Eritrichium aktonense, a new synonym of E. subjacquemontii (Boraginaceae) Author Hao, Jia-Chen 0000-0001-9197-9805 Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China & haojiachen @ ibcas. ac. cn; https: // orcid. org / 0000 - 0001 - 9197 - 9805 haojiachen@ibcas.ac.cn Author Wang, Ying-Wei 0000-0002-2393-3917 Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China & ywwang @ ibcas. ac. cn; https: // orcid. org / 0000 - 0002 - 2393 - 3917 ywwang@ibcas.ac.cn Author Liu, Quan-Ru 0000-0003-4270-4746 College of Life Sciences, Beijing Normal University, Beijing 100875, China & liuquanru @ bnu. edu. cn; https: // orcid. org / 0000 - 0003 - 4270 - 4746 liuquanru@bnu.edu.cn text Phytotaxa 2021 2021-12-30 529 1 119 124 journal article 2817 10.11646/phytotaxa.529.1.10 51ff7b87-8547-4404-872f-ed0090a1bca8 1179-3163 5814156 Eritrichium subjacquemontii Popov in Komarov (1953: 709) Type :— TAJIKISTAN . Pamir , 3500 m , 13 July 1931 , Lipshits 451 . ( holotype MW-0594327!, isotype MW-0594328!) = Eritrichium aktonense Y.S.Lian & J.Q.Wang in Wang et al . (1980: 43) . syn . nov . Type :— CHINA . Aketao , 3580m , 29 June 1978 , Northwest Inst. Bot. Xinjiang Exped. 751 ( holotype NWTC-333228!, isotype NWTC-333227!) . Distribution and habitat: — Eritrichium subjacquemontii grows on rocky slopes or crevices, from 2700 to 3900 m . According to our current knowledge, E. subjacquemontii is widely distributed in the Pamirs, central Asia. FIGURE 1 . Holotype of Eritrichium subjacquemontii ( Lipshits 451 , MW-0594327, available at https://plant.depo.msu.ru/public/scan. jpg?pcode=MW0594327) FIGURE 2 . Holotype of Eritrichium aktonense ( Northwest Inst. Bot. Xinjiang Exped. 751 , NWTC-333228, photographed by Yi He) FIGURE 3 . Nutlets morphology of Eritrichium subjacquemontii . A, E. Nutlets with spinules and densely pubescent in both surfaces (type 1): A. dorsal view, E. ventral view; B. F. Nutlets with short separated glochids and densely pubescent in both surfaces (type 2): B. dorsal view, F. ventral view; C. G. Nutlets with longer united glochids and slightly pubescent in both surfaces (type 3): C. dorsal view, G. ventral view; D. H. Nutlets with longest united glochids and almost glabrous in both side (type 4): D. dorsal view, H. ventral view. I.–L. Nutlets of E. aktonense from holotype (Northwest Inst. Bot. Xinjiang Exped. 751, NWTC-333228): I. J. Nutlets with short separated glochids along the margin and pubescent in both surfaces, I. dorsal view, J. ventral view; K. L. Nutlets with longer united glochids, glabrous in adaxial side and pubescent in abaxial side, K. dorsal view, L. ventral view. (Bar = 1 mm). Phenology: —Flowering and fruiting from June to August. Taxonomic notes: — Eritrichium subjacquemontii can be easily distinguished from related species of Eritrichium by obviously white swelling attachment scars of nutlets. Additional specimens examined: — CHINA . Xinjiang : Aketao , 18 July 2016 , J . C . Hao & Y . Zhou 16802 , 16803 , 16804 (all BNU !); Tashikuergan , 19 July 2016 , J . C . Hao & Y . Zhou 16815 , 16816 , 16817 , 16818 , 16820 , 16822 , 16823 , 16824 , 16826 , 16829 (all BNU !) . TAJIKISTAN . Gorno-Badakhshan , Pamir , 8 September 1955 , Ikonnikov s.s. 5396 ( NSK !) .