Buergeria
There are four species found in an area that stretches from Hainan ( China ) and Taiwan through the Ryukyu Islands to Honshu ( Japan ) . 
<triplet> Taiwan <subj> Japan <obj> shares border with <triplet> Ryukyu Islands <subj> Japan <obj> country <triplet> Honshu <subj> Japan <obj> country <triplet> Japan <subj> Taiwan <obj> shares border with