Tirpitzia meiguensis (Linaceae), a new species from southwest Sichuan (China) Author Xie, Da-Jun 0009-0008-4030-4718 Sichuan Academy of Forestry, 610081, Chengdu, People’s Republic of China. & 44629347 @ qq. com; https: // orcid. org / 0009 - 0008 - 4030 - 4718 44629347@qq.com Author Li, Jin-Xiao 0009-0000-7600-3329 Sichuan Academy of Forestry, 610081, Chengdu, People’s Republic of China. & 523140361 @ qq. com; https: // orcid. org / 0009 - 0000 - 7600 - 3329 523140361@qq.com Author Peng, Shu-Ming 0009-0009-5187-4676 Ecological Environment College, Chengdu University of Technology, 610059, Chengdu, People’s Republic of China. & pengshuming 06 @ cdut. edu. cn; https: // orcid. org / 0009 - 0009 - 5187 - 4676 pengshuming06@cdut.edu.cn Author Deng, Tan 0000-0002-4575-3298 Department of Biology, Zunyi Normal College, 563006, Zunyi, People’s Republic of China. & gzzydengtan @ 163. com; https: // orcid. org / 0000 - 0002 - 4575 - 3298 Author Wei, Ruo-Xun 0009-0000-0510-7470 Department of Biology, Zunyi Normal College, 563006, Zunyi, People’s Republic of China. & 187003032 @ qq. com; https: // orcid. org / 0009 - 0000 - 0510 - 7470 187003032@qq.com Author Dou, Quan-Li 0009-0003-8462-7774 Department of Biology, Zunyi Normal College, 563006, Zunyi, People’s Republic of China. & douquali @ 163. com; https: // orcid. org / 0009 - 0003 - 8462 - 7774 Author Zhang, Renbo 0000-0002-9860-5803 Department of Biology, Zunyi Normal College, 563006, Zunyi, People’s Republic of China. & ddzrb @ 126. com; https: // orcid. org / 0000 - 0002 - 9860 - 5803 text Phytotaxa 2023 2023-11-15 626 1 51 59 https://phytotaxa.mapress.com/pt/article/download/phytotaxa.626.1.6/51292 journal article 10.11646/phytotaxa.626.1.6 1179-3163 10150975 Key to Tirpitzia Species 1. Herb-like semi-shrub, leaf margin toothed, seeds without a membranous wing .......................................................... T. meiguensis 1. Subshrubs, shrubs, or small trees, leaf margin entire, seeds with a membranous wing 2. Corolla pink, lobes fused at the base forming a tube 2.8–3.3 cm long, styles 2, ovary 2- locular................................. T. bilocularis 2. Corolla white, lobes free, styles 4 or 5, ovary 4- or 5-locular 3. Styles 4, ovary 4-locular, leaves obovate, chartaceous to subcoriaceous........................................................................... T. sinensis 3. Styles 5, ovary 5-locular, leaves elliptic, chartaceous ......................................................................................................... T. ovoidea