Dendrobium denudans D. Don

[Saroj Kasaju]

Dear Members,

Location: Dailekh, West Nepal

Altitude:  1900 m.

Date: 14 August 2021 

Habit : Wild 

Validation please !

Thank you.

Saroj Kasaju

[Saroj Kasaju]

Thank you.

Saroj Kasaju

[Saroj Kasaju]

Thank you.

Saroj Kasaju

[Saroj Kasaju]

[Saroj Kasaju]

[Saroj Kasaju]

Thank you.

Saroj Kasaju

[Saroj Kasaju]

[Saroj Kasaju]

[Saroj Kasaju]

[J.M. Garg]

Thanks, Saroj ji, for the detailed images. 

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With regards,
J.M.Garg

[Saroj Kasaju]

Thank you Mr. Garg ! Is ID correct ?

Saroj Kasaju

[Pankaj Kumar]

I am not sure. What I see here is Dendrobium monticola or may be something else.

Thanks for sharing.

Pankaj

--

Pankaj Kumar, Ph.D.
IUCN-SSC Orchid Specialist Group Asia

32, 2nd Floor, Shui Wo Tsuen, Lam Tsuen,

Lam Kam Road, Tai Po, New Territories, Hong Kong S.A.R., China

email: sahani...@gmail.com
Phone: +852 9436 6251 (mobile)

[Saroj Kasaju]

Couple of species look alike and difficult to ID.

Thank you Dr. Kumar !

Saroj Kasaju

[Saroj Kasaju]

Correction : Location - Kalikot, West Nepal

                    Elevation - 1695m.

Thank you.

Saroj Kasaju

[Saroj Kasaju]

D. monticola from IOSPE which looks different from my sp.

https://www.google.com/imgres?imgurl=http%3A%2F%2Fwww.orchidspecies.com%2Forphotdir%2Fdenmonticola.jpg&imgrefurl=http%3A%2F%2Fwww.orchidspecies.com%2Fdenmonticola.htm&tbnid=e4Z0QqY9zj9mxM&vet=12ahUKEwiv7quQyZb5AhWs5TgGHUZxATkQMygAegUIARC2AQ..i&docid=kaSRQb2-CaC1-M&w=1218&h=833&q=dendrobium%20monticola&hl=en&client=safari&ved=2ahUKEwiv7quQyZb5AhWs5TgGHUZxATkQMygAegUIARC2AQ

https://www.wikidata.org/wiki/Q15453750

And one image from Flora of Bhutan.

Thank you.

Saroj Kasaju

[Pankaj Kumar]

Dendrobium strongylanthum!!

Sorry for previous mistake!!

Pankaj

--

Pankaj Kumar MSc, PhD, FLS

IUCN-SSC Red List Authority for Orchids of Asia

IUCN-SSC Orchid Specialist Group Asia; Global Orchid Trade Group; Western Ghats Plant Specialist Group

Lam Tsuen, Tai Po, New Territories, Hong Kong S.A.R., P.R. China

email: sahani...@gmail.com; pku...@kfbg.org

[Saroj Kasaju]

Surprisingly, there is no distribution for Nepal ! Could it be a new to Nepal ?

Thank you Dr. Kumar!

Saroj Kasaju

[Pankaj Kumar]

There are a lot of issues with the Nepal orchid list.

1. I would like to see the spread up labellum of this plant to confirm. However, I can see some dark thickening on the margin on labellum. With that characteristics I would guess it is Dendrobium strongylanthum.

2. Looking at the pics on the Orchids of Nepal by Bhakta B. Raskoti:

       a. page 95, what he calls Dendrobium denudans looks to me like D. monticola or D. eriiflorum

       b. page 96, what he calls Dendrobium eriiflorum could be correct but different colour form.

       c. page 103, what he calls Dendrobium monticola for sure is wrong, it is Dendrobium porphyrochilum.

       d. page 107, what he calls Dendrobium porphyrochilum is for sure wrong and it is same plant as on page 96.

But if I tell him that, he gets upset.

There is one more species, Dendrobium numaldeorii which needs to be synonymised under D. strongylanthum.

Then there is second species Dendrobum nareshbahadurii which needs to be merged under D. strongylanthum too.

Your plant may look like Dendrobium denudans, but its not. Both have drooping flowers with long acuminate tips of petals and sepals and lip tip is curved  like a hook downwards. But, denudans doesnt have the black callus on lip. Your plant certainly has that callus.

The latest list of Nepal orchids I have doesnt have D. strongylanthum in it, so yes this is a new record. But it is best to dissect and have a proper plate to confirm and then publish.

Best of luck.

Pankaj

[Saroj Kasaju]

Thank you Dr. Kumar for the detailed analysis! Yes I agree there are some mistakes in the book.

It is about 800 km away. However, I shall try to do  as suggested by you.

Saroj Kasaju

[Saroj Kasaju]

I guess it is not matching to Dendrobium strongylanthum Rchb.f. and no distribution  for Nepal. https://www.gbif.org/species/5316149

Closest I can guess is Dendrobium denudans D.Don !The 1st image is from orchids of Bhutan and the 2nd is from Orchids of India !

May I have your further opinion ?

Thank you.

Saroj Kasaju

[Pankaj Kumar]

Please show me your picture again.

Pankaj

--

IUCN-SSC: Chinese Species Specialist Group, Orchid Specialist Group of Asia, 

Global Orchid Trade Group, Western Ghats Plant Specialist Group

Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409 USA

email: sahani...@gmail.com; Pankaj...@ttu.edu | Phone: +1 806 317 7623 (USA); +852 9436 6251 (Hong Kong)

[Saroj Kasaju]

https://groups.google.com/g/indiantreepix/c/FDtKuvzrLxY/m/YfbkBiqEAgAJ

Thank you.

Saroj Kasaju

[J.M. Garg]

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With regards,
J.M.Garg

[Saroj Kasaju]

Dear Dr. Kumar,

Hope you have received the images.

Thank you.

Saroj Kasaju

[Pankaj Kumar]

I can agree that your plant is NOT Dendrobium strongylanthum.

I would like to know a few things Saroj sir:

1. Who told you that your plant is denudans?

2. What is the main character of denudans?

3. Are you sure the image identified in Orchids of Nepal is correct?

4. Are you sure the image in Orchids of Bhutan is correct?

Pankaj

[Saroj Kasaju]

Dear Dr. Kumar,

1. I just guessed among the listed in Nepal, since no other match I could get.

2. No idea

3. I have not posted any images from the book Orchids of Nepal.

4. I am not sure about the ID as given in the book Orchids of Bhutan and 

   BSI book Orchids of India.

Thank you.

Saroj Kasaju

[J.M. Garg]

Thanks, Pankaj ji and Saroj ji

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With regards,
J.M.Garg

[Pankaj Kumar]

There is denudans, numaldeorii, nareshbahadurii, strongylangthum they all have long petals and sepals but the difference is on the labellum. Labellum as callus, normal one and then dark black ugly types.

Unless we see the lip properly, it is not easy to make out.

Check the image below. 

All these species are found in northeast India and I am sure they can reach Nepal too.

Pankaj

[Madhusudhan Khanal]

Wow considerable differences on the lip. Most specimens identified as denudans can be the other species as well. Thank you for sharing sir. 

Yours sincerely, 

Madhusudhan 

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[Saroj Kasaju]

I could not decide. Sending cropped image .

Thank you.

Saroj Kasaju

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[J.M. Garg]

Thanks, Pankaj ji and Saroj ji

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With regards,
J.M.Garg

[J.M. Garg]

Thanks, Pankaj ji and Saroj ji

On Tue, 5 Mar 2024 at 15:44, Saroj Kasaju <kasaj...@gmail.com> wrote:

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With regards,
J.M.Garg

[Saroj Kasaju]

Image of dry specimen.

Thank you.

Saroj Kasaju