Japewiella, Printzen, 1999

Cai, Yu-Tong, Xu, Yuan-Ke, Li, Ruo-Tong & Zhang, Lu-Lu, 2025, Japewiella jingningensis (Lecanoraceae), a new species from China, Phytotaxa 702 (1), pp. 109-115 : 114

Key to the species of Japewiella

1. Thallus sorediate; norstictic and connorstictic acids present ......................... J. dollypartoniana J.L. Allen & Lendemer (2015: 59)

- Thallus esorediate...............................................................................................................................................................................2

2. Epihymenium deep blue-green, K+ olive-green, N+ purple; thallus white to pale grey-white, surface warted to verruculose; pycnidia often present; atranorin, chloroatranorin, perlatolic acid and stenosporic acid present ..................................... J. variabilis

- Epihymenium orange-brown or red-brown to olive-brown ...............................................................................................................3

3. Atranorin present ................................................................................................................................................................................4

- Atranorin absent .................................................................................................................................................................................6

4. Ascospores 11.5–13.5 × 7–8 μm; epihymenium orange-brown, Pd+ yellow-orange; thallus greenish white, rimose-areolate .......... .......................................................................................................................................... J. djagensis (Zahlbr.) Printzen (1999: 716)

- Ascospores generally> 13.5 μm long ................................................................................................................................................5

5. Thallus continuous with minute warts, rarely delimited by gray prothallus; epihymenium K+ greenish, N+ rose-red, P+ red, needle-shaped crystal; ascospores 13–20 × 7–10 μm........................................................................ J. pacifica Printzen (1999: 716)

- Thallus smooth, immersed to superficial; prothallus black; epihymenium K+ dull brown, N–; ascospores 13–22 × 7–11 μm ......... ....................................................................................................................................................................................... J. tavaresiana

6. Apothecia pale pink to red-brown, often whitish grey pruinose, at least when young; margin densely inspersed with crystals inside; epihymenium red-brown, K+ dirty brown; ascospores 12–15.4–20 × 8–10.6–14 μm.................................................... J. pruinosula

- Apothecia orange-brown to black, epruinose; margin not inspersed with crystals inside; epihymenium red-brown to olive-brown, K–, N+ orange-red, P–; ascospores 12–13.5 × 5.5–7 μm.......................................................................................... J. jingningensis