Species in the genus Hypericum:

Hypericum asahinae / Daisen'otogiri
Hypericum ascyron / Tomoesou
Hypericum erectum / Otogirisou
Hypericum japonica / Himeotogiri
Hypericum laxum / Kokeotogiri
Hypericum oliganthum / Azeotogiri
Hypericum pseudopetiolatum / Sawaotogiri

Hypericum pseudopetiolatum / Sawaotogiri サワオトギリ

Hypericum pseudopetiolatum, a perennial 15-40cm in height, inhabits the water's edges or wetlands in mountainous regions. Leaves are opposite, obovate or oblong, 2-3.5cm long, with many pale dots on the surface and dark dots on the margins. Stem tops bear cymose yellow flowers. Bloom time: July-August.