two plants two names which is which: Ixora polyantha and Ixora finlaysoniana??

[Gurcharan Singh]

These two types of plants of Ixora have been bothering me for a long time. Both differ clearly from similar species I. pavetta in much longer corolla tube, 20-30 mm long. Both have nearly elliptic-lanceolate to elliptic-oblanceolate leaves, 6-20 cm long, with cuneate base and narrowed to 5-10 mm long petiole. Both have white flowers, which in one  (sp-a) are lesser in number, forming a spreading inflorescence and petals are flat nearly 2.5 mm wide. In second (sp-b) flowers are more in number, dense and forming nearly globose inflorescence; with corolla lobes which are mostly reflexed along the margin (and looking similar to I. pavetta) so that they look very narrow (hardly 1-1.5 mm wide), but a few flowers would have flat corolla lobes which may be up to 2.5 mm wide or so (latter has been tentatively identified by Dinesh ji as I. finlaysoniana).

http://www.flickr.com/photos/dinesh_valke/2093739918/in/photostream/

http://www.flickr.com/photos/dinesh_valke/2093737856/in/photostream/

Ixora polyantha is described from Malabar in India and is commonly cultivated in Pakistan and India according to eFlora of India. Ixora finlaysoniana is plant from Thialand, Phillippines, widely cultivated in China and N E India, as per eFlora of China. 

I have tried to find out differences between the two species from available sources, but could not succeed. Could any member lay hands to a publication which describes and keys out both the species, so that our specimens can be clearly fixed?.

  

--
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/

[Gurcharan Singh]

Please read eFlora of India as eFlora of Pakistan

-- 
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/ 

[J.M. Garg]

Forwarding again for any assistance in the matter please.

--

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 1680 members & 75,000 messages on 31/7/11) or Efloraofindia website: https://sites.google.com/site/efloraofindia/ (with a species database of more than 5000 species)

[J.M. Garg]

A reply:

"This is Ixora finlaysoniana

Santhosh"

[J.M. Garg]

Forwarding again for any assistance in the matter please.

Some earlier relevant feedback:

“This is Ixora finlaysoniana

Santhosh”

---------- Forwarded message ----------
From: Gurcharan Singh <sing...@gmail.com>
Date: 14 May 2011 16:45
Subject: [efloraofindia:69450] two plants two names which is which: Ixora polyantha and Ixora finlaysoniana??
To: efloraofindia <indian...@googlegroups.com>

--

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 1740 members & 90,000 messages on 31/10/11) 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'. 

[Dr E S Santhosh Kumar]

There is a  good monograph on Indian species of Ixora by Tariq Hussain of NBRI. The key and description quite reliable and easy to use. Ixora polyantha is a remarkable species never confusing with any of these shown photographs. I will post a separate photograph of Ixora polyantha for comparison.

Santhosh

--
SANTHOSH
-----------------------------------

Dr. E S SANTHOSH KUMAR PhD, FIAT, FLS
Tropical Botanic Garden and Research Institute, Palode

Karimancode P.O.
Thiruvananthapuram-695562
Kerala, India
www.drsanthosh.wetpaint.com
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[Gurcharan Singh]

Santosh ji

It would be helpful to know the full reference of this monograph on Ixora. I am waiting for your upload.

-- 
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/ 

[Samir Mehta]

Any final guidelines / consensus in this matter?

Regards,

Samir Mehta