Roscoea scillifolia f. atropurpurea

"Roscoea scillifolia" is a perennial herbaceous plant occurring in Yunnan in China. Most members of the ginger family, to which it belongs, are tropical, but like other species of "Roscoea", "R. scillifolia" grows in much colder mountainous regions. As of 2013, the species is only known in cultivation and may be extinct in the wild.