Botanic Gardens Trust, Sydney, Australia

Science




Pertusaria Group 15

Apothecia present, verruciform; ascospores 4 per ascus, smooth; on rock or moss

photo = view photo synonyms = view synonyms

1

Chlorinated xanthones present 

2

1a Chlorinated xanthones absent  9

2

2-Chlorolichexanthone, stictic and 2-O-methylsuperlatolic acids present; spores 108-125 µm long; PNG 

P. aptrootii A.W. Archer & Elix photo

2a 4,5-Dichlorolichexanthone or 4-chlorolichexanthone present   3

3

4,5-Dichlorolichexanthone  present

4

3a 4-Chlorolichexanthone present; spores 100-120 µm long; Antarctic, Marion Is.  [? not published] 'P. gremmenii Øvstd.'

4

On moss 

5

4a On rock 7

5

4,5-Dichlorolichexanthone, stictic and 2-O-methylperlatolic acids present; spores 140-175 µm long; S.Am. 

P. tapadensis Elix & A.W. Archer

5a 4,5-Dichlorolichexanthone and stictic acid present  6

6

Spores 93-104 µm long; Japan, China 

P. quartans Nyl.

6a Spores 42-96 µm long; Arctic P. trochisea Norm.

7(4a)

4,5-Dichlorolichexanthone only present; spores 2-4 per ascus, 70-90 µm long; Cape Verde Is 

P. aleianta Nyl. photo

7a Stictic or norstictic acids present  8

8

4,5-Dichlorolichexanthone and stictic acid present; spores 80-105 µm long; Aus. 

P. trevethensis A.W. Archer

8a 4,5-Dichlorolichexanthone and norstictic acid present; spores 80-90 µm long; S.Am  P. rudecta Müll. Arg.

9(1a)

On moss; norstictic acid present; spores 50-180 µm long; circumpolar 

P. glomerata (Ach.) Schaer.

  On moss and rock;  [also 2,3 or 5/ascus]; polar  P. alaskensis Erichs.
  Spores (1-)2(-3); also on wood; N.Am, arctic P. subobducens Nyl. 
9a On rock  10

10

2-O-Methylperlatolic or confluentic acid present 

11

10a Norstictic or stictic acids present 12

11

2-O-Methylperlatolic acid present; spores 145-185 µm long; S.Am. 

P. spegazzinii Müll. Arg.

11a Confluentic acid present; spores 108-130 µm long; S.Am P. malvinae Messuti & A.W. Archer photo

12

Norstictic acid present 

13

12a Stictic acid and lichexanthone present; spores 70-85 µm long; Central Afr. P. rhodesica Vain.

13

Spores 55-75 µm long; Mauritius 

P. hymenelioides J.C. David

13a Spores 60-90 µm long; NZ P. graphica C. Knight photo