Key to 14 species of Panellus found in China 1. Basidiomata with lamellate hymenophore .........................................................................................................................................2 1. Basidiomata with poroid hymenophore..............................................................................................................................................7 2. Having bright white and bright light brown gloss at lamellar edge ......................................................................................... P. mitis 2. Not having any gloss at lamellar edge................................................................................................................................................3 3. Pileus usually> 20 mm ...................................................................................................................................................... P. opuntine 3. Pileus usually 6 μm in width, subglobose to globose .........................................................................................................8 7. Basidiospores mostly 6 μm in length ............................11 10. Basidiomata chalky, basidiospores mostly <6 μm in length ...........................................................................................................12 11. Stipe present ................................................................................................................................................................ P. bambusicola 11. Stipe absent.......................................................................................................................................................................................13 12. Pores 6–7 per mm; pleurocystidia absent..................................................................................................................... P. yunnanensis 12. Pores 8–10 per mm; pleurocystidia present................................................................................................................. P. minutissimus 13. Pleurocystidia and pileocystidia present .............................................................................................................................. P. alpinus 13. Pleurocystidia or pileocystidia absent ................................................................................................................................. P. pusillus

Published as part of Chen, Qian, Xu, Zhen-Zhen & Zhang, Qiu-Yue, 2023, Panellus microspermus sp. nov. (Agaricales, Basidiomycota) evidenced by the morphological characters and molecular phylogeny, pp. 16-28 in Phytotaxa 606 (1) on page 25, DOI: 10.11646/phytotaxa.606.1.2, http://zenodo.org/record/8202281