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 grayanum / Nekonomesou ネコノメソウ

Chrysosplenium grayanum is a perennial herb growing in clusters in wet places in mountainous regions, with runners stretching in all directions. The height is to be measured between 5 and 20cm. Leaves are of opposite phyllotaxis, each 5-20mm in size, oval-shaped, with 3-8 obtuse serrations on the margins. Bracts are greenish and in the same shape as on-stem leaves. Flowers are as small as 2mm in diameter, light yellow, with erect sepals, and stamens numbering 4 in all. Bloom time: April-May.