Table 1 Specimens and sequences included in this study. Data of country and basidiospore size are shown if available. New sequences obtained in this study in bold

X. raduloides Riebesehl & E. Langer

NY s.n.

Cameroon

5.75

3.87

1.49

KY962843

–

–

–

FCUG 1972

Denmark

–

–

–

AF145568

–

–

–

MA-Fungi 70,457, 11074MD

France

5.33

3.37

1.58

KY962827

–

–

–

MA-Fungi 78,658, 11851IS

France

5.38

3.15

1.7

KY962828

–

–

–

MA-Fungi 79,314, 18336Tell.

France

5.03

3.3

1.52

KY962830

–

–

–

MA-Fungi 79,442, 12028IS

France

5.15

3.32

1.55

KY962834

–

–

–

FCUG 1055

Romania

–

–

–

AF145569

–

–

–

FCUG 2136

Spain (Canary Islands)

–

–

–

AF145565

–

–

–

MA-Fungi 608

Spain

5.11

3.02

1.69

KY962826

–

–

–

MA-Fungi 12,778, 2266MD

Spain

5.03

2.95

1.7

KY962832

–

–

–

MA-Fungi 12,864, 755MD

Spain

5.07

3.13

1.62

KY962820

–

–

–

MA-Fungi 12,877, 6996Tell.

Spain

5.25

2.75

1.91

KY962821

–

–

–

MA-Fungi 22,499, 4719MD

Spain

5.4

3.35

1.61

KY962822

KY962861

–

–

MA-Fungi 22,513, 4736MD

Spain

5.48

3.49

1.57

KY962823

KY962862

–

–

MA-Fungi 35,643

Spain (Canary Islands)

6

4

1.5

KY962831

KY962858

KY967054

–

MA-Fungi 75,130, GP2241

Spain

–

–

–

KY962824

KY962863

KY967057

KY967079

MA-Fungi 75,244, GP2162

Spain

5.3

3.3

1.6

KY962833

–

–

–

MA-Fungi 75,272, GP2253

Spain

6

4

1.5

KY962829

KY962859

KY967053

KY967077

MA-Fungi 75,310, GP2291

Spain

5.16

3.05

1.69

KY962825

KY962864

KY967055

KY967080

MA-Fungi 90,709, 002JFL

Spain

4.95

3.24

1.53

KY962844

KY962860

KY967056

KY967078

X. laurentianus sp. nov.

CFMR, DLL2009–049

USA (Minnesota)

5.34

3.06

1.74

–

–

–

–

FPL (USDA), ex-culture DLL2009–049

USA (Minnesota)

–

–

–

JQ673187

KY962866

–

KY967075

CFMR, DLL2009–082

USA (Minnesota)

–

–

–

JQ673188

–

–

–

CFMR, DLL2009–087

USA (Minnesota)

–

–

–

JQ673189

–

–

–

CFMR, HHB-719, holotype

USA (Washington DC)

5.1

3.09

1.65

–

–

–

–

FPL (USDA), ex-culture HHB-719

USA (Washington DC)

–

–

–

KY962845

KY962865

–

KY967076

X. patagonicus sp. nov.

ICMP 13832, ex-culture MR106

Argentina

–

–

–

AF145581

KY962848

KY967058

KY967074

MA-Fungi 90,702, 14,180 M

Chile

5.26

3.51

1.5

KY962836

KY962854

KY967062

–

MA-Fungi 90,703, 3567MPM

Chile

4.38

2.85

1.53

KY962841

–

–

–

MA-Fungi 90,704, 3341MPM

Chile

4.58

3.18

1.44

KY962840

–

KY967060

–

MA-Fungi 90,705, 14007MD

Chile

4.4

3.1

1.42

KY962835

–

KY967063

–

MA-Fungi 90,706, 19705Tell.

Chile

4.56

3.17

1.44

KY962838

KY962856

KY967064

–

MA-Fungi 90,707, 19684Tell., holotype

Chile

4.45

3.12

1.43

KY962837

KY962855

KY967061

–

MA-Fungi 90,708, 3340MPM

Chile

4.32

2.9

1.49

KY962839

KY962857

KY967059

–

X. novozelandicus sp. nov.

ICMP 13833, ex-culture PB 98/41

Australia

–

–

–

AF145580

KY962853

KY967068

KY967073

FCUG 678

Canada

–

–

–

AF145564

–

–

–

MA-Fungi 74,919, 12836IS

France

5.2

3.15

1.65

KY962842

–

–

–

ICMP 13829, ex-culture PB 97/153

New Zealand

–

–

–

AF145577

KY962850

KY967067

KY967071

PDD 70716, Paulus 98/81

New Zealand

4.74

3.3

1.44

–

–

–

–

ICMP 13841, ex-culture Paulus 98/81

New Zealand

–

–

–

AF145579

KY962852

KY967065

KY967072

PDD 70718, Paulus 98/20, holotype

New Zealand

3.77

2.8

1.35

–

–

–

–

ICMP 13838, ex-culture Paulus 98/20

New Zealand

–

–

–

AF145578

KY962851

–

KY967069

PDD 70720, Paulus 98/104

New Zealand

4.52

3.3

1.37

–

–

–

–

ICMP 13840, ex-culture Paulus 98/104

New Zealand

–

–

–

AF145576

KY962849

KY967066

KY967070

PDD 91616

New Zealand

5.34

3.48

1.53

GQ411525

–

–

–

X. flaviporus (outgroup)

MA-Fungi 79,440, 12094IS

Germany

–

–

–

MH260071

MH260066

MH259319

MH758542