Hymenochaete

He, Shuang-Hui & Li, Hai-Jiao, 2012, Hymenochaete (Hymenochaetales, Basidiomycota) in China. 6. H. fissurata sp. nov. from Yunnan and Sichuan Provinces, Phytotaxa 73 (1), pp. 31-36 : 34-35

Key to the species of Hymenochaete from Yunnan and Sichuan Provinces in China

So far, 31 species of Hymenochaete including the new species described in this paper have been recorded from Yunnan and Sichuan Provinces. An identification key to all these species is provided as follows:

1. Hymenophore lamellate or poroid ................................................................................................................................ 2

– Hymenophore smooth................................................................................................................................................... 3

2. Hymenophore lamellate ...................................................................................................................... H. cyclolamellata

– Hymenophore poroid .................................................................................................................................. H. xerantica

3. Hyphidia numerous....................................................................................................................................................... 4 – Hyphidia absent or rare............................................................................................................................................... 10

4. Hyphidia never branched.............................................................................................................................................. 5

– Hyphidia branched ........................................................................................................................................................ 6

5. Basidiocarps resupinate; hyphidia smooth ..................................................................................................... H. innexa

– Basidiocarps effused-reflexed to pileate; hyphidia encrusted .................................................................. H. luteobadia

6. Hyphidia acanthoid (acanthohyphidia) ........................................................................................................... H. murina

– Hyphidia not acanthoid................................................................................................................................................. 7

7. Basidiospores> 5 µm long ........................................................................................................................................... 8

– Basidiospores <5 µm long ........................................................................................................................................... 9

8. Dendrohyphidia arbusculoid; tropical species .............................................................................................. H. floridea

– Dendrohyphidia not arbusculoid; temperate species .............................................................................. H. sphaericola

9. Cortex present; setae 25–50 × 5–8 µm; basidiospores 2.8–3.5 × 2–2.5 µm ....................................... H. rufomarginata

– Cortex absent; setae 50–90 × 7–11 µm; basidiospores 3.2–5 × 1.8–2.8 µm .................................................. H. tropica

10. Basidiocarps effused-reflexed to pileate .................................................................................................................... 11

– Basidiocarps strictly resupinate .................................................................................................................................. 20

11. Cortex absent .............................................................................................................................................................. 12

– Cortex present............................................................................................................................................................. 15

12. Basidiospores <3.5 µm long ...................................................................................................................................... 13

– Basidiospores> 3.5 µm long ...................................................................................................................................... 14

13. Setal layer with horizontal agglutinated hyphae .................................................................................. H. subferruginea

– Setal layer without horizontal agglutinated hyphae ........................................................................................ H. adusta

14. Basidiocarps effused-reflexed, woody hard; setal layer thickening ............................................................. H. unicolor

– Basidiocarps pileate, coriaceous; setal layer not thickening ....................................................................... H. rheicolor

15. Setae encrusted with crystals; basidiospores> 7 µm long ...................................................................... H. megaspora

– Setae smooth, basidiospores <7 µm long .................................................................................................................. 16

16. Hyphae and hymenial cells encrusted .................................................................................................... H. yunnanensis

– Hyphae and hymenial cells smooth ............................................................................................................................ 17

17. Basidiocarps densely cracked, broadly effused to effused-reflexed ............................................................ H. fissurata

– Basidiocarps not cracked, effused-reflexed to pileate ................................................................................................ 18

18. Basidiospores> 4 µm long ....................................................................................................................... H. rubiginosa

– Basidiospores <4 µm long ......................................................................................................................................... 19

19. Submonilioid hyphal ends present in hymenium ............................................................................................ H. villosa

– Submonilioid hyphal ends absent in hymenium .............................................................................. H. ochromarginata

20. Setae with 1–3 teeth ................................................................................................................................. H. separabilis

– Setae without teeth...................................................................................................................................................... 21

21. Setae blunt, spathulate .............................................................................................................................. H. spathulata

– Setae acute, not spathulate .......................................................................................................................................... 22

22. Setae with encrustation ............................................................................................................................................... 23

– Setae smooth ............................................................................................................................................................... 27

23. Setae encrusted with crystals ...................................................................................................................................... 24

– Setae encrusted with yellowish brown resinous granules........................................................................................... 25

24. Basidiospores subglobose .................................................................................................................... H. sphaerospora

– Basidiospores cylindrical .................................................................................................................................. H. legeri

25. Hyphal layer absent; setae <50 µm long; basidiospores <4.5 µm long .......................................................... H. minor

– Hyphal layer present; setae> 50 µm long; basidiospores> 4.5 µm long................................................................... 26

26. Basidiospores 4.8–6 × 2.3–3.3 µm ...................................................................................................... H. rhabarbarina

– Basidiospores 6–7 × 4–5 µm .......................................................................................................... H. rhododendricola

27. Cortex present .................................................................................................................................................... H. fulva

– Cortex absent .............................................................................................................................................................. 28

28. Basidiospores> 7 µm long ......................................................................................................................................... 29

– Basidiospores <7 µm long ......................................................................................................................................... 30

29. Crystals present in setal layer and subhymenium .................................................................................... H. contiformis

– Crystals absent .......................................................................................................................................... H. longispora

30. Setae 70–120 × 5–9 µm; basidiospores 4.5–6.5 × 1.8–2.8 µm ............................................................. H. cinnamomea

– Setae 30–45 × 5–7 µm; basidiospores 3.2–4 × 1.8–2.3 µm ........................................................................ H. anomala