Alnus sieboldiana
Alnus sieboldiana is an alder species found on the islands of Honshu, Shikoku, and Suwanosejima in Japan.
A. sieboldiana contains ellagitannins including alnusiin, tellimagrandin I, pedunculagin, casuarinin, casuariin and 2,3-O--hexahydroxydiphenoyl-D-glucose.
The Latin specific epithet sieboldiana refers to German physician and botanist Philipp [Franz von Siebold].