Yazdy,
The pictures source is reliable, that is indeed jacquemontii but do
check the appendix of the flower in the background. It is not the
appendix but the spathe tip that is prortruding upwards with
jacquemontii, the appendix of jacquemontii is shorter than the spathe
blade. Do also check some other pictures of this species on the
internet and you will see the distinct appendix that is never as s-
shaped turning upwards as the plant from Alok
Arisaema concinnnum has an even shorter appendix that hardly
prortrudes the spathe mouth. Apart from that, it is from a different
section with a radiatisect leaflets ("parasol type"), not a pedatisect
leaf like tortuosum of jacqemontii.
A feature to look out for when comparing the leaves of jacquemontii
and tortuosum is the presence of a rachis in tortuosum, a "sub" leaf
stalk on which the lateral leaflets are attached, in jacquemontii the
leaves are more or less attached to a central point, in tortuosum the
lateral leaflets are attached to this axis. Although the axis can be
short in some forms of tortuosum, it is always present. It is also
worth noting that the flowers of jacquemontii are either male or
female, the flowers of tortuosum are either male or bisexual. But for
that you need to open up the spathe tube so that is side information.
It is correct the plant from Alok is conform the description of
Arisaema curvatum in Flora Simlensis but the distinctive character
that set curvatum apart from tortuosum was the more narrow, linear
lanceolate leaflets. In current literature Arisaema curvatum is not
recognised as a separate taxon anymore and is a full synonym of
tortuosum. Tortuosum is a very widespread species and as a
consequence, highly polymorphic with many variants, both in the
Himalayas as well as in S India. The flower shape and presence of the
S-shaped upward appendix is always present, the main variation is in
the other plant parts. The most important reason why all the variants
are no longer considered separate taxa is that the variation seems to
be continuous, the absence of stable characters or character-sets does
not allow them to warrant a separate taxonomic status.
Hope this helps.
Pascal
---------- Forwarded message ----------
From: Gurcharan Singh <[email protected]>
Date: Oct 31, 3:36 pm
Subject: Kalatope Aisaema id al240711
To: efloraofindia
Yazdy ji
It is definitely not A. jacquemontii, which does not have more than 7
leaflets. A. concinnum has almost dark brown spathe with stron veins.
The
description clearly matches with A. curvatum from Flora Simlensis. It
is
another matter whether this species deserves an independent status or
not.
--
Dr. Gurcharan Singh
Retired Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297 Mob: 9810359089http://people.du.ac.in/~singhg45/
On Mon, Oct 31, 2011 at 8:00 PM, Yazdy Palia <[email protected]>
wrote:
> Dear Dr.Gurcharan Singh ji,
> copying a linkshowing the picture of Arisaema jacquemonti. Am not sure
> if the source is reliable.
>http://www.pacificbulbsociety.org/pbswiki/index.php/ArisaemaSpeciesThree
> It is possibly Arisaema concinnum , giving the link below
>http://www.pacificbulbsociety.org/pbswiki/index.php/ArisaemaSpeciesOne
> Regards
> Yazdy.
> On Mon, Oct 31, 2011 at 3:43 PM, J.M. Garg <[email protected]> wrote:
> > Forwarding again for Id confirmation or otherwise please.
> > Some earlier relevant feedback:
> > “may be Arisaema tortuosum” from Balkar ji.
> > “Perhaps Arisaema jacquemontii
> > --
> > Dr. Gurcharan Singh”
> > “Balkar ji I also think this is not Arisaema tortuosum rather Arisaema
> > jacquemontii
> > Tanay”
> > ---------- Forwarded message ----------
> > From: Alok Mahendroo <[email protected]>
> > Date: 24 July 2011 20:12
> > Subject: [efloraofindia:74984] Kalatope Aisaema id al240711
> > To: [email protected]
> > Dear friends,
> > A commonly seen plant here often believed by locals to do something with
> > snakes.. no doubt because of it's shape..
> > Location Kalatope, Chamba
> > Altitude 2100mts
> > Habit herb
> > Habitat wild
> > Plant height 18 inches
> > season now
> > regards
> > Alok
> > --
> > Himalayan Village Education Trust
> > Village Khudgot,
> > P.O. Dalhousie
> > District Chamba
> > H.P. 176304, India
> >www.hivetrust.wordpress.com
> >www.forwildlife.wordpress.com
>http://mushroomobserver.org/observer/observations_by_user?_js=on&_new...
> > --
> > With regards,
> > J.M.Garg ([email protected])
> >http://en.wikipedia.org/wiki/User:Jmgarg1
> > 'Creating awareness of Indian Flora & Fauna'
> > The whole world uses my Image Resource of more than a thousand species &
> > eight thousand images of Birds, Butterflies, Plants etc. (arranged
> > alphabetically & place-wise):
> >http://commons.wikimedia.org/wiki/Category:J.M.Garg. You can also use
> them
> > for free as per Creative Commons license attached with each image.
> > For identification, learning, discussion & documentation of Indian Flora,
> > please visit/ join our Efloraofindia Google e-group:
> >http://groups.google.co.in/group/indiantreepix(more than 1725 members &
> > 85,000 messages on 30/9/11) or Efloraofindia website:
> >https://sites.google.com/site/efloraofindia/(with a species database
> > of around 5500 species).
> > Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of
> > India'.
