Carbacanthographis species

Jiang, Shu-Hao, Hao, Cheng-Yue, Zhao, Xin & Jia, Ze-Feng, 2024, New species and record in the genus Carbacanthographis (lichenized Ascomycota, Graphidaceae) from China, Phytotaxa 670 (4), pp. 285-292 : 291

Key to all the known Carbacanthographis species from China

1. Excipulum laterally carbonized..........................................................................................................................................................2

– Excipulum completely carbonized .....................................................................................................................................................3

2. Ascospores transversely septate, 5–9-septate, 22–37 × 5–8 μm; stictic acid..... C. iriomotensis (M. Nakan.) M. Nakan. & Kashiw.

– Ascospores small, submuriform, 3–4 × 0–1-septate, 12.5–20 × 5–7.5 μm; salazinic, protocetraric and norstictic acids ................... .................................................................................................................................................... C. marcescens (Fée) Staiger & Kalb

3. Ascospores transversely septate .........................................................................................................................................................4

– Ascospores submuriform or muriform ...............................................................................................................................................5

4. Ascospore 5–8-septate, 20–25 × 6–8 μm; protocetraric acid and lichexanthone............ C. chionophora (Redinger) Staiger & Kalb

– Ascospores 12–16-septate, 45–55 × 8–10 μm; norstictic acid ...................................................... C. aptrootii Feuerstein & Lücking

5. Protocetraric acid ...............................................................................................................................................................................6

– Salazinic and norstictic (trace) acids; ascospores small, submuriform, 3–4 × 0–1-septate, 12–13 × 7–8 μm..................................... ..................................................................................................................................................... C. aggregata Feuerstein & Lücking

6. Ascospores small, submuriform, 4–6 × 0–1-septate, 21–25 × 7–8 μm................................ C. yunnanensis Shu H. Jiang & Z.F. Jia

– Ascospores large, muriform, 16–18 × 3–4-septate, (85–) 107–117 (–133) × (20–) 26–33 μm ........................................................... ............................................................................................................................................. C. crassibasalia Shu H. Jiang & Z.F. Jia