KEY TO THE NEOTROPICAL SPECIES OF TROPICOPORUS

1. Basidioma resupinate................................................................................................................................... 2

— Basidioma pileate ........................................................................................................................................ 3

2. Basidioma, thick, stratified; pores 5-7/mm; basidiospores 4-5 Μm long .......................................................... ............................................................................................................. T. stratificans G.Coelho & Yurchenko

— Basidioma thin, effused; pores 7-10/mm; basidiospores 3-4 Μm long ............................................................. .......................................................................... T. tropicalis (M.J.Larsen & Lombard) L.W.Zhou & Y.C.Dai

3. Hymenial setae absent .............................. T. nullisetus Xavier de Lima, V.R.T. Oliveira & Gibertoni, sp. nov.

— Hymenial setae present, scanty to abundant ................................................................................................ 4

4. Biding-like hyphae present in the context and tube trama ........................................................................... 5

— Biding-like hyphae absent ........................................................................................................................... 6

5. Basidiospores 4-5 Μm long; pores 5-7/mm .................... T. dependens (Murrill) L.W.Zhou, Y.C.Dai & Vlasák

— Basidiospores 6-7 Μm long; pores 2-3/mm ..................................................................................................... ................................................................ T. sideroxylicola (Vlasák & Y.C.Dai) L.W.Zhou, Y.C.Dai & Vlasák

6. Pores 7-9/mm; setae 10-25 Μm long............................................................................................................ 7

— Pores ≤ 7/mm; setae 16-43 Μm long, mostly> 20 Μm long.......................................................................... 8

7. Basidiomata up to 4 cm thick at base, forming a dark crust on the pileus ....................................................... ............................................................................................ T. guanacastensis L.W. Zhou, Y.C. Dai & Vlasák

— Basidiomata thin, up to 0.9 cm thick at base, not forming a dark crust .......................................................... ............................. T. flabellatus V.R.T. Oliveira, J.R.C. Oliveira-Filho, Xavier de Lima & Gibertoni, sp. nov.

8. In seasonally dry subtropical forest; on Cordia americana ................ T. drechsleri Salvador-Montoya & Popoff

— Tropical and subtropical; host various.......................................................................................................... 9

9. Pores 4-5/mm ...................................... T. pseudolinteus (Vlasák & Y.C. Dai) L.W. Zhou, Y.C. Dai & Vlasák

— Pores 5-7/mm ........................................................................................................................................... 10

10. Black line absent in the context; setae 27-43 long........................................................................................... ................................................................ T. cubensis (Y.C.Dai, Decock & L.W.Zhou) L.W.Zhou & Y.C.Dai

— Black line present in the context; setae 22-30 long ..... T. linteus (Berk. & M.A.Curtis) L.W.Zhou & Y.C.Dai