Ladakh, August 2022 :: Rheum for ID :: ARK2022-178

[Alka Khare]

Hello friends

This was near Lachung la in Ladakh in August 2022.

Requested to please provide ID.

Thanks and regards

Alka Khare

[Alka Khare]

2 more

[Saroj Kasaju]

Looks like Rheum spiciforme Royle.

Thank you.

Saroj Kasaju

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[J.M. Garg]

Going by Distribution in the Checklist of Ladakh, Saroj ji may be right. 

Although it is quite close with Rheum moorcroftianum Royle, as per keys from Flora of China:

8 (7)	Leaves broadly ovate or ovate-elliptic, both surfaces hairy, apex obtuse; fruit ellipsoid; perianth green.		30 R. spiciforme
+	Leaves ovate or triangular-ovate, glabrous or hairy abaxially, apex obtuse to acute; fruit ovoid or broadly ovoid; perianth yellow-white.		(9)
9 (8)	Leaves ovate, glabrous; panicle 2-4(or 5)-branched from base; fruit ovoid, 7-8 × 5-6 mm, wings 1-1.5 mm wide.		31 R. moorcroftianum
+	Leaves triangular-ovate, pubescent abaxially; panicle much branched from base; fruit broadly ovoid, 7.5-8.5 × 7-8 mm, wings ca. 2.5 mm wide.		35 R. reticulatum

Are both surfaces hairy ?

Pl. check.

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With regards,
J.M.Garg

[Saroj Kasaju]

Thank you Mr. Garg !

Saroj Kasaju

[Alka Khare]

Thank you Garg ji and Saroj ji.

Regards

Alka Khare

[Saroj Kasaju]

OK Alka Ji !

Thank you.

Saroj Kasaju

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[Gurcharan Singh]

Yes, R. spiciforme looks more likely.

Dr. Gurcharan Singh

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

https://www.gurcharanfamily.com/

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[J.M. Garg]

Are both surfaces of leaves hairy?

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With regards,
J. M. Garg

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[Saroj Kasaju]

Thank you Gurucharan Sir !

Thank you.

Saroj Kasaju

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[Alka Khare]

Thank you Sir ji.

Garg ji, attaching a close up of the leaves, if it helps.

I do not think they are hairy.

Regards

Alka Khare

[J.M. Garg]

May be difficult to judge from photos sometimes, as keys were usually made based on herbarium specimens. 

Furthermore

Flora of China says: both surfaces papilliferous or abaxially glabrous; 

Flora of Pakistan says: usually glabrous; 

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With regards,
J.M.Garg