Berberis lambertii is a shrub in the family Berberidaceae described as a species in 1921.Parker, Richard Neville. 1921. Bulletin of Miscellaneous Information Kew 1921: 307 It is known only from the Chamoli and Pithoragarh districts of Uttarakhand in northern India. The species was long thought to be extinct because it had not been collected in nearly 100 years until living populations were discovered recently.Umeshkumar L. Tiwari, Gopal Singh Rawat & Bhupendra Singh Adhikari. 2012. Rediscovery of two endemic species of Berberis from Uttarakhand, Western Himalaya, India. Biodiv. Res. Conserv. 28: 19-24
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