Dear Rao,

Is it satellite image ?

No Dr. Kumar Patel, I have taken this photograph in Paderu region during our field study. The Lichen is attached to the big plant.

I think it is almost impossible to say something on the basis of this picture

Dr. Juri, 

you are absolutely right 

the mentioned engl. key is absolutely  useless for this tropical lichen from the W. Ghats. Try to start with the "Microlichens" written by the famous indian D.D.Awasthi. TLC needed. Picture unsharp shows no detail. Determination not possible. Thallus looks byssoid? Perhaps then Dichosporidium/Cryptothecia/Stirtonia or something totally different.

Best Felix

The picture is not very clear, but I agree with Dr Felix . It seems to be a bissoide stalk, perhaps a Criptothecia ??? Would have a clearer photo?

Cryptothecia absolute not. Possibly a Dirinaria (margins not byssoid) but a better photo should help.

It could be even an Parmeliaceae. But better pictures and more information is necessary...

For Dirinaria etc look in my Lichenes.net 

Dear Sir,

The photograph is not good enough to identify it even up to genus level. A good close up photograph may be helpful in identification (if chemistry or anatomical study is not required in the group). If possible part of collected specimen may be sent either to Dr. D.K. Upreti/ Dr. Sanjeeva Nayaka (CSIR-NBRI, Lucknow) or to BSI, Allahabad.

This is either Parmeliaceae or Physciaceae because of the distinct lobes. If you collected it, can you make another picture?

I guess it is a Dirinaria

Thank you very much Drs. Felix, Suzana, Dries, Adriano and Robert for your kind responses. Basically I am working on algae and mangroves but not on Lichens. In our department also no body working on Lichens. As an academic/ general interest I am collecting lichen materials. In our region Roccella montagnii hanging from the palm plants. Dipnaria applanata is attached to the palm plants like above photograph. And I strongly believe RG is a good platform to learn new things and exchange views.

Thank you Dr Sinha for your advice, as suggested by you I will send this material to NBRI and BSI further identification Thank you all.

Dear sir,

I am very interested to receive material from species of Arthonia and Arthothelium. If you have the possibility to collect and send it  I should very pleased to study the material.

Adres: Agentschap Plantentuin Meise Nieuwelaan 38 1860 Meise Belgium

I tend to agree with Robert.  But, maybe you can get in touch with the authors of an article on lichen status in Gnat: Lichenology Laboratory, National Botanical Research Institute,

Rana Pratap Marg, Lucknow-226 001, India.

E-mail: [email protected], [email protected]

Sorry but I recomend again: look in the picture collection on http://lichenes.net for images+micro+tlc. It seems not to be used an I could erase it as well.

Thank you Dr Felix, I have an opportunity to go through all your work, I have seen all cross section of the different Lichen species  along with macro  photographs. It is really excellent,  if possible i will prepare and send the micro photograph of the above specimen. Thanks a lot Sir.

Dear Dr Dries, if i will get the Arthonia and Arthothelium in our region, I will certainly send to you. Thank you

I agree with Robert seems like a Physciaceae, but the picture is not very clear, would have another?

I guess this belongs to genus Dirinaria.