Notes For Reference:-

Species, Varieties, or Forms in the Genus Cirsium:
Cirsium bitchuense / Bicchuuazami
Cirsium buergeri / Himeazami
Cirsium chokaiense / Choushuuazami
Cirsium congestissimum / Hittsukiazami
Cirsium indefensum / Togenashiazami
Cirsium indefensum./ Izumoazami
Cirsium japonicum v. japonicum/Noazami
Cirsium japonicum var. japonicum f. albiflorum / Shirobananoazami
Circium mirabile / Obakeazami
Cirsium japonicum var. okiense / Okinoazami
Cirsium japonicum var. vestitum /

Cirsium chokaiense is a perennial herb that stands erect, reaching 1-2m in height, with branching at the upper parts. The leaves on the stems gather in the middle parts, measuring 20-30cm in length, and are pinnately cleft into segments with sharp prickles on the margins. Red-purple flowers bloom diagonally downwards. As for radical leaves (rosette) on the ground, they have already gone by bloom time. Bloom time: August-September.