Tremella

Kout, Jiří, Quijada, Luis & Beltrán-Tejera, Esperanza, 2015, A new species of Tremella from Macaronesia, Phytotaxa 226 (1), pp. 75-82 : 80-81

Key to the brownish Tremella with basidiomata greater than 1 cm diam. from Europe and Macaronesia.

(Basidiospores dimensions are from Jülich 1984, Chen 1998, Roberts & Spooner 2004)

1. Basidiomata heterogeneous with two layers ...................................................................................................................... T. steidleri

1. Basidiomata homogenous, without differentiated core .................................................................................................................... 2.

2. Basidiomata associated with Pyrenomycetes; lacking foliose lobes................................................................................................ 3.

2. Basidiomata not associated with Pyrenomycetes; with foliose lobes .............................................................................................. 5.

3. Basidiomata hyaline, greyish, brownish, pustulate, hemisphaerical (on Diatrype ) ...................................................... T. indecorata

3. Basidiomata generally darker, differently shaped (not pustulate), on different host........................................................................ 4.

4. Basidiomata with finger-like lobes; brown-orange (on Biscogniauxia )......................................................................... T. laurisilvae

4. Basidiomata tuberculate; reddish brown to blackish (on Diaporthe )............................................................................ T. moriformis

5. Basidiomata yellow-brown to rusty (Azores and America) ............................................................................................ T. coffeicola 5. Basidiomata without yellow-brown to rusty coloration ................................................................................................................... 6.

6. Conidiogenous cells present, basidiomata 5 cm in diam., reddish brown, basidiospores ellipsoid 6.5–9 × 4.5–6.5 μm... T. vasifera

6. Conidiogenous cells absent .............................................................................................................................................................. 7.

7. Basidiomata reddish dark brown, over 10 cm in diam., basidiospores subglobose to widely ellipsoid 7–9(–13) × 5–8 μm .............. ............................................................................................................................................................................................ T. foliacea

7. Basidiomata greyish brown to blackish, 2 cm in diam, basidiospores widely ellipsoid 6–7 × 5–6.5 μm............... T. griseobrunnea