white false hellebore
Veratrum oxysepalum Turcz.

Veratrum oxysepalum, known as white false hellebore, is a species in the Melanthiaceae family. It was first described in 1840 by Turcz. and is native to regions in northern Asia, including Alaska, Japan, Korea, and various parts of Russia and China.
Description
Veratrum oxysepalum is a member of the Melanthiaceae family, a group of herbaceous plants commonly found in temperate regions. This species is distributed across Alaska, the Amur region, Buryatiya, Chita, Irkutsk, Japan, Kamchatka, Khabarovsk, Korea, Krasnoyarsk, Kuril Is., Magadan, Manchuria, Primorye, Sakhalin, and Yakutskiya. It was first scientifically documented in 1840 by Turcz. The plant is commonly referred to as white false hellebore in English and is part of the Veratrum genus, which includes several toxic species. Its geographic range reflects a preference for cool, temperate climates.
Other common names
white false hellebore
Distribution
NO · Alaska · Amur · Buryatiya · Chita · Irkutsk · Japan · Kamchatka · Khabarovsk · Korea · Krasnoyarsk · Kuril Is. · Magadan · Manchuria · Primorye · Sakhalin · Yakutskiya
Synonyms
Veratrum alpestreVeratrum patulumVeratrum sikokianumVeratrum album subsp. oxysepalumVeratrum album var. oxysepalum