Systematic Studies of Asian Aconitum (Ranunculaceae) XV. A New Species from Noto Peninsula, Central Honshu, Japan

摘要

A new species of Aconitum subgenus Aconitum (Ranunculaceae), A. wajimanum Kadota is described from Wajima, Noto Peninsula, Ishikawa Pref., central Honshu, Japan. Aconitum wajimanum is characterized by the pedicels strigose with rough-surfaced, curved hairs, with 2-paired bracteoles, deeply trilobed leaf blades, non-inflated nectary blades and thin and long nectary spurs with slightly incurved apices. Aconitum wajimanum was found to occur along and in evergreen woods mixed with bamboos on hills of the warm temperate zone.'Aconitum japonicum Thunb. var. montanum Nakai [= A. japonicum subsp. japonicum] reported from the Hokuriku District, central Honshu should be ascribed to A. zigzag H. Lev. & Vaniot subsp. ryohakuense Kadota or putative hybrids between A. zigzag subsp. ryohakuense and A. japonicum subsp. ibukiense (Nakai) Kadota. Aconitum japonicum subsp. japonicum is restricted to the Kanto and Chubu Districts (on the Pacific Ocean side), central Honshu, Japan.