| Family | Hydrangeaceae |
| Subfamily | Hydrangeoideae |
| Tribe | Hydrangeae |
| Scientific name | Platycrater arguta Siebold & Zuccarini |
| Synonyms | Platycrater arguta Siebold & Zuccarini var. typica C. K. Schneider |
| Common name | (Japanese common name) baika-amacha (バイカアマチャ, 梅花甘茶 [meaning: cherry flower sweet tea]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (Shizuoka Prefecture, Mie Prefecture, Nara Prefecture, Wakayama Prefecture), Shikoku, Kyushu |
| (Other nations) China | |
| Chromosomal number | 2n=34 |
| Description | Plants 1-1.5m tall. Leaves 10-22cm long, 3-6cm wide, petioles 10-25mm long. Flowers bisexual flowers white 16-22mm across, flowering in June to August. Seeds brown ca. 1mm long. Deciduous. Shrub. |
| Reference | Platycrater arguta Siebold & Zuccarini |
| Platycrater arguta | |
| Note | Platycrater arguta Siebold & Zuccarini var. sinensis H. Hara occurs in China |
| July 2008 at Kochi Prefecture Makino Botanical Garden |
June 2008 at Kochi Prefecture Makino Botanical Garden |
July 2008 at Kochi Prefecture Makino Botanical Garden |
| June 2008 at Kochi Prefecture Makino Botanical Garden |