Ainsliaea, Candolle, 1838

Zhang, Mei-Jiao, Su, Xiang-Xiu, An, Chang, Li, Hong-Qing & Zhang, Zhen, 2021, Ainsliaea polystachya (Asteraceae), a new species from Fujian, China based on morphological and molecular evidence, Phytotaxa 497 (3), pp. 277-284 : 283

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.)

Figures

FIGURE 1. Bayesian phylogenetic tree based on three concatenated loci (ITS+ETS+ndhF). The posterior probability (PP) values are listed above the branches, the maximum likelihood bootstrap supports (MLBS) and the maximum parsimony bootstrap supports (MPBS) below the branches.