Thelypteris parasitica SN17420b

[Ponnutheerthagiri Santhan]

Thelypteris parasitica (L.) Tardieu (=Christella parasitica)Wild fern from Western Ghats Tamilnadu.

[J.M. Garg]

Thanks, Santhan ji

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With regards,
J.M.Garg

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[J.M. Garg]

Thanks a lot, Chris ji.

---------- Forwarded message ---------
From: Chris Fraser-Jenkins
Date: Fri, 17 Apr 2020 at 14:19
Subject: Re: [efloraofindia:348261] Thelypteris parasitica SN17420b
To: J.M. Garg <jmg...@gmail.com>

I think it is much more likely to be T. (sect. Christella) denatata - but the photo is inadequate to show which, but it is not typical for T. parasitica at all..

1. I need to know if the rhizome was rather thinnish, long-creeping (parasitica), or thick and rather short-ish creeping (dentata).  The rhizome condition is very important in Thelypteris.

2. The BOTTOM pinnae are always the most important - but are not pressed properly and are mostly out of the picture. In paratsitica they are longer and so is the lowests acroscopic pinna=lobe.

3. I need to see the venation against the light, close-up - 1 pair anastomosing = parasitica, one and a half anastomosing = dentata.

4. I need to see the hairs on the lower surface of a pinna.  These look too sparse and short for parasitica.  But it needs a close-up photo to show them.

   Chris F._j.