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 20
Apothecia present, disciform; ascospores 8 per ascus, on wood
= view photo 
= view synonyms
|
1 |
Lichen compounds absent |
2 |
| 1a | Lichen compounds present | 3 |
|
2 |
Spores 15-20 µm long; disc black, white pruinose; NZ |
P. sporellula A.W. Archer & Elix |
| 2a | Spores 34-41 µm long; disc pale grey, epruinose; NZ | P. duppensis A.W. Archer & Malcolm |
|
3 |
Thiophaninic or picrolichenic acid present |
4 |
| 3a | Depsidones or depsides present | 5 |
|
4 |
Thiophaninic acid present; spores 60-110 µm long; Eur, N.Am. |
P. hymenea (Ach.) Schaer. |
| 4a | Picrolichenic acid present; spores 19-27 µm long; Aus, NZ | P. truncata Kremp.  |
|
5 |
Depsidones present |
6 |
| 5a | Depsides present | 11 |
| 5b | 5-O-Methylhiascic acid ± stictic acid; spores 33-54 µm long; Alaska | P. mccroryae Börk, Goward & Sprib |
|
6 |
Fumarprotcetraric acid present |
7 |
| 6a | Norstictic or psoromic acid present | 9 |
|
7 |
Fumarprotocetraric acid only present |
8 |
| 7a | Fumarprotocetraric and gyrophoric acid; spores 22-30 µm; N.Am | P. suboculata Brodo & Dibbe |
| Fumarprotocetraric and protocetraric acid present; spores 18-20 µm long; Eur, N. Am; also sterile and sorediate | P. borealis Erichs. | |
|
8 |
Spores 10-14 µm long; Eur |
P. pupillaris (Nyl.) Th.Fr. |
| 8a | Spores 12-22 µm long; N.Am | P. subambigens Dibben |
|
9a |
Psoromic acid present; spores 27-40 µm long; China |
P. wulingensis Z.T. Zhao & Z.S. Sun |
| 9b | Norstictic acid present | 10 |
|
10 |
Lichexanthone absent; spores 12-22 µm long; S.Afr |
P. ambigens Nyl. |
| Spores 20-32 µm long; S.Afr. | P. elatior Stirt. | |
| 10a | Lichexanthone present; spores 16-22 µm long; S.Am | P. phlyctaenula Nyl. |
|
11(5a) |
Lecanoric or gyrophoric acid present |
12 |
| 11a | Thamnolic acid present | 14 |
|
12 |
Gyrophoric acid present; spores 20-40 µm long; N. Hemisphere, |
P. carneopallida (Nyl.) Anzi ex Nyl. |
| 12a | Lecanoric acid present | 13 |
|
13 |
Spores 58-75 µm long; PNG |
P. kaindiensis A.W. Archer, Elix & Streimann |
| 13a | Spores 14-22 µm long; with additional gyrophoric acid; N.Am | P. glaucomela (Tuck.) Nyl. |
| 13b | With additional lichexanthone; spores 1-seriate, 30-47 µm; S.Am | P. pycnophora Nyl. |
|
14(11a) |
Spores globular, 20-25 µm diam.; PNG |
P. gongylospora Elix & A.W. Archer |
| 14a | Spores ellipsoid | 15 |
|
15 |
Spores 22-32 µm long; Aus, NZ |
P. thamnolica A.W. Archer |
| 15a | Spores 30-50 µm long; Malaysia, PNG | P. epitheciifera Sipman |
