Ainsliaea polystachya (Asteraceae), a new species from Fujian, China based on morphological and molecular evidence Author Zhang, Mei-Jiao 0000-0003-4378-3538 School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China zmj 15102121103 @ 163. com; https: // orcid. org / 0000 - 0003 - 4378 - 3538 Author Su, Xiang-Xiu Fengyang Nursery, 137 East Wenhua Road, Pingnan County, Fujian, 352300 China Author An, Chang 0000-0002-7657-7936 College of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang road, Fuzhou, 350122 China ancher 0928 @ 163. com; https: // orcid. org / 0000 - 0002 - 7657 - 7936 Author Li, Hong-Qing 0000-0003-4378-3538 School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China zmj 15102121103 @ 163. com; https: // orcid. org / 0000 - 0003 - 4378 - 3538 Author Zhang, Zhen 0000-0003-0271-0973 College of Architecture and Urban Planning, Tongji University, 1239 Siping Road, Shanghai 200092, China zhang _ zhen @ tongji. edu. cn; https: // orcid. org / 0000 - 0003 - 0271 - 0973 zhang_zhen@tongji.edu.cn text Phytotaxa 2021 2021-04-22 497 3 277 284 http://dx.doi.org/10.11646/phytotaxa.497.3.6 journal article 4448 10.11646/phytotaxa.497.3.6 8d87034d-e5f4-44c7-a545-bf84081f3b6e 1179-3163 5424057 Key of species in the Clade B in the phylogenetic tree of Ainsliaea ( Fig. 1 ) 1. Leaf blades linear to elliptic, at least two times longer than wide, base cuneate to decurrent........................................................... 2 - Leaf blades ovate, cordiform to palmatifid, at most two times longer than wide, base ± cordate ..................................................... 5 2. Leaf blades linear to elliptic, apex acute, 1-nerved ............................................................................................................................ 3 - Leaf blades lanceolate, apex acuminate, 3-nerved ............................................................................................................................. 4 3. Leaf margins with 4 to 8 teeth on each side ............................................................................................................ Ainsliaea linearis - Leaf margins with 1 or 2 subterminal teeth on each side ........................................................................................ Ainsliaea walkeri 4. Capitula 1-flowered ....................................................................................................................................... Ainsliaea simplicissima - Capitula 3-flowered ............................................................................................................................................... Ainsliaea trinervis 5. Leaves lobed....................................................................................................................................................................................... 6 - Leaves not lobed................................................................................................................................................................................. 7 6. Blades palmately lobed; achenes hirsute.............................................................................................................. Ainsliaea apiculata - Blades shallowly pinnately lobed; achenes glabrous ................................................................................... Ainsliaea grossedentata 7. Indumentum well developed on rachis, petiole, and leaf margins ........................................................................ Ainsliaea fragrans - Indumentum sparse or absent on rachis, petiole, and leaf margins .................................................................................................... 8 8. Abaxial leaf surface green ...................................................................................................................... Ainsliaea macroclinidioides - Abaxial leaf surface red...................................................................................................................................................................... 9 9. Capitula 3-flowered, arranged in spikes.................................................................................................................. Ainsliaea gracilis - Capitula 1-flowered, arranged in open panicles............................................................................... Ainsliaea polystachya ( sp. nov. )