Phaeographopsis species

Kalb, Jutarat & Kalb, Klaus, 2017, New lichen species from Thailand, new combinations and new additions to the Thai lichen biota, Phytotaxa 332 (2), pp. 141-156 : 148

Key to the known Phaeographopsis species

1. Thallus in section K+ bright yellow efflux, producing small crystals immediately or after up to one minute, salazinic acid present as major compound, Ascospores 8–12 × 4–5 μm, palaeotropical ..................................................... P. palaeotropica Kalb & Frisch

- Thallus in section K+ bright yellow efflux, producing red needle-shaped crystals immediately or after up to one minute, norstictic acid present as major compound..................................................................................................................................................2.

2. Ascospores 14–18 × 4.5–5.5 μm, neotropical ....................................................................................................... P. neotropica Kalb

- Ascospores 12–14 × 4–5 μm, palaeotropical .......................................................... P. indica (Patw. & Nagarkar) Sipman & Aptroot