Polygonaceae Fortnight: Polygonum tubulosum from Kashmir-GSMAY60

[Gurcharan Singh]

Polygonum tubulosum, photographed from Srinagar, Kashmir

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: 9810359089

http://www.gurcharanfamily.com/ 
http://people.du.ac.in/~singhg45/

[Nidhan Singh]

This is perhaps himalyan copy of Polygonum pleibium...
Thanks for sharing Sir...

[Ritesh Kumar Choudhary]

Thanks for sharing Sir!

Regards,

Ritesh.

[J.M. Garg]

Some earlier relevant feedback from an old thread:

“According to Tropicos and Fl. Pakistan, Polygonum tubulosum is a

synonym of Polygonum rottboellioides. A scrutiny of the black and
white photograph and illustration of P. rottboellioides provided in
'The Polygonaceae of Kashmir Himalaya' and in Fl. Pakistan
respectively, I am assuming your plant to be Polygonum rottboellioides
var. tibetica.

The only problem is the number of stamens as appearing in your
photograph 'b' (as small dots) seems to be more than five. P.
rottboellioides has 4-5 stamens only. In that case, I would suggest
this plant as another form of P. plebejum. A high resolution image
would help.

Best regards,
Ritesh.”

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With regards,
J.M.Garg

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[J.M. Garg]

Forwarding again for Id assistance please.

Some earlier relevant feedback:

This is perhaps himalyan copy of Polygonum pleibium... Thanks for sharing Sir...

Some earlier relevant feedback from an old thread:

“According to Tropicos and Fl. Pakistan, Polygonum tubulosum is a synonym of Polygonum rottboellioides. A scrutiny of the black and white photograph and illustration of P. rottboellioides provided in 'The Polygonaceae of Kashmir Himalaya' and in Fl. Pakistan respectively, I am assuming your plant to be Polygonum rottboellioides var. tibetica.

The only problem is the number of stamens as appearing in your photograph 'b' (as small dots) seems to be more than five. P. rottboellioides has 4-5 stamens only. In that case, I would suggest

this plant as another form of P. plebeium. A high resolution image would help. Best regards, Ritesh.”

---------- Forwarded message ----------
From: Gurcharan Singh <sing...@gmail.com>
Date: 14 May 2014 08:17
Subject: [efloraofindia:188469] Polygonaceae Fortnight: Polygonum tubulosum from Kashmir-GSMAY60
To: efloraofindia <indian...@googlegroups.com>

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[Gurcharan Singh]

Forwarding again for for ID confirmation

Distributed as Polygonum rottboellioides var. tibetica ?

Correct name would be Polygonum rottboellioides var. tibeticum (Hook. fil.) R. R. Stewart , as according to Catalogue of Life

Group discussion at

Polygonaceae Fortnight: Polygonum tubulosum from Kashmir-GSMAY60 (google.com) 

[Gurcharan Singh]

Forwarding again for for ID confirmation

Distributed as Polygonum rottboellioides var. tibetica ?

Correct name would be Polygonum rottboellioides var. tibeticum (Hook. fil.) R. R. Stewart , as according to Catalogue of Life

Group discussion at

Polygonaceae Fortnight: Polygonum tubulosum from Kashmir-GSMAY60 (google.com) 

---------- Forwarded message ---------
From: Gurcharan Singh <sing...@gmail.com>
Date: Wednesday, May 14, 2014 at 8:17:38 AM UTC+5:30
Subject: Polygonaceae Fortnight: Polygonum tubulosum from Kashmir-GSMAY60
To: efloraofindia <indian...@googlegroups.com>

[J.M. Garg]

Hi, Singh ji,

Ritesh ji has requested you for posting high res. images.

May I request you to pl. post high res. images.

--

With regards,
J.M.Garg

[Gurcharan Singh]

Here is the highest resolution I have

[Gurcharan Singh]

one more image

[Gurcharan Singh]

one more

[Saroj Kasaju]

Polygonum plebeium R.Br.

Thank you.

Saroj Kasaju

To view this discussion on the web, visit https://groups.google.com/d/msgid/indiantreepix/614adb18-62c5-4bb8-aede-b3f4a031bdf6n%40googlegroups.com.

[Gurcharan Singh]

Plants are clearly puberulus and leaves acute, I would go with  Polygonum rottboellioides Jaubert & Spach var.  tibetica (Hook. f.) R. R. Stewart the current name for P. tubulosum Boiss. Please see this portion of stem.