Trechispora

Zong, Tong-Kai, Liu, Chao-Mao, Wu, Jian-Rong & Zhao, Chang-Lin, 2021, Trechispora daweishanensis and T. xantha spp. nov. (Hydnodontaceae, Trechisporales) found in Yunnan Province of China, Phytotaxa 479 (2), pp. 147-159 : 157

Key to the known species of Trechispora in China

1. Basidiospores smooth.........................................................................................................................................................................2

1. Basidiospores aculeate, verrucose or ornamented..............................................................................................................................5

2. Ampullate hyphae> 5 μm in width, basidiospores angular ................................................................................. T. subsphaerospora

2. Ampullate hyphae <5 μm in width, basidiospores ellipsoid .............................................................................................................3

3. Basidiospores thick-walled.............................................................................................................................................. T. cohaerens

3. Basidiospores thin-walled ..................................................................................................................................................................4

4. Hymenial surface tuberculate, white ....................................................................................................................... T. daweishanensis

4. Hymenial surface smooth, buff ............................................................................................................................................. T. xantha

5. Hyphal system dimitic......................................................................................................................................................... T. dimitica

5. Hyphal system monomitic..................................................................................................................................................................6

6. Hyphae without ampullate septa ........................................................................................................................................................7

6. Hyphae with ampullate septa..............................................................................................................................................................8

7. Basidiospores thin-walled, ovoid to subglobose ............................................................................................................... T. suberosa

7. Basidiospores thick-walled, ellipsoid........................................................................................................................... T. yunnanensis

8. Sphaerocysts present, hyphae inflated........................................................................................................................ T. hymenocystis

8. Sphaerocysts absent, hyphae uninflated .............................................................................................................................................9

9. Ampullate septa> 6 μm in width .....................................................................................................................................................10

9. Ampullate septa <6 μm in width .....................................................................................................................................................12

10. Basidiospores sparsely verrucose ............................................................................................................................. T. polygonospora

10. Basidiospores densely aculeate ........................................................................................................................................................11

11. Hyphae in subiculum thin-walled,> 3 μm in width.................................................................................................... T. candidissima

11. Hyphae in subiculum thick-walled, <3 μm in width ........................................................................................................ T. mollusca

12. Subhymenium with short celled hyphae...........................................................................................................................................13

12. Subhymenium with long celled hyphae ...........................................................................................................................................14

13. Basidiome thin, ochraceous.............................................................................................................................................. T. farinacea

13. Basidiome thick, dirty white to buff....................................................................................................................................... T. rigida

14. Basidia <10 μm in length ............................................................................................................................................. T. microspora

14. Basidia> 10 μm in length ................................................................................................................................................................15

15. Basidiospores thin-walled, <5 μm in length........................................................................................................................... T. nivea

15. Basidiospores thick-walled,> 5 μm in length ................................................................................................................ T. praefocata