Thanks, Chris ji.
---------- Forwarded message ----------
From: Chris Fraser-Jenkins
Date: 23 November 2016 at 13:43
Subject: Re: Fwd: Adiantum venustum in cultivation in New York Botanical
Garden?
To: "J.M. Garg" <[email protected]>
Dear Chris,
Yes, I reckon that is A. venustum - as opposed to the related A.
tibeticum. It has the narrower segments and longer, narrower teeth
characteristic of A. venustum sensu stricto. It should also develop a
larger fronds with more segments than in A. tibeticum and is more of a
woodland species. Both are grown commonly in N. American and British
gardens.
In general Adiantum in India is one of the more stable genera with
fewer critical taxa and less revision needed. A. pedatum is here and
extends further west than the related A. myriosorum.
Recent treatments are in my 2008 book Taxonomic Revision etc. and in
Nepal vol 1 (2015), and the full Indian situation is in the forthcoming
Annotated Checklist of Indian Pteridophytes Part 1 (in press 2016). A
aethiopicum was a mistake - not present in Asia. A. capillus-veneris is
everywhere! There are also some widespread New World adventives. 15
native species, 8 adventives or widely cutivated in India, and various
subspecies.
Best wishes,
Chris F.-J.
------------------------------
*From:* J.M. Garg <[email protected]>
*To:* efloraofindia <[email protected]>
*Cc:* [email protected]
*Sent:* Wednesday, 23 November 2016, 10:28
*Subject:* Fwd: Adiantum venustum in cultivation in New York Botanical
Garden?
Thanks, Chadwell ji
---------- Forwarded message ----------
From: "C CHADWELL" <[email protected]>
Date: 23 Nov 2016 2:57 am
Subject: Adiantum venustum in cultivation in New York Botanical Garden?
To: "J.M. Garg" <[email protected]>
Cc:
I came across this fern growing in shady parts of the rockery of the New
York Botanic Garden.
It is grown as Adiantum venustum. Is this correct? It seemed to be
cultivated quite widely in
the US (Northern states that is).
Excuse the poor quality photo but it might provide sufficient detail to be
reliably named by the
group's fern expert.
As to other Adiantum spp., Stewart took a serious interest in ferns and
covers these in his
'An Annotated Catalogue of the Vascular Plants of Pakistan & Kashmir' -
there have been major
advances taxonomically and nomenclaturally in the past 50+ years since this
was published (many
down to this group's fern expert).
Stewart listed A.aethiopicum from Kurram Valley @ 1800m; A.capillus-veneris
as the commonest and
most widespread of the genus. He considered in the plains it was often
found on the inner walls of wells and on
the banks of watercourses, whilst Koelz found it at 3750m in Ladakh;
A.incisum as common in the plains to 1500m;
A.pedatum - common in Kishenganga valley @ 1800-2400m and in rich forest
loam in Kashmir @ 2100-3000m;
A.vensutum - in N.Pakistan & Kashmir @ 1800-2700m (occasionally to 3600m),
one of the commonest ferns.
I wonder what the current thinking is about the genus? I see there are no
images of A.pedatum on the site or has this
name been relegated to a synonym?
Best Wishes,
Chris Chadwell
81 Parlaunt Road
SLOUGH
SL3 8BE
UK
www.shpa.org.uk
--
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