Botanic Gardens Trust, Sydney, Australia

Science




Pertusaria Group 14

Apothecia present, verruciform; ascospores 2 per ascus, rough; on wood

photo = view photo synonyms = view synonyms

1

Xanthones present 

2

1a  Xanthones absent  11

2

Norlichexanthone derivatives present 

3

2a Lichexanthone and derivatives present 5

3

Arthothelin and 6-O-methylarthothelin present; spores 80-110 µm long; Eur. 

P. dispar J. Steiner

3a  Thiophaninic and stictic acids present    4

4

Spores 70-150 µm long; N.Am, China 

P. xanthodes Müll. Arg.

4a Spores 90-120 µm long; Eur.  P. heterochroa (Müll. Arg.) Erichs.
4b Spores 140-165 µm long; Socotra  P. subflavens Müll. Arg.

5

Lichexanthone present; spores 170-225 µm long; S.Am.  [also 1 per ascus]

P. tetrathalamia var. major Müll. Arg.

5a  Chlorolichexanthones present    6

6

4-Chlorolichexanthone and 2-O-methylperlatolic acid present; spores 190-250 µm long; NZ 

P.'communis' sens. Knight (M)

6a  2-Chlorolichexanthone and conhypoprotocetraric acid present; spores 87-105 µm long;  NZ    P. southlandica A. Knight, Elix & A.W. Archer photo 
6a Polychlorolichexanthones present 7

7

4,5-Dichlorolichexanthone, perlatolic and stenosporic acids present; spores 160-240 µm long; NZ; cf. saxicolous P. allani Zahlbr. 

P. sorodes Stirt.

7a 

4,5-Dichlorolichexanthone, 2-O-methylstenosporic & norstictic acids present;spores 175-210 µm long; NZ     

 P. allosorodes Elix & A.W. Archer photo
7b 

4,5-Dichlorolichexanthone and 2'-O-methylperlatolic acid present; spores 95-120 µm long. Australia

 P. trachyspora A.W. Archer

7c Other polychlorolichexanthones present 8

8

2,4- & 2,5-Dichlorolichexanthone, 2,4,5-trichlorolichexanthone and stictic acid present 

9

8a  2,5-Dichlorolichexanthone, 2,4,5-trichlorolichexanthone, 2'-O-methylperlatolic and  
2-O-methylperlatolic acids present; spores 140-175 µm long; Aus. 
 P. elliptica Müll. Arg. var. bispora Elix & A.W. Archer

9

Thallus lacking isidia & soredia; spores 100-150 µm long; ?circumtropical 

 P. cicatricosa Müll. Arg.

9a  Thallus with isidia or soralia   10

10

Thallus isidiate; spores 116-180 µm long; Thailand 

P. takensis Jariangprasert & A.W. Archer

10a Thallus sorediate; spores 126-204 µm long; Thailand P. langsangensis Jariangprasert & A.W. Archer

11(1a)

Depsidones and ±depsides present 

12

11a  Depsidones absent; depsides present    20

12

Depsidones [stictic or norstictic acid] and depsides present 

13

12a Depsidones only present  15

13

Stictic and 2'-O-methylperlatolic acids present; spores 150-175µm long; PNG 

P. bundiensis A.W. Archer & Elix

13a  Norstictic acid present  14 

14

Norstictic and divaricatic acids present; spores 120-166 µm long; PNG, Thailand 

P. allothwaitesii  Jariangpraseret & A.W. Archer

14a Norstictic ±planaic acids present; spores 100-160 µm long; N.Am  P. neoscotia Lamb
14b Norstictic and 2-O-methylstenosporic acids present; spores 120-137 µm long, rough; India   P. wattiana Müll. Arg.
14c  Norstictic acid and atranorin present; spores 70-157 µm long; India    P. hirtella Singh & Sinha

15

Fumarprotocetraric, protocetraric or hypoprotocetraric acids present 

16

15a Stictic, norstictic acid or variolaric acids present  18

16

Hypoprotocetraric acid present; spores 125-175 µm long; NZ 

P. vallicola Elix & Malcolm

16a Fumarprotocetraric or protocetraric acids present 17

17 

Fumarprotocetraric acid present; spores 75-135 µm long; N.Am, China 

P. subpertusa Brodo
17a Protocetraric acid present; spores 110-160 µm long; Aus, PNG, Asia  P. thwaitesii Müll. Arg. photo
18 Variolaric acid present; spores 100-120 µm long; N.Am  P. obruta Harris
18a Stictic or norstictic  acids present 19

19

Stictic acid present; spores 110-125 µm long; PNG  P. cicatricosa Müll. Arg. var. deficiens A..W. Archer & Elix photo
  Stictic and menegazziaic acids present; spores 150-175 µm long; India   P. neilgherrensis (Müll. Arg.) Awasthi & Srivastava 
19a  Norstictic acid present; spores 150-200 µm long; PNG   P. perthwaitesii A.W. Archer & Elix photo
20(11a) Methyl 2-O-methyldivaricatate and 2-O-methyldivaricatic acid present; spores 86-150 µm long; Thailand  P. litchicola Jariangprasert & A.W. Archer
20a  2'-O-Methylperlatolic acid present; spores 185-250 µm long; PNG    P. subsorodes Elix & A.W. Archer