Megasporia (Lira, 2021)

Melo, Ireneia, Salcedo, Isabel, Garcia, Cesar A. & Olariaga, Ibai, 2023, Two new species of resupinate poroid fungi (Basidiomycota, Polyporaceae) from São Tomé and Príncipe Archipelago, Phytotaxa 607 (1), pp. 41-56 : 53

KEY 1. World provisional key of Megasporia (sensu Lira et al. 2021)

1. Dendrohyphidia present......................................................................................................................................................................2

- Dendrohyphidia absent.......................................................................................................................................................................3

2. Pores 1–2 per mm, basidiospores 4.5–5 µm wide............................................................................................................ M. insularis

- Pores 2–4 per mm, basidiospores 5–7 µm wide................................................................................................................................... .................................................................. M. cavernulosa (Berk.) C.R.S. Lira & Gibertoni in Lira et al., Mycosphere 12(1): 1277

3. Hyphal pegs present ...........................................................................................................................................................................4

- Hyphal pegs absent.............................................................................................................................................................................5

4. Pores 2–3 per mm, basidiospores 20–26 × 6–9 µm ............................................................................................................................. ....................................................................................... M. mexicana (Ryvarden) Gibertoni in Lira et al., Mycosphere 12(1): 1278

- Pores 3–4 per mm, basidiospores 10–12 × 2.5–3 µm .......................................................................................................................... ......................................................... M. cylindrospora (Ryvarden) C.R.S. Lira & Gibertoni in Lira et al., Mycosphere 12(1): 1277

5. Pores 0.5–2 per mm............................................................................................................................................................................6

- Pores 3–4 per mm............................. M. variabilicolor C.R.S. Lira & Gibertoni in Lira et al., Lira et al., Mycosphere 12(1): 1274

6. Pore surface ash grey with lavender tints, pores 0.5–1 per mm ........................................................................................................... ............................................... M. hexagonoides (Speg.) B.K.Cui, Y.C. Dai & Hai J. Li , in Li & Cui, Mycologia 105(2): 375. 2013

- Pore surface different colour, pores 1–2 per mm ...............................................................................................................................7

7. Skeletal hyphae dextrinoid, basidiospores 10–12 × 3.5–4 µm............................................................................................................. .................... M. amazonica (Gomes-Silva, Ryvarden & Gibertoni) C.R.S. Lira & Gibertoni in Lira et al., Mycosphere 12(1):1276

- Skeletal hyphae indextrinoid, basidiospores 15–19 × 6–8 µm............................................................................................................. ......................................... M. anoectopora (Berk. & M.A. Curtis) C.R.S. Lira & Gibertoni in Lira et al., Mycosphere 12(1): 1276