but photos are not so fine. Amanitas are having mostly free gills from stipe ,universal veil and volva in stipe region with warts on cap (pileus).

Thanks Vipin Sir

Seems volva is missing. Try to check representatives from genus Lepiota. Greetings

Hello, Girish Gogoi.

To demonstrate that an agaricoid collection belongs to the Amanitaceae, it is necessary to do two things:   (1) Make a transverse section of a gill and observe that the lamella trama is bilateral and divergent and (2) make a thin longitudinal section of the flesh of the stem (not in an area of central pith and not near the external surface) and demonstrate that the tissue is "longitudinally acrophysalidic."  These terms will be found defined on a set of pages of the "Studies in the Amanitaceae" website starting with this page:

http://www.amanitaceae.org?About%20Amanitaceae

Many of the generalizations about macroscopic characters of amanitas in the literature are not true.  The above method is definitive for agaricoid mushrooms.

The above two microcharacters (note that no measurements are required) are the precise way to determine a member of the Amanitaceae.  To separate Amanita and Lepidella within the Amanitaceae, there are many useful characters that are also treated on the same web site.  For example, Amanita gill edges are sterile while Limacella edges are fertile.  This is because of the radically different ontogenies of the organisms in the two genera.  This is also treated in the pages mentioned above.

If the material you photographed is an Amanita, then it is very likely that it belongs to Amanita section Lepidella sensu Bas.  This would require its spores to be amyloid and the margin of its cap to be appendiculate with relatively fine universal veil material and its stipe's base not to be enclosed in a saccate volva. 

Within section Lepidella, the structure of the volva, the pallid colorations, and the rooting bulb on the stem base suggest that the species might belong (you will have to demonstrate this) to Amanita subsection Solitariae. 

It appears from your researchgate page that you are collecting in Assam.  I don't think that any European Amanita name will apply; nor will any name from the Americas. 

I would suggest your reviewing the literature of Colonial times in the Himalayan region.  For species of section Lepidella, the 1969 thesis of the late Dr. Cornelis Bas is a very good place to start.

http://www.amanitaceae.org?Bibliography

  Also the recent extensive work done by the group in Dr. Z. L. Yang's laboratory in Kunming, Yunnan, PRC will be very relevant to your study of the mushroom.

The list of amanitas for India published by R. P. Bhatt et al. [Bhatt, R. P., R. E. Tulloss, K. C. Semwal, V. K. Bhatt, J.-M. Moncalvo and S. L. Stephenson. 2003. Amanitaceae reported from India. A critically annotated checklist. Mycotaxon 88: 249-270.] may be of some use.  However, it is just a beginning and cannot serve to help you with details of determination.

Very best,

Rod Tulloss

Thanks Sir...Your suggestions, reference and links are highly appreciated

Girish 

You are welcome.  For more information concerning the description of amanitas, I suggest that you download a copy of the workbook on Amanita published in 2011 by Tulloss and Rodriguez-Caycedo for a lecture given to the NJMA.  It is available on my researchgate "contributions" tab.

Very best,

RET

Many pages of the www.amanitaceae.org website have a "search" box in the upper left part of the page.  If you would like a list of the Amanitaceae of India that are known to me, you can use the search function with this entry:

INDIA

This will find all species having India listed in the "materials examined" data field of the technical tab (techtab).  The list of pages generated can be highlighted and copied into a spreadsheet or a text.

Very best,

RET

I just noticed a typographical error in the 2011 workbook.

On page 7,

"found no buttons are found them but did not retain them"

should read

"found no buttons or found them but did not retain them".

Very best,

RET

Thanks Sir....!

I shall be kept in contact in future. Thanks you very much again for your valuable suggestions !

I notice that the topic area "Amanita" is followed by only eight persons (the last time I looked).  I suggest that person's following this question might also want to follow the topic "Amanita."  I have submitted "Limacella" as  a possible topic area.

RET

Girish Gogoi,

Can you add the topic "Amanita" to the list of topics for this question?

Very best,

Rod