Pseudophialophora

1. Colony diameter ≥ 2.5 cm on PDA in the dark after 7 days at 25 C …………………………………………………………………………………… 2
1′. Colony diameter < 2.5 cm on PDA in the dark after 7 days at 25 C ………………………………………………………………………………….. 6

2. Conidia averaging ≥ 7.5 µm long …………………………………………………………………………………………………………………………. 3
2′. Conidia averaging < 7.5 µm long …………………………………………………………………………………………………………………………. 5

3. Colony dark green on PDA, associated with Eragrostis sp. …………………………… Pseudophialophora eragrostis (Type species)
3′. Colony greenish on PDA, associated with other hosts …………………………………………………………………………………………………. 4

4. Conidia 7.5–10.5 x 2.5–3.5 µm, associated with Panicum sp. …………………………………………………. Pseudophialophora panicorum
4′. Conidia 8–12 x 3–5 µm, associated with Dichanthelium acuminatum ………………………………………. Pseudophialophora magnispora

5. Colony dark green on PDA ……………………………………………………………………………………….. Pseudophialophora whartonensis
5′. Colony greenish on PDA ………………………………………………………………………………………………. Pseudophialophora dichanthii

6. Conidia averaging < 2.5 µm wide …………………………………………………………………………………………………………………………..7 
6′. Conidia averaging ≥ 2.5 µm wide ……………………………………………………………………………………………………………. 8

7. Colony sulphur yellow on PDA ……………………………………………………………………………………. Pseudophialophora angusta
7′. Colony dark grey on PDA …………………………………………………………………………………………………… Pseudophialophora  sorghi

8. Colony sulphur yellow on PDA, conidia 5.5–8 x 2.5–3.5 µm …………………………………………………. Pseudophialophora schizachyrii
8′. Colony yellowish on PDA, conidia 7.5–9.5 x 2.5–3.5 µm ……………………………………………………………….. Pseudophialophora tarda