Heterodermia species

Joshi, Yogesh, Upadhyay, Shashi & Chandra, Krishna, 2014, Heterodermia upretii, a new species from India (Physciaceae, Ascomycota), Phytotaxa 175 (2), pp. 117-120 : 119

Key to corticated Heterodermia species lacking vegetative propagules

1. Medulla yellow to yellowish-orange..................................................................................................................................................2

- Medulla white.....................................................................................................................................................................................4

2. Spores of Pachysporaria- type; medulla P– or P+ yellow ..................................................................................................................3

- Spores of Polyblastidia- type; medulla P+ red...................................................................................................................... H. upretii

3. Medulla P–; containing leucotylin..................................................................................................................................... H. rugulosa

- Medulla P+ yellow; lacking leucotylin................................................................................................................................ H. firmula

4. Dissectic acid present in the medulla .................................................................................................................................................5

- Dissectic acid absent in the medulla...................................................................................................................................................6

5. Norstictic acid present in the medulla; widely distributed in Asia, Australia.............................................................. H. angustiloba

- Norstictic acid absent; endemic to Australia...................................................................................................................... H. verdonii

6. Salazinic acid absent in the medulla............................................................................................................................... H. diademata

- Salazinic acid present in the medulla .................................................................................................................................................7

7. Paleotropical; medulla P+ yellow.................................................................................................................................... H. rubescens

- Neotropical; medulla P+ orange.......................................................................................................................................... H. tropica