This Arisaema has been observed in various colour forms in AP but does
not seem to fall in any of the know species. Because of the appendix
shape it shows some resemblance with Arisaema elephas (which generally
is purple flowered) but particularly in the last picture the
reticulation on the inside of the spathe blade shows its close
affinity with members of the Arisaema griffithii group. Griffithii
normally has a thin, threadlike appendix but in some areas at higher
elevations the appendices seem to get shorter and thicker and slide
towards Arisaema elephas. This occurs for instance in the Yumthang
area of N Sikkim. Because of the present reticulation (nettled veins)
I would suggest to id it as Arisaema griffithii aff. Further field
research is needed to establish its true status and find out whether
it deserves a separate status. Because Arunachal Pradesh is in between
the Indo Himalayan and Sino Himalayan Flora many intermediate forms of
Arisaema have been found of Indian and Chinese species, for instance
intermediates between the sister species Arisaema galeatum (India) and
Arisaema dahaiense (China).
Some remarks on the proposed names in this thread:
- As noted Arisaema handelii has a rugose (rough, like sandpaper)
appendix and a rather restricted distribution range in China, the
plants on the pictures have a smooth appendix. A. handelii also has a
flower stalk shorter than the leaf stalks in contrast to the plants on
the pictures.
- Arisaema sivadasanii is a narrow endemic species from S India and is
recently reduced to a variety of Arisaema tortuosum, it does not occur
in N India and is usually autumn flowering, it belong to a different
section within the genus and has pedatisect leaves, not tripartite
- Arisaema hookeri ("hookerianum) is a full synonym of Arisaema
griffithii. It is the lowland form of griffithii from ~2000 m altitude
that occurs for instance at Tiger Hill in W Bengal, it is usually
reddish purple and of all the forms of griffithii has a spathe that is
the most turned back on itself pointing much backward and usually even
so recurved that it embrasses the flowering stalk.
Hope this helps,
Pascal Bruggeman
The Netherlands
---------- Forwarded message ----------
From: Gurcharan Singh <[email protected]>
Date: 6 nov, 01:36
Subject: Fwd: [efloraofindia:46090] id pl. of Arisema sp.
To: efloraofindia
Forwarding again for Id confirmation or otherwise pl.
Some earlier relevant feedback:
“Tabish ji, the leaves are broadly trifoliolate, and not digitate as
in
case of A. tortuosum. I too have seen this plant (certainly not A.
tortuosum) at the Eaglenest pass and wondering about its ID. Regards,
Shrikant”
“I can't make out the leaves clearly from the picture. *If they are*
*
indeed trifoliate, it surely cannot be A. tortuosum.
*
Then, this could be a species not yet reported from Arunachal Pradesh.
We found Arisaema elephas in Tawang region, from where it is not
reported (as far as I know). So, one may have to look at some species
from China, the neighboring region.
* One such candidate is Arisaema handelii, which has trifoliate
leaves,
* http://www.aroid.org/genera/arisaema/herold/Images/arhandelii.jpg
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200027206
" Spathe green, purple, or dark green with broad white stripe",
"Appendix whitish, narrowly conic, basal 4-6 cm densely papillose or
rugose, ca. 1.5 cm in diam., abruptly narrowed at base into stipe ca.
6 × 5 mm, distal part smooth and gradually drawn into flagellum to 38
cm in total, exserted from spathe tube and tortuous, pendulous in
distal flagellate part. "
- Tabish”
A reply from Dr. M.K.Pathak:
"*Arisaema hookeri*"
"May be A. sivdasani" from Sharad Kambale ji.
--
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/
---------- Forwarded message ----------
From: ushaprabha page <[email protected]>
Date: Tue, Aug 31, 2010 at 5:52 AM
Subject: [efloraofindia:46090] id pl. of Arisema sp.
To: [email protected]
Which Arisaema-id pl.
Location- Eagle nest sanct. Altitude 9500feet.
time12.35 p.m.on 22nd April 10.
Ushaprabha.
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