Ten taxa of Carex (Cyperaceae) described by Dr. Shigeo Akiyama are lectotypified based on the specimens mainly preserved in the Herbarium of the Hokkaido University Museum (SAPS). They are C. flavocuspis Franch. & Sav. var. iwatensis Akiyama, C. foliosissima F.Schmidt var. albo-mediana Akiyama, C. forficula Franch. & Sav. var. angustiflora Akiyama & Suto, C. geantha Ohwi var. pubescens Akiyama, C. karashidaniensis Akiyama, C. kinpokusanensis Akiyama, C. maximowiczii Miq. vars. minor Akiyama and pallida Akiyama, C. oxyandra (Franch. & Sav.) Kudô var. globosa Akiyama, and C. siderosticta Hance var. variegata Akiyama.
