Help with ID of Swertia sp-01012020-1

[Gurcharan Singh]

Please help with ID of this species of Swertia uploaded on our website as S. alata but looking different especially comparing with images on Flowers of India. S. alata is supposed to have " nectary watch-pocket shaped with short, compound fimbriae, one lobe", whereas our plant has nacked nectaries. Our plant resembles S. cordata more closely in leaves and nectaries, but lacks purple striations.  

    Clicked from Deovan Herbal Garden, Chakrata, September 17, 2011.

Dr. Gurcharan Singh

Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Mob: 9810359089

https://sing96.wixsite.com/mysite-1

[Saroj Kasaju]

Swertia lawii (C.B.Clarke) Burkill ??

Thank you.

Saroj Kasaju

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Thank you.

Saroj Kasaju

[J.M. Garg]

Yes, Swertia cordata as per images and details herein.

Does not match with Swertia alata (G. Don) Clarke in Hook.f. as per GBIF  Flowers of India  Earth

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With regards,
J.M.Garg

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[Gurcharan Singh]

Garg ji, calling it S. cordata we will have to ignore two things: lack of purple striations, four sepals and petals.

Dr. Gurcharan Singh

Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Mob: 9810359089

https://sing96.wixsite.com/mysite-1

[Saroj Kasaju]

On Wed, 8 Jan 2020 at 7:34 pm, Gurcharan Singh <sing...@gmail.com> wrote:

Garg ji, calling it S. cordata we will have to ignore two things: lack of purple striations, four sepals and petals.

Is ID correct ?

https://www.flowersofindia.net/catalog/slides/Law's%20Swertia.html

Thank you.

Saroj Kasaju

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Thank you.

Saroj Kasaju

[Gurcharan Singh]

Don't know about Flowers of India but this revision of Swertia also shows purple striations and raised nectaries with fimbriae.

https://www.researchgate.net/publication/279320611_A_taxonomic_revision_of_Swertia_L_Gentianaceae_in_South_India_with_one_new_species_and_seven_lectotypifications/figures?lo=1  

Dr. Gurcharan Singh

Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Mob: 9810359089

https://sing96.wixsite.com/mysite-1

[J.M. Garg]

Yes, Singh ji.

Variations in the number od petals and sepals in quite common in many species.

You may check GBIF, you may possibly find one.

Lack of purple striations also appears common in Swertia, as observed in many posts in efi site.