Local variations of Acer nipponicum Hara

Abstract

Acer nipponicum Hara is divided into two subspecies by the form of inflorescences; subsp. nipponicum distributed in Kinki and Chugoku districts, Shikoku and Kyushu, and subsp. orientale Yamaz. distributed in Tohoku and Chubu districts. By the indumentum of leaves, each subspecies is divided into two varieties; subsp. nipponicum var. nipponicum and subsp. nipponicum var. australe Yamaz., subsp. orientale var. orientale and subsp. orientale var. koshinense Yamaz.