Key to Hohenbuehelia taxa known from China

1. Basidiomata small to medium, ≤ 2cm ................................................................................................................................................2

- Basidiomata medium to large,> 2cm ..................................................................................................................................................4

2. Pileus dark, dark brown to black, pleurocystidia present...................................................................................................................3

- Pileus white, dirty white or pale gray, pleurocystidia absent .............................................................................................. H. silvana

3. Pleurocystidia with brown metuloids ..................................................................................................................................... H. nigra

- Pleurocystidia with light yellow metuloids ................................................................................................................. H. unguicularis

4. Basidiomata with stipe .......................................................................................................................................................................5

- Basidiomata without stipe or with pseudo-stipe.................................................................................................................................7

5. Context cream to grayish orange, basidiospores globose......................................................................................... H. aurantiocystis

- Context white to pale, clamp connection present...............................................................................................................................6

6. Stipe sturdy and obvious, pileoleptocystidia absent....................................................................................................... H. cepistipes

- Stipe short, pileoleptocystidia present................................................................................................................................... H. grisea

7. Pileus surface smooth, without velutinous .........................................................................................................................................8

- Pileus surface with velutinous ............................................................................................................................................................9

8. Pileipellis with lanceolate cystidia ................................................................................................................................. H. petaloides

- Pileipellis with globose cystidia ......................................................................................................................... H. ingentimetuloidea

9. Basidiospores subglobose to globose ...............................................................................................................................................10

- Basidiospores elliptic........................................................................................................................................................................11

10. Basidiomata without stipe ............................................................................................................................................ H. longzhousis

- Basidiomata with pseudo-stipe........................................................................................................................................ H. angustata

11. Pileus surface with white or incanus velutinous, hygrophanous.................................................................................... H. reniformis

- Pileus surface with off-white velutinous ..........................................................................................................................................12

12. Pileus plane, with olivegreen velutinous ........................................................................................................................... H. olivacea

- Pileus margins inrolled, with grayish purple, grayish brown velutinous ................................................................... H. atrocoerulea