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Betula delavayi Franchet var. microstachya P. C. Li
FOC
Xizang (Tibet): Mangkang (Markham) Xian. Between Mangkang and the Jinsha Jiang on highway 318, along the Xi Qu (Xi River). Cut over remnant Picea forest on slope with scattered shrubs of Betula, Caragana, Cotoneaster and Rosa. 29°44'28"N, 98°40'51"E; 3600-3650 m.
On slope. Tree ca. 2 m tall; bark brownish gray; catkins reddish.
D. E. Boufford, B. Bartholomew, D. A. Eaton, X. H. Li, R. H. Ree, B. Xu, J. P. Yue, J. W. Zhang & X. X. Zhu
40581 16 July 2009
 
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