The '7 Flowers of Autumn' (秋の七草):
💮bellflowers (桔梗 'kikyō')
💮bush clover (萩 'hagi')
💮miscanthus (尾花 'obana')
💮kudzu (葛 'kuzu')
💮large pink (撫子 'nadeshiko')
💮yellow valerian (女郎花 'ominaeshi')
💮boneset (藤袴 'fujibakama')
It is thought the origin of the 'Aki-no-Nanakusa' can be traced to 2 poems by Yamanoue-no-Okura (山上憶良/山於億良 660–733?).
Both are featured in the Man'yōshū (万葉集), the oldest extant collection of Japanese waka (poetry in Classical Japanese), compiled in the Nara period.