Betula kenaica from California-GS03052023

[Gurcharan Singh]

Betula kenaica W H Evans

Syn:  B. papyrifera Marshall var. kenaica (W. H. Evans) A. Henry

Though treated as synonym of B. papyrifera by major databases, is treated as distinct species by Flora of North America. It differs from B. papyrifera Marshall in often pinkish to grayish white bark, smaller leaves 4-5 cm long (5-9 cm in B. papyrifera), less pointed leaf tip and more or less regularly serrate leaves. 

    Photographed from Fremont, California.

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/

[Gurcharan Singh]

One more image

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/

[Gurcharan Singh]

One more image

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/

[Gurcharan Singh]

One more image

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/

[Gurcharan Singh]

One more image, under side of leaf

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/

[Gurcharan Singh]

One more image

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/

[Gurcharan Singh]

Bract and young samara

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/

[J.M. Garg]

I think looks different to me as per images at 
https://commons.wikimedia.org/wiki/Category:Betula_kenaica
https://en.wikipedia.org/wiki/Betula_kenaica
https://myplantin.com/plant/5092
https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:32197-2

Can it be B.nigra as per
https://www.eattheweeds.com/tag/betula-kenaica/
https://en.wikipedia.org/wiki/Betula_nigra
https://hort.extension.wisc.edu/articles/river-birch-betula-nigra/

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With regards,
J.M.Garg

[Gurcharan Singh]

You are correct once again, thanks a lot.

[Gurcharan Singh]

Mostly 7-8 pairs of veins, erect cones, though leaves are smaller, I take it as B. nigra.