Ottelia songmingensis, a new rank and combination of Hydrocharitaceae from China Author Li, Zhi-Zhong Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China & Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, China Author Wang, Qing-Feng 0000-0001-9143-8849 Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, China & qfwang @ wbgcas. cn; https: // orcid. org / 0000 - 0001 - 9143 - 8849 qfwang@wbgcas.cn Author Chen, Jin-Ming 0000-0002-3425-5939 Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China & jmchen @ wbgcas. cn; https: // orcid. org / 0000 - 0002 - 3425 - 5939 jmchen@wbgcas.cn text Phytotaxa 2022 2022-07-07 554 1 101 102 http://dx.doi.org/10.11646/phytotaxa.554.1.9 journal article 93892 10.11646/phytotaxa.554.1.9 6d96cc5b-ebde-4251-8fd0-f00018fe2cd0 1179-3163 6809865 Ottelia songmingensis (Z.T. Jiang, H. Li & Z.L. Dao) Z.Z. Li, Q.F. Wang & J.M. Chen , stat. & comb. nov. Basionym:— Ottelia acuminata (Gagnepain) Dandy var. songmingensis Z.T.Jiang, H.Li & Z.L.Dao (2005: 425) Type:— CHINA . Yunnan : Songming County , Heilongtan Spring , elev. ca. 1965 m , on slowly flowing ditches, from 40 cm to 1 m or more deep, 21 August 2003 , Z. T. Jiang & Z. L. Dao 221 ( ♂ , holotype KUN!); Z. T. Jiang & Z. L. Dao 222 ( ♀ , paratype KUN!) Distribution and habitat:— Ottelia songmingensis presently is only recorded from Songming County, Yunnan Province , China . It grows along streams, where the water depth is from 40 cm to 1 m or deeper. Note:— This species is close to Ottelia guanyangensis and O. fengshanensis but differs in owing unisexual flowers, long banded leaf and unwinged fruit.