Feb2015sk09 Hooghly - Euphorbia sp. ID please

[surajit koley]

I photographed this tree on the 21st Dec., 2013. The tree was found on roadside, cultivated/planted. As can be guessed from the photograph about 20 ft or more tall.

Euphorbia antiquorum L.? Or since it is more than 4m tall tree it is E. ingens ? Or something other?

Thank you

Regards

surajit

[surajit koley]

A new set, photographed today.

Thank you

Regards

[Tapas Chakrabarty]

---------- Forwarded message ----------
From: Nambiyath Balakrishnan <npba...@gmail.com>
Date: Tue, Feb 10, 2015 at 10:31 PM
Subject: Re: [efloraofindia:215046] Re: Feb2015sk09 Hooghly - Euphorbia sp. ID please
To: Tapas Chakrabarty <tcha...@gmail.com>

This is not E. antiquorum. It is probably an introduced plant. It may be E. ingens, but the fruits are dark pink,whereas in E. ingens they are green or greenish yellow. It could also probably be E. candelabrum. I am not sure.

N. P. Balakrishnan

10 Feb. 2015

On 10 February 2015 at 21:48, Tapas Chakrabarty <tcha...@gmail.com> wrote:

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[surajitkoley]

Sir,

Thank you very much for taking care of this tree. I have full faith on you and Balakrishnan Sir.  I have also read the note of Balakrishnan Sir about the limitation of identifying a species only by images. I fully agree.

I have one last request - 

though Roxburgh's Euphorbia arborescens is considered as a synonym of E. antiquorum L., Flora Indica informs it can grow to a pretty large tree, with a round distinct trunk.

Secondly, Haines informs, in his "Botany of Bihar and Orissa". Euphorbia trigona Haworth can grow upto 10-20 ft tree.

Can you please tell me if there is any chance of this species to be E. arborescens Roxb. or E. trigona Haw.?

Thank you again.

Regards

surajit

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[J.M. Garg]

Forwarding again for Id confirmation or otherwise please.

Some earlier relevant feedback:

A new set, photographed today. Thank you Regards

Surajit

This is not E. antiquorum. It is probably an introduced plant. It may be E. ingens, but the fruits are dark pink,whereas in E. ingens they are green or greenish yellow. It could also probably be E. candelabrum. I am not sure. N. P. Balakrishnan 10 Feb. 2015

Thank you very much for taking care of this tree. I have full faith on you and Balakrishnan Sir.  I have also read the note of Balakrishnan Sir about the limitation of identifying a species only by images. I fully agree.

I have one last request -  though Roxburgh's Euphorbia arborescens is considered as a synonym of E. antiquorum L., Flora Indica informs it can grow to a pretty large tree, with a round distinct trunk. Secondly, Haines informs, in his "Botany of Bihar and Orissa". Euphorbia trigona Haworth can grow upto 10-20 ft tree. Can you please tell me if there is any chance of this species to be E. arborescens Roxb. or E. trigona Haw.? Thank you again. Regards surajit

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From: surajit koley <surajitno...@gmail.com>

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[surajit koley]

Ok, Garg Sir, no problem, Tapas Sir's silence meaning it is neither E. arborescens nor E. trigona Haw. I accept it as E. candelabrum.

Thank you for taking care.

Regards

surajit

[Nambiyath Balakrishnan]

This plant cannot be E. antiquorum or any of its synonyms because of the basic difference shown by the inflorescence here. Please examine the above close up of inflorescences. The cyathia here are in diads, with dichotomous branches and each of them is peduncled.  However, in E. antiquorum, the cyathia are usually in triads with the central cyathium sessile and the two lateral one peduncled.

This is unlike any Indian Euphrobias.

N. P. Balakrishnan

18 Feb. 2015

[surajit koley]

Thank you very much Sir for explaining beautifully why this species can not be E. antiquorum. Now I think I can also reject E. lacei Craib, where cyathium is solitary or in dichasium of three cyathia.

I also thank Tapas Sir very much again for helping me. Thanks to Garg Sir for always taking care.

Regards

surajit