The other 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 laxum / Kokeotogiri