Pertusaria Group 10

Apothecia, present disciform; ascospores 2 per ascus; on rock

= view photo = view synonyms

1	Thiophaninic and stictic acids present	2
1a	Thiophaninic acid absent; depsidones or depsides present	3
2	Spores 100-180 µm long, 'transvesely striate'; Eur.	P. pluripuncta Nyl.
	Spores rough walled, 100-180 µm long; France	P. gallica de Lesd
	Spores 60-80 µm long; on moss; N.Am	P. flavicunda Tuck.
2a	Spores 48-60 µm long; on moss; N.Am Arctic	P. atra Lynge
3	Depsidones [norstictic, protocetraric or salazinic acids] present	4
3a	Depsides [lecanoric, 2-O-methylperlatolic or thamnolic acids] present	14
4	Protocetraric acid present; spores 100-126 µm long; disc white pruinose; thallus esorediate; Eur.	P. pseudoparotica Sipman
	Spores 100-150 µm long; thallus sorediate; Eur	P. digrediens Nyl.
4	Norstictic or salazinic acid present	5
5	Salazinic acid present; spores 120-150 µm long; Greece	P. parotica Sipman
5a	Norstictic acid present	6
6	Norstictic acid only present	7
6a	Norstictic and protocetraric or picrolichenic acids present	10
7	Spores ≥ 110µm long	8
7a	Spores ≤ 110 µm long	9
8	Spores 120-175 µm long; S.Am.	P. albidopallens Nyl.
8a	Spores 110-115 µm long; S.Am.	P. scutellina Nyl.
8b	Spores 110-160 µm long; Eur.	P. pentelici J. Steiner
9	Spores 80-100 µm long, becoming grey brown; Eur	P. lactescens Mudd
9a	Spores 88-92 µm long; S.Am	P. lecanorina Nyl.
9b	Spores 75-110 µm long; N.Am	P. brattiae Lumbsch & T.H. Nash
10(6a)	Norstictic and protocetraric acids present; spores 80-150 µm long; N. Afr	P. fdoulesiana Harm.
10a	Norstictic and picrolichenic acids present	11
11	Spores ca. < 80 µm long	12
11a	Spores > 80 µm long	13
12	Spores 67-70 µm long; S.Afr.	P. wawreanoides Nyl.
12a	Spores 46-56 µm long; S.Afr., S.Am	P. subdealbata Nyl.
12b	Spores 70-85 µm long [110-115 µm long, H-NYL 23820]; S.Afr.	P. leonina Stizenb.
13	Spores 84-125(-150) µm long; S.Am.	P. alterimosa Darbishire
13a	Spores 80-150 µm long; N.Afr.	P. fdoulesiana Harm.
13b	Spores 162-250 µm long; S.Am.	P. rugifera Müll. Arg.
14(3a)	Thamnolic acid present; spores 80-110 µm long; N.Am, China, Eur.	P. trachythallina Erichs.
14a	Lecanoric acid or 2-O-methylperlatolic acid present	15
15	Lecanoric acid present[?]C+red; spores 140-160 µm long; Asia	P. haematommoides Zahlbr.
15a	2-O-Methylperlatolic acid present; on soil, moss; spores 50-160 µm long; Arctic alpine	P. saximontana Wetmore

Botanic Gardens Trust, Sydney, Australia

Science

Pertusaria Group 10

Apothecia, present disciform; ascospores 2 per ascus; on rock