Malvaceae Week: Sida yunanensis from Delhi Pl validate

[Gurcharan Singh]

Sida yunnanensis Hu, Fl.China,fam. 153.16.t.16.f.7. 1955

I have been working on this plant for some time, similar to what Balkar ji uploaded as Sida sp. from Panipat and Tanay identified as S. rhomboidea (another but not accepted now name for S. rhombifolia). This interesting plant at first sight appears to be Sida rhombifolia var. obovata as per brief description in Flora of British India. As per eFlora of Pakistan this is a synonym of Sida yunanensis but according to eFlora of China it is a synonym of S. alinifolia var. obovata. Author of eFlora of China was aware of this when he writes "The original author suggested that Sida yunnanensis was related to S. spinosa Linnaeus, but it is distinguished by the broadly elliptic or obovate leaf blades (ovate-lanceolate in S. spinosa), shorter petioles (3-7 mm as opposed to 2-20 mm in S. spinosa), and the absence of the short nodal spines characteristic of S. spinosa. Paul (Fl. India 3: 290. 1993) included S. yunnanensiswithin S. rhombifolia var. rhombifolia, while Abedin (Fl. W. Pakistan 130: 81. 1979) accepted it and extended it to include material from India, Kashmir, Myanmar, and Pakistan."

Now let us understand this plant, the leaves are elliptic-obovate, up to 5 cm long, clearly closely white tomentose beneath especially in plants of dry habitats, leaves more straight at less wrinkled as compared to other species, significantly flowers tend to be occurring in clusters mostly on short axillary branches, calyx is sparcely hairy, flowers yellow about 1 cm across and most importantly in all my specimens carpels are five, the 5 mericarps in fruit have very small (hardly 1 mm) awns closely converging.

To arrive at better conclusion I tried to identify this plant from keys given in both floras, and in both cases the key led me to S. yunanensis (characterised by leaves up to 5 cm long, broadly elliptic to obovate, flowers in fascicles, mericarps 5 (-7), with less than 2 mm long awns).

   Why it can't be S. alnifolia var. obovata as per description provided by  eFlora of China is that it has smaller than 2 cm leaves, flowers solitary, and 6-8 mericarps.

The plant was photographed in Vikas Puri, New Delhi, growing in a neglected area in Park. Very common in Delhi.

Your comments please. 

 

--
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://people.du.ac.in/~singhg45/

[Balkar Arya]

Sir You are Great, finally i got name for my plant also

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Regards

Dr Balkar Singh
Head, Deptt. of Botany and Biotechnology
Arya P G College, Panipat
Haryana-132103
09416262964

[J.M. Garg]

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With regards,
J.M.Garg (jmg...@gmail.com)
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 1750 members & 97,000 messages on 30/11/11) or Efloraofindia website: https://sites.google.com/site/efloraofindia/ (with a species database of more than 6000 species).

Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of India'. 

[jmgarg1]

Forwarding again for Id confirmation or otherwise please.

---------- Forwarded message ----------
From: Gurcharan Singh <sing...@gmail.com>
Date: 10 September 2011 10:01
Subject: [efloraofindia:80919] Malvaceae Week: Sida yunanensis from Delhi Pl validate
To: efloraofindia <indian...@googlegroups.com>, Flowers of India <flowers...@gmail.com>

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With regards,
J.M.Garg

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 1870 members & 1,18,000 messages on 31/5/12) or Efloraofindia website: https://sites.google.com/site/efloraofindia/ (with a species database of more than 6500 species).

[Gurcharan Singh]

Forwarding for ID

Distributed as Sida yunnanensis ?

Group discussion at

Malvaceae Week: Sida yunanensis from Delhi Pl validate (google.com)

[Gurcharan Singh]

Forwarding for ID

Distributed as Sida yunnanensis ?

Group discussion at

Malvaceae Week: Sida yunanensis from Delhi Pl validate (google.com)

---------- Forwarded message ---------
From: Gurcharan Singh <sing...@gmail.com>
Date: Saturday, September 10, 2011 at 10:01:46 AM UTC+5:30
Subject: Malvaceae Week: Sida yunanensis from Delhi Pl validate
To: efloraofindia <indian...@googlegroups.com>, Flowers of India <flowers...@gmail.com>

[Gurcharan Singh]

Forwarding again

Dr. Gurcharan Singh

Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.

https://www.gurcharanfamily.com/

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[Mahadeswara]

Awesome pictures  with all the details shown clearly ; and taxonomic description ! .

[Saroj Kumar Kasaju]

https://ppbc.iplant.cn/sp/22478

Thank you

Saroj Kasaju

---------- Forwarded message ---------
From: Mahadeswara <swamy...@gmail.com>
Date: Friday, May 14, 2021 at 10:02:43 AM UTC+5:45
Subject: Re: Malvaceae Week: Sida yunanensis from Delhi Pl validate
To: efloraofindia <indian...@googlegroups.com>