Key to Phaeoclavulina species in China
1. Species pileate ....................................................................................................................................................................................2
- Species ramarioid ...............................................................................................................................................................................3
2. Hymenium violet.................................................................................................................................................................. P. grandis
- Pileus green ............................................................................................................................................................................ P. viridis
3. Spore spines connected into circular to semi-circular ridges ............................................................................................... P. decolor
- Spore spines not connected into circular to semi-circular ridge.........................................................................................................4
4. Crystals present in trama or adhering to rhizomorph hyphae.............................................................................................................5
- Crystals absent in trama or adhering to rhizomorph hyphae..............................................................................................................6
5. Basidiomata bruising green ................................................................................................................................................. P. flaccida
- Basidiomata not bruising green ........................................................................................................................................ P. eumorpha
6. Spores verrucose.................................................................................................................................................................................7
- Spores echinulate................................................................................................................................................................................8
7. Basidiomata bruising olive or green on handling or weathering......................................................................................... P. abietina
- Basidiomata not bruising olive or green on handling or weathering.................................................................................. P. sikkimia
8. Hyphae with H-connection................................................................................................................................................... P. zippelii
- Hyphae without H-connection............................................................................................................................................................9
9. Basidiomata branches or tip green or blue .......................................................................................................................................10
- Basidiomata branches or tip orange or red.......................................................................................................................................11
10. Spores <10 µm long ......................................................................................................................................................... P. mutabilis
- Spores> 10 µm long ........................................................................................................................................................................12
11. Spores> 15 µm long ..................................................................................................................................................... P. macrospora
- Spores <15 µm long ........................................................................................................................................................................13
12. Basidiomata tall, tips blue .......................................................................................................................................... P. cyanocephala
- Basidiomata short, tips copper-green .............................................................................................................................. P. aeruginea
13. Branch apices orange to red .............................................................................................................................................................14
- Branch apices white to silvery, gray-yellow, gray-brown, yellow to brown, or dark olive-yellow .................................................15
14. Basidiomata stipe long, acute spines ...................................................................................................................................... P. cokeri
- Basidiomata stipe short, volcanic spines .................................................................................................................... P. cinnamomea
15. Basidiomata> 11 cm tall................................................................................................................................................. P. campestris
- Basidiomata <11 cm tall...................................................................................................................................................................16
16. Hymenium amphigenous................................................................................................................................................... P. capucina
- Hymenium unilateral........................................................................................................................................................................17
17. Spores 4.5–6.5 µm long, basidia 25–36 µm long.................................................................................................................... P. curta
- Spores 7–11 µm long, basidia 40–50 µm long............................................................................................................... P. longicaulis