Buxus is a genus (the type of the family Buxaceae) of evergreen shrubs and small trees having opposite entire leaves and capsular fruit. This genus is commonly known as the boxwoods and is the most diverse in the family Buxaceae widely distributed on all continents except Australia and Antarctica.
During two fieldwork seasons in 2014 and 2015, researchers from Xishuangbanna Tropical Botanical Garden (XTBG) of the Chinese Academy of Sciences collected five Buxus
The researchers compared Buxus
Leaves of B. pliosinica are elliptic and small, with entire margin, retuse tip, intramarginal vein, and exmedially ramified tertiary veins. The leaves are hypostomatic with anomocytic stomatal apparatuses and giant stomata.
Based on comparisons of leaf morphological and cuticular features, B. sempervirens Linnaeus is considered as the nearest living relative of B. pliosinica.
Buxus pliosinica is the first fossil record of Buxus from the SE margin of the Tibetan Plateau. The occurrence of B. pliosinica
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