Notes on Carex (Cyperaceae) from China (VII): new synonyms and imperfectly known species Author Jin, Shui-Hu 0000-0003-0334-6683 State Key Laboratory of Subtropical Silviculture / Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions / School of Forestry and Bio-Technology, Zhejiang A & F University, Lin’an, Hangzhou, Zhejiang, 311300, People’s Republic of China. & jsh 501 @ 163. com; https: // orcid. org / 0000 - 0003 - 0334 - 6683 Author Lu, Yi-Fei State Key Laboratory of Subtropical Silviculture / Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions / School of Forestry and Bio-Technology, Zhejiang A & F University, Lin’an, Hangzhou, Zhejiang, 311300, People’s Republic of China. & College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, People’s Republic of China. Author Chen, Wei-Jie 0000-0001-5186-0279 State Key Laboratory of Subtropical Silviculture / Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions / School of Forestry and Bio-Technology, Zhejiang A & F University, Lin’an, Hangzhou, Zhejiang, 311300, People’s Republic of China. & cwj 86948968 @ 163. com; https: // orcid. org / 0000 - 0001 - 5186 - 0279 Author Jin, Xiao-Feng 0000-0002-8195-6738 State Key Laboratory of Subtropical Silviculture / Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions / School of Forestry and Bio-Technology, Zhejiang A & F University, Lin’an, Hangzhou, Zhejiang, 311300, People’s Republic of China. & docxfjin @ 163. com; https: // orcid. org / 0000 - 0002 - 8195 - 6738 text Phytotaxa 2022 2022-01-13 531 1 54 62 journal article 2584 10.11646/phytotaxa.531.1.4 31ac53f0-8436-4f77-8738-6ff52a765502 1179-3163 5843515 Carex truncatigluma C.B. Clarke (1904: 315) . Type :— CHINA . Zhejiang , Ningpo [Ningbo], May 1891 , E. Faber 1541 ( holotype : K-000960799!). = Carex dolichogyne T. Koyama (1956: 164) . syn. nov. Type :— CHINA . Hunan , Mt. Yolu-shan [Mt. Yuelu], 15 May 1912 , S. Yamazaki 31 ( holotype : TI!). = Carex gracilispica Hayata (1921: 62) . Type :— CHINA . Taiwan , Hoozan , 9 Apr. 1916 , B. Hayata s.n. ( holotype : TI!). Based on the specimen S. Yamazaki 31 , collected from Mt. Yuelu of Changsha in Hunan , Koyama (1956: 315) described C. dolichogyne as a new species. He distinguished it from Carex formosensis H. Lév. & Vaniot (in Léveillé, 1905: 216 , placed in Mitrata clade in Roalson et al. 2021) in having rather sparsely flowered pistillate spikes, and longer (ca. 4.5 mm ) utricles. In the protologue, Koyama also considered that his new species was similar to C. ligata Boott (in Bentham, 1861: 402, placed in Truncatigluma clade in Roalson et al. 2021), but differed from it by its shorter staminate spikes (ca. 1.5 cm long) and longer utricles. Compared with other species in sect. Lageniformes (Ohwi, 1936: 340) Nelmes (1951: 366) , Carex dolichogyne has the nutlets with a distinct, 0.7–0.8 mm long, cylindric neck at the apex, which is consistent to those of C. truncatigluma (nutlet necks cylindric, 0.5–1 mm long) ( Figure 3 ). Thus, we reduced C. dolichogyne to a synonym of C. truncatigluma .