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A new species and two new records of Quercus (Fagaceae) from northern Vietnam.

ABSTRACT: A new species, Quercus xuanlienensis Binh, Ngoc & Bon, is described from Xuan Lien Nature Reserve, Vietnam. The new species is morphologically similar to Q. edithiae Skan, in having 8-11 pairs of secondary veins, bowl-shaped cupules and ellipsoid to cylindrical-ellipsoid and basally convex nuts. It differs in having serrulate leaf margins only at apical 1/5-1/7, almost entire margins of bracts on cupule and much longer nuts. The species is also similar to Q. fleuryi Hickel & A. Camus in having leaves glabrous on both surfaces with only an apically serrulate margin but differs in having shorter petioles, cupules enclosing 1/5 of the nut and much longer nuts. In addition, Q. disciformis Chun & Tsiang. and Q. bella Chun & Tsiang., previously known from China, are newly recorded from Ba Vi National Park, Vietnam.

SUBMITTER: Binh HT

PROVIDER: S-EPMC5770563 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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A new species and two new records of Quercus (Fagaceae) from northern Vietnam.

Binh Hoang Thi HT Ngoc Nguyen Van NV Bon Trinh Ngoc TN Tagane Shuichiro S Suyama Yoshihisa Y Yahara Tetsukazu T

PhytoKeys 20180109 92

A new species, Quercus xuanlienensis Binh, Ngoc & Bon, is described from Xuan Lien Nature Reserve, Vietnam. The new species is morphologically similar to Q. edithiae Skan, in having 8-11 pairs of secondary veins, bowl-shaped cupules and ellipsoid to cylindrical-ellipsoid and basally convex nuts. It differs in having serrulate leaf margins only at apical 1/5-1/7, almost entire margins of bracts on cupule and much longer nuts. The species is also similar to Q. fleuryi Hickel & ...[more]

PMID: 29362550

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