Dendrobium :: microbulbon OR turbinatum :: Purandar fort :: Mar 11, 2009

[Dinesh Valke]

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Dendrobium sp. Purandar fort :: Mar 11, 2009 · 12:43 PM IST :: about 1350 m asl Dear friends, Please help in knowing specific ID of the Dendrobium sp. in this observation, whether D. microbulbon A.Rich. OR D. turbinatum Ormerod & C.S.Kumar

Regards. Dinesh

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[Saroj Kasaju]

I guess this should be Dendrobium microbulbon A.Rich.

Thank you.

Saroj Kasaju

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[Pankaj Kumar]

I have not understood the paper by one south Indian guy very well. He was too insultive to ask him directly over emails.

Here is what is written in paper:

Dendrobium microbulbon differs from D. turbinatum in being leafy (vs. leafless) at flowering time, flowers with a conical, obtuse, incurved (vs. infundibuliform,  acute, almost straight) mentum, and a suborbicular (vs. transversely rectangular) labellum midlobe.

Now to begin with, I do not agree with leafy and non leafy part. It all depends on humidity and rains. If rain is good enough then you sometimes see leaves on the plant for a longer time. However, rest of the characters may look unique. For example D. microbulbon has straight mentum and D. turbinatum will have curved.

You see below, the mentum is slightly curved

but in your image it looks slightly straight. If that is an important character. But then you plant doesnt have leaves and neither has the image I attached above. 

[Dinesh Valke]

Many thanks, Saroj ji, for suggesting the possible ID.

Thanks very much dear Pankaj, for your thoughts and clarity regarding the two species.

Regards.

Dinesh

[J.M. Garg]

So should we take it as Dendrobium microbulbon A.Rich.?

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With regards,
J.M.Garg, 
https://efloraofindia.com/

[Pankaj Kumar]

Yes sir

Pankaj

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--

Pankaj Kumar MSc, PhD, FLS

Adjunct Professor: Miami-Dade College, Miami, Florida, USA

Research Affiliate: Institute of Environment, Florida International University & Fairchild Tropical Botanic Garden, Miami, Florida, USA

Fellow of the Linnean Society of London

IUCN-SSC Red List Authority for Orchids of Asia

Member: IUCN-SSC: Orchid Specialist Group of Asia, Global Trade Subgroup, Chinese Species Specialist Group, Western Ghats Plant Specialist Group

email: sahani...@gmail.com; pankaj...@fiu.edu; pku...@mdc.edu  | Phone: +1 806 317 7623

[Dinesh Valke]

Many thanks Garg ji, Saroj ji and dear Pankaj for help with your thoughts.

Regards.

Dinesh

[Saroj Kasaju]

Thank you Dinesh Ji.

Saroj Kasaju

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[Tabish]

There seems to be no other way to distinguish the two species right now, except the leafiness at flowering. Dinesh's plant is obviously leafless in flower. On the other hand, the image I am attaching of Dendrobium microbulbon from a paper shows a leafy plant in flower. I think we should take Dinesh's plant to be Dendrobium turbinatum unless there are reasons to believe otherwise.

  Tabish

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The waterhole of flower lovers

On Thu, May 22, 2025 at 9:01 PM Pankaj Kumar <sahani...@gmail.com> wrote:

[Pankaj Kumar]

Whose paper is this?

[Tabish]

Attaching it here.

 Tabish

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www.flowersofindia.net
The waterhole of flower lovers

[Pankaj Kumar]

Unfortunately the plant in the image looks to me like Dendrobium peguanum!! Again that species also may or may not have leaves during flowers.

Pankaj

[J.M. Garg]

Hi, Pankaj ji,

You mean the image in the paper or that posted by Dinesh ji.

[Pankaj Kumar]

Image in the paper is peguanum to me.

[J.M. Garg]

Ok, Pankaj ji

With regards,
J.M.Garg, 
https://efloraofindia.com/

[Dinesh Valke]

Many thanks dear Pankaj.Tabish and Garg ji for the above discussion.

However, it is not easy for me to conclude the ID of my observation.

Regards.

Dinesh

[Pankaj Kumar]

Respected Sir

You can keep it as D. microbulbon for the time being.

Pankaj

[Dinesh Valke]

Oh sure, dear Pankaj.

Will retain my notes in flickr and iNaturalist, as they are.

Regards.

Dinesh