Requesting a fern ID

[Sachin Bhaskar]

Respected community,

Habit: herb

Date: 1/10/2021

Place: Thiruvananthapuram, adjoining Agasthyamalai biosphere reserve.

Habitat: seen around the damp rock crevices.

Striking characters: Silvery powdery mass in the abaxial surface of the frond. 

Thanks and regards,

Sachin Bhaskar.

[J.M. Garg]

Hi, Sachin ji,

Do you have an image of the back side?

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With regards,
J.M.Garg

[Sachin Bhaskar]

Sure, here it is.
Thanks Garg ji.

[J.M. Garg]

Thanks, Sachin ji.

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With regards,
J.M.Garg

[J.M. Garg]

Thanks a lot, Chris ji

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With regards,
J. M. Garg

---------- Forwarded message ---------
From: Chris Fraser-Jenkins <>
Date: Fri, 1 Oct, 2021, 10:26 pm
Subject: Re: [efloraofindia:400778] Requesting a fern ID
To: J.M. Garg <jmg...@gmail.com>

Er, I think you mean Underside!!  Back side is usually used to refer to the human lower posterior - don't mind me saying!

But actually this is such an abundant, widespread and well known species, no further image is needed.  It is Pityrogramma calomelanos, which is an adventive S.  and C. American  species that spread around the world since the late 19th Century.  It first appeared in Sri Lanka before spreading to India.  Then spread to even the most remote corners of India like Ladakh, even!

It spreads along paths and it may well be that the spores are carried along on the clothes of passers-bye, as a weedy invasive species.

The other adventive Pityrogramma in South India (not yet in the north) is Pityrogramma austroamericana, which has slightly shorter fronds and subtly different pinna-segments - and bright yellow farina beneath, not white.

In the 1950s they used to be cultivated in many heated greenhouses in Europe etc. as Silver and Gold ferns, that come up spontaneously from spores on old brickwork.  Nowadays few can afford to heat greenhouses, anyway.

Chris Fraser-Jenkins, Portugal.

[J.M. Garg]

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With regards,
J. M. Garg

---------- Forwarded message ---------
From: Sachin Bhaskar <sachinbh...@gmail.com>
Date: Sat, 2 Oct, 2021, 7:34 am
Subject: Re: [efloraofindia:400778] Requesting a fern ID
To: J.M. Garg <jmg...@gmail.com>

Thank you very much! I've learnt something new today! Have a great day.