Notes For Reference:-

Species, Varieties, or Forms in the Genus Chrysosplenium:

Chrysosplenium album / Shirobananekonomesou
Chrysosplenium echinus / Iwanekonomesou
Chrysosplenium fauriei / Hokurikunekonomesou
Chrysosplenium fauriae f. ferruginiflorum / San'innekonome
Chrysosplenium flagelliferum / Tsurunekonomesou
Chrysosplenium grayanum / Nekonomesou
Chrysosplenium japonicum / Yamanekonomesou
Chrysosplenium kiotense / Botannekonomesou
Chrysosplenium kiotense f. xanthandrum / Kinshibebotannekonomesou
Chrysosplenium macrostemon / Iwabotan
Chrysosplenium macrostemon var. shiobarense / Nikkounekonome
Chrysosplenium nagasei var. nagasei / Hidabotan
Chrysosplenium pilosum / Koganenekonomesou
Chysosplenium tosaense / Tachinekonomesou

Chrysosplenium album / Shirobananekonomesou シロバナネコノメソウ

Chrysosplenium album,   a perennial herb that extends runners after flowering, grows in the wet portions of forests along valleys, where its rosettes bloom. The whole has vellus hairs on it. Leaves are opposite, each fan-shaped, measuring less than 1cm in length, with petioles ranging from 0.3 to 3cm in length, and the tops feature some semicircular serrations on the margins. Flowers lack petals; calyx lobes,4 in number, are white, the tips pointed, standing erect, turning green after flowering, and the anthers are dark red. Bloom time: April-May.