Botanic Gardens Trust, Sydney, Australia

Science




Pertusaria Group 4

Apothecia absent; soredia present; on wood

photo = view photo synonyms = view synonyms

1

Xanthones present

2

1a Xanthones absent   9

2

Lichexanthone or 4,5-dichlorolichexanthone present 

3

2a Arthothelin, thiophaninic acid or thuringione present   5

3

4,5-Dichlorolichexanthone present 

4

3a Lichexanthone present with depsone, depsidone or depside  7
3b

2,4- and 2,5-Dichlorolichexanthone, 2,4,5-trichlorolichexanthone and stictic acid present; Australia and New Zealand; also saxicolous 

P. puffina A.W. Archer & Elix photo 

4

4,5-Dichlorolichexanthone present alone; Central Am. RL 33103 (F) 

Pertusaria sp.

4a 4,5-Dichlorolichexanthone and stictic acid present: N.Am

 P. expolita Harris

  Aus, PNG  P. balekensis A.W. Archer & Elix photo

5

Thiophaninic acid and depsidones or depside present

6

5a Arthothelin and thuringone present; Australia  P. flavopunctata A.W. Archer & Elix
5b Arthothelin, thuringone and stictic acid present; Norfolk Island P. cyathicola Elix

6

Thiophaninic acid and stictic acid present; Australia 

P. maritima A.W. Archer & Elix photo 

6a Thiophaninic acid and norstictic acid present; N.Am  P. azulensis de Lesd.
6b Thiophaninic and gyrophoric acid present; Central Am, RL 33030 (F)    Pertusaria sp.

7

Lichexanthone, picrolichenic and superpicrolichenic acids present; Norfolk Island, Australia  

P. verdonii A.W. Archer

7a Lichexanthone and methyl 2'-O-methylmicrophyllinate present

 P. variabilis Elix & A.W. Archer 

7b Lichexanthone and confluentic, thamnolic, or stictic acid present 

 8

8

Lichexanthone and thamnolic acid present; Australia, PNG, Sri Lanka 

P. leucosorodes Nyl. photo synonyms

8a Lichexanthone and confluentic acid present; Australia, Thailand P. confluentica Jariangprasert 
8b Lichexanthone and stictic acid present; Hawaii P. oahuensis H. Magn.

9a(1a)

Fatty acids present 

 10

9b Depsides or depsidones present  11

10

Allopertusaric acid present; Northern Hemisphere 

P. albescens (Huds.) Choisy & Werner synonyms

10a Lichesterinic acid present; Central Africa P. krogiae A.W. Archer et al.
10b Isomyelochroic acid present  P. ophthalmiza (Nyl.) Nyl.

11(9a)

Depsidones present 

12

11a Depsides or picrolichenic acid present or lichen compounds absent  18

12

Norstictic, stictic or fumarprotocetraric acid present 

13

12a Psoromic acid present; Australia & NZ P. psoromica A.W. Archer & Elix photo

13

Stictic acid present; Australia 

P. albopunctata A.W. Archer & Elix photo 

13a Norstictic or fumarprotocetraric acid present  14

14

Fumarprotocetraric acid present; Eur, N.Am; also fertile 

P. borealis Erichs.

14a Norstictic acid present  15

15

Australia; soralia white 

16

15a Elsewhere  17

16

Soralia 0.5-1 mm diam., well-defined; stictic acid absent. 

P. erythrella Müll. Arg.

16a Soralia to 2 mm diam, ill-defined; with additional stictic acid; sp. nov. P. alloerythrella
17a

India; soralia ochraceous to ochraceous red, 0.5-2 mm diam.

P. colorata Awasthi & Srivastava
17b West Indies; K+ red; soralia 0.4-2 mm diam.  P. torulosa Vain.
18(11a)

Lichen compounds absent; Philippines 

P. amara var. philippinensis Räs. photo
18a Depsides or depsone present 19
19 Thamnolic acid or 2-O-methylperlatolic acid or hypothamnolic acid present 20
19a Lecanoric or picrolichenic acids present  21
20 Thamnolic acid present; Japan  P. violaceae Oshio
20a 2'-O-Methylperlatolic acid present; Thailand P. uttaraditensis Jariangprasert
20b Hypothamnolic & cryptothamnolic acids present; China P. subviolacea Q. Ren photo 
21 Lecanoric acid present; also fertile; Aus, PNG; cosmopolitan  P. velata (Turner) Nyl. photo synonyms
Lecanoric and variolaric acids present  P. hemisphaerica (Flörke) Erichs. synonyms
21a Picrolichenic acid present  22 
22 Picrolichenic ± protocetraric acids present; ± fertile 

P. amara (Ach.) Nyl. synonyms

22a  ?Picrolichenic acid only present; K-, C-, KC+ reddish; Hawaii  P. molokaiensis H. Magn.
22b Picrolichenic and subpicrolichenic acids present; PNG  P. buloloensis A.W. Archer, Elix & Streimann photo