Identification key to the accepted species of Luteoporia

1. Hymenophore poroid..........................................................................................................................................................................2

- Hymenophore odontoid ......................................................................................................................................................................4

2. Margin cottony or abrupt; tissues turning purple in KOH..................................................................................................................3

- Margin fimbriate; tissues turning distinctly pink in KOH............................................................................................. L. citriniporia

3. Margin cottony to rhizomorphic; fusoid cystidioles occasionally present; basidiospores oblong-ellipsoid, 3.9–5 × 1.8–2.2 µm ...... .................................................................................................................................................................................. L. albomarginata

- Margin abrupt; cystidioles absent; basidiospores ellipsoid, 2.9–3.8 × 1.9–2.4 µm ....................................................... L. tenuissima

4. Hymenophore golden yellow; margin fibrillose...................................................................................................................... L. lutea

- Hymenophore straw-colored; margin narrow.................................................................................................................. L. straminea