Micropsalliota species

Key to Micropsalliota species distributed in China

1. Pileus white to dirty white..................................................................................................................................................................2

- Pileus distinctly colored or covered with numerous colored fibrils .................................................................................................16

2. Basidiospores in average shorter than 5.5 μm....................................................................................................................................3

- Basidiospores in average longer than 5.5 μm.....................................................................................................................................7

3. Cheilocystidia bifid with two toe-like subcapitate lobes....................................................................................................... M. bifida View in CoL

- Not as above .......................................................................................................................................................................................4

4. Basidiospores ovoid in face view, amygdaliform in profile view ................................................................................. M. ovalispora View in CoL - Not as above .......................................................................................................................................................................................5

5. Cheilocystidia non-capitate ..................................................................................................................................... M. pseudoarginea View in CoL

- Cheilocystidia tibiiform or lageniform, capitate at apex ....................................................................................................................6

6. Pileus < 5 mm in diameter, hyphae of pileus squamules hyaline........................................................................ M. pseudodelicatula View in CoL

- Pileus> 5 mm in diameter, hyphae of pileus squamules has membranous pigments............................................................. M. nana

7. Pileus mainly < 10 mm in diameter.....................................................................................................................................................8

- Pileus mainly> 10 mm in diameter...................................................................................................................................................12

8. Cheilocystidia two types, tibiiform or forked with capitate or subacute apex ...................................................................... M. minor View in CoL

- Not as above .......................................................................................................................................................................................9

9. Cheilocystidia utriform...................................................................................................................................................... M. tenuipes View in CoL

- Cheilocystidia capitate at apex .........................................................................................................................................................10

10. Spores 8.0–9.0 μm in length............................................................................................................................................... M. bispora

- Spores shorter than 8.0 μm...............................................................................................................................................................11

11. Stipe less than 20 mm long, and the annulus is superior and membranous ................................................................... M. delicatula View in CoL

- Stipe up to 30 mm long, and annulus absent ................................................................................................................. M. albofelina View in CoL

12. Pileus 20–80 mm in diameter ................................................................................................................................. M. megarubescens View in CoL

- Pileus mainly < 20 mm in diameter...................................................................................................................................................13

13. Pleurocystidia present.................................................................................................................................................... M. longicystis

- Pleurocystidia absent ........................................................................................................................................................................14

14. Pileipellis hyphae with incrusted pigments ........................................................................................................ M. dentatomarginata View in CoL

- Pileipellis hyphae with vacuolar pigments .......................................................................................................................................15

15. Pileus not stains .................................................................................................................................................................. M. subalba View in CoL

- Pileus stains reddish brown when bruised or cut............................................................................................... M. rubrobrunnescens View in CoL

16. Pleurocystidia present.......................................................................................................................................................................17

- Pleurocystidia absent ........................................................................................................................................................................18

17. Cheilocystidia cylindrical to subclavate.................................................................................................................... M. digitatocystis View in CoL

- Cheilocystidia pyriform to subglobose.................................................................................................................... M. appendiculata

18. Pileus mainly < 10 mm in diameter...................................................................................................................................................19

- Pileus mainly> 10 mm in diameter...................................................................................................................................................23

19. Pileus brown to dark brown........................................................................................................................................... M. megaspora View in CoL

- Pileus pink, red to violet-red ............................................................................................................................................................20

20. Fibrils on the pileus composed of abundant globe cells............................................................................................. M. globovelveta

- Fibrils on the pileus composed of hyphae ........................................................................................................................................21

21. Cheilocystidia hyphoid, often forked, up to 60 μm long......................................................................................... M. wuyishanensis View in CoL

- Not as above .....................................................................................................................................................................................22

22. Stipe dirty white with pink tone, cheilocystidia without deposits................................................................................ M. cf. roseipes View in CoL

- Stipe white, cheilocystidia covered by light brown deposits ................................................................................... M. rufosquarrosa View in CoL

23. Pileus> 20 mm in diameter...............................................................................................................................................................24

- Pileus < 20 mm in diameter...............................................................................................................................................................32

24. Basidiospores less than 6.0 μm long ................................................................................................................. M. pseudoglobocystis View in CoL

- Basidiospores up to 7.0 μm long or longer.......................................................................................................................................25

25. Stipe less than 30 mm long, cheilocystidia cylindrical to subclavate, 12–33 μm long............................................... M. jiangxiensis

- Stipe up to 50 mm long or longer, cheilocystidia not as above........................................................................................................26

26. Basidiospores mainly wider than 4.0 μm .........................................................................................................................................27

- Basidiospores mainly narrower than 4.0 μm....................................................................................................................................29

27. Spores up to 9.0 μm, cheilocystidia broadly clavate to clavate...................................................................................... M. gigaspora

- Spores mainly less than 8.0 μm, cheilocystidia not as above...........................................................................................................28

28. Cheilocystidia clavate to clavate-capitate ...................................................................................................................... M. squarrosa

- Cheilocystidia various, tibiiform, capitate, subhypoid, rarely fork................................................................................... M. vulgaris

29. Flesh stains red when bruised or cut.............................................................................................................................. M. furfuracea View in CoL

- Flesh stains yellow, reddish-brown or blue when bruised or cut .....................................................................................................30

30. Flesh stains blue ............................................................................................................................................................ M. ferruginea

- Flesh stains yellow or reddish-brown...............................................................................................................................................31

31. Pileus is conspicuously obtuse umbo; squamules light brown, yellowish brown, or brown ......................................... M. umbonata

- Pileus is slightly or not umbonate, squamules purple to purplish brown, greyish brown or reddish-brown ............... M. globocystis View in CoL

32. Veil cortinate..................................................................................................................................................................... M. cortinata View in CoL

- Veil membranous ..............................................................................................................................................................................33

33. Basidiomata brown...........................................................................................................................................................................34

- Basidiomata violet-red......................................................................................................................................................................35

34. Spores shorter than 5.5 μm......................................................................................................................................... M. arginophaea View in CoL

- Spores up to 7.5 μm......................................................................................................................................................... M. fimbriata

35. Cheilocystidia broadly clavate or seldom subcapitate............................................................................... M. lateritia var. vinaceipes View in CoL

- Cheilocystidia versiform, ventricose to irregularly tibiiform, capitate or subcapitate with long, narrow neck................. M. gracilis View in CoL