Figure 4From: Two new species of Begonia sect. Coelocentrum, B. guixiensis and B. longa, from Sino-Vietnamese limestone karstsDistribution map of Begonia guixiensis (ā ), B. longa (ā), B. cylindrica (ā²), B. brevipedunculata (ā ) and B. vietnamensis (ā).Back to article page