Xanthoparmelia

Jayalal, Udeni, Divakar, Pradeep K., Joshi, Santosh, Oh, Soon Ok & Hur, Jae-Seoun, 2014, Overview of Xanthoparmelia taxa from South Korea including the description of two new species (Parmeliaceae, Ascomycota), Phytotaxa 181 (2), pp. 96-109 : 106

Key to the South Korean species of Xanthoparmelia

1. Thallus lacking isidia..........................................................................................................................................................................2

- Thallus isidiate....................................................................................................................................................................................4

2. Elongated “stenophylloid (elongate, narrow) lobes” present ........................................................................................ X. stenophylla

- “Stenophylloid lobes” absent .............................................................................................................................................................3

3. Atranorin present ............................................................................................................................................................... X. kolriana

- Atranorin absent ................................................................................................................................................. X. subpolyphylloides

4. Lower surface black ...........................................................................................................................................................................5

- Lower surface brown..........................................................................................................................................................................7

5. Medulla K– (fumarprotocetraric or protocetraric acid)........................................................................................... X. tuberculiformis

- Medulla K+ (stictic acid)....................................................................................................................................................................6

6. Isidia cylindrical .............................................................................................................................................................. X. conspersa

- Isidia globose.......................................................................................................................................................................... X. saxeti

7. Medulla reddish-purple ................................................................................................................................................ X. volcanicola

- Medulla white.....................................................................................................................................................................................8

8. Medulla K–.........................................................................................................................................................................................9

- Medulla K+ yellow or yellow turning red........................................................................................................................................12

9. Medulla KC+ (rose), P–, norlobaridone & loxodin present .......................................................................................... X. claviculata

- Medulla KC–, P+ (red or orange red), protocetraric, fumarprotocetraric or succinprotocetaric acid..............................................10

10. Succinprotocetraric acid absent, fumarprotocetraric and protocetraric acid present ................................................. X. hirosakiensis

- Succinprotocetraric acid present with fumarprotocetraric or protocetraric acid ..............................................................................11

11. Lower surface dark brown, coralloid isidia more or less constricted at base................................................................. X. botryoides

- Lower surface pale brown, coralloid isidia barely constricted at base........................................................................ X. subramigera

12. Stictic acid present................................................................................................................................................................... X. plittii

- Stictic acid lacking, salazinic acid present .......................................................................................................................................13

13. Isidia, moderate, pale tipped somewhat erumpent, lower surface uniformly dark brown ................................................. X. coreana

- Isidia black tipped, entire, lower surface pale brown....................................................................................................... X. mexicana