Ixeridium dentatum subsp. nipponicum var. albiflorum f. leucanthum ("Shirobananigana")

Japanese name: シロバナニガナ （白花苦菜）
Scientific name: Ixeridium dentatum subsp. nipponicum var. albiflorum f. leucanthum

[Overview]
A perennial 30–40 cm tall, found along roadsides and in grassland.
The leaves are of two kinds, basal leaves and stem leaves; the basal leaves remain at flowering time.
The stem leaves are alternate, elliptic-lanceolate, and notched.
The bases of the stem leaves clasp the stem.
Many white flower heads are borne in corymbs at the stem tips.
The fruit is an achene.

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