Alnus Sieboldiana

Alnus sieboldiana is an alder species found on the islands of Honshū, Shikoku, and Suwanose-jima in Japan. A. sieboldiana contains the ellagitannins alnusiin, tellimagrandin I, pedunculagin, casuarinin, casuariin and 2,3-O--hexahydroxydiphenoyl-D-glucose.