Science
- Evolutionary ecology research
- Horticultural research
- Plant diversity research
- Amalie Dietrich project
- Australian freshwater algae
- Australian mesic zone biota
- Biology of Myrtaceae
- Bryophytes
- Cycad evolution and diversity
- Cyperaceae
- DNA of ground orchids
- DNA studies of Restionaceae
- Ecdeiocoleaceae
- Evolution of Australian Utricularia
- Evolution of Proteaceae
- Fern biodiversity of Australia
- Indigofera
- Key to the Lichen Genus Pertusaria
- Pertusaria Group 1
- Pertusaria Group 2
- Pertusaria Group 3
- Pertusaria Group 4
- Pertusaria Group 5
- Pertusaria Group 6
- Pertusaria Group 7
- Pertusaria Group 8
- Pertusaria Group 9
- Pertusaria Group 10
- Pertusaria Group 11
- Pertusaria Group 12
- Pertusaria Group 13
- Pertusaria Group 14
- Pertusaria Group 15
- Pertusaria Group 16
- Pertusaria Group 17
- Pertusaria Group 18
- Pertusaria Group 19
- Pertusaria Group 20
- Pertusaria Group 21
- Pertusaria Group 22
- Pertusaria Synonyms
- Lamiaceae & Urticaceae
- Lamiaceae
- Lejeuneaceae
- Lepidoziaceae - southern liverworts
- Marine algae
- New Species and phylogeny in Restionaceae
- Phylogenetic biome conservatism
- Phylogeny and new species of Australian Utricularia
- Phylogeny of Orchidaceae tribe Diurideae
- Poales
- Pollination studies in Prostanthera
- Project Camellia
- Rutaceae
- She-oaks - tough survivors
- Telopea special edition
- Theaceae of South-East Asia
- Trees of Papua New Guinea
- Tristaniopsis in south-east Asia
- Urticaceae of Java
- XVIII International Botanical Congress
- Plant pathology research
- Herbarium & resources
- Scientific publications
Pertusaria Group 4
Apothecia absent; soredia present; on wood
= view photo 
= 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 |
| 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  | |
| 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 |
| 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. |
| 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 |
| 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  |
| 13 | Stictic acid present; Australia | P. albopunctata A.W. Archer & Elix |
| 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.  |
| 18a | Depsides or depsone present | 19 |
| 19 | Thamnolic acid or 2'-O-methylperlatolic 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 |
| 21 | Lecanoric acid present; also fertile; Aus, PNG; cosmopolitan | P. velata (Turner) Nyl.  |
| Lecanoric and variolaric acids present | P. hemisphaerica (Flörke) Erichs. | |
| 21a | Picrolichenic acid present | 22 |
| 22 | Picrolichenic ± protocetraric acids present; ± fertile | P. amara (Ach.) Nyl. |
| 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  |
