Table S2.List of COI sequencedspecimens, their GenBank numbers, herbarium accession numbers andcollection information. Specimens labeledCPVPare in Pardo et al. (2014). Collector abbreviations:JG,Jacques Grall;YF,Yann Fontana; WT,Wilfried Thomas; MR, Marine Robuchon;VP,VivianaPeña;LLG, Line Le Gall;IB, Ignacio Bárbara;ASA, A Santolaria;ASE, Antonio Secilla; JH-S, Jason Hall-Spencer;FB, Francis Bunker;JS,Javier Souto;EB,EnricBallesteros; PD, Pilar Díaz;CP, Cristina Pardo;JC, J Cremades;JH-K,Jazmin Hernandez-Kantun;RR-R, Rafael Riosmena-Rodriguez;VG,VerónicaGarcía Redondo;IM,Isabel Maneiro; CP, César Peteiro;NS,NoemíSanchez. For subtidalcollections the asterisk (*) indicatescrustosespecimensnot associated withmaerl/rhodolith beds. Herbarium acronyms follow Thiers (2015).

Name / COI -Genbank / Specimen / Date / Country / Location / State/
Region / Habitat / Depth / Collect by / Herbarium
Accession #
Lithophyllumincrustans / KC861444 / VPF00114/CPVP965 / 04/11 / France / Rade de Brest / Brittany / rhodolith / 1 m / JG / SANT-Algae 29176
KR733488 / VPF00188 / 04/11 / France / Rade de Brest / Brittany / rhodolith / 1 m / JG / SANT-Algae 29177
KR733495 / VPF00298A / 13/04/2012 / France / Rade de Brest / Brittany / Epizoic on livingscallopMimachlamys varia / subtidal / JG / SANT-Algae 29178
KR733436 / VPF00385 / 12/10/2011 / France / Carantec, Roscoff / Brittany / Epiphytic on Laminaria holdfast* / subtidal / YT,WT, MR,VP / SANT-Algae 29173
KR733537 / LLG4591 / 19/09/2012 / Spain / La Herradura, Granada / Andalusia / rhodolith / 15 m / LLG, VP / PC0144123
KR733536 / LLG4592A / 19/09/2012 / Spain / La Herradura, Granada / Andalusia / rhodolith / 15 m / LLG, VP / PC0144124
KR733496 / LLG4592B / 19/09/2012 / Spain / La Herradura, Granada / Andalusia / rhodolith / 15 m / LLG, VP / PC0144125
KR733480 / LLG4609 / 19/09/2012 / Spain / La Herradura, Granada / Andalusia / rhodolith / 15 m / LLG, VP / PC0144156
KR733428 / LLG4656 / 21/09/2012 / Spain / Rocas del Plomo, Cabo de Gata, Almeria / Andalusia / Crust on pebble / 23-27 m / LLG / PC0144206
KR733452 / VPF00008 / 09/05/2011 / France / Anse de Malmousque / Marseille / rhodolith / 1 m / IB / SANT-Algae 26284
KR733538 / VPF00012 / 03/08/2011 / Spain / Cadavedo / Asturias / Crust on bed rock / Intertidal / VP / SANT-Algae 29204
KR733493 / VPF00099 / 14/07/2011 / Spain / Ziérbena, Puerto Bilbao / Basque Country / Crust on bed rock* / 9-11 m / ASA / SANT-Algae 29193
KC861446 / VPF00198/CPVP302 / 22/02/1999 / Ireland / Kingstown Bay / Connemara / rhodolith / 3 m / JH-S / SANT-Algae 29175
KC861445 / VPF00197/CPVP303 / 22/02/1999 / Ireland / Kingstown Bay / Connemara / rhodolith / 3 m / JH-S / SANT-Algae 29174
KR733470 / VPF00360B / 25/06/2011 / Spain / Punta Chastellas, Ría de Arousa / Galicia / Crust on shell* / 7 m / IB, FB, JS, VP / SANT-Algae 29142
KR733521 / VPF00441 / 07/2010 / Spain / Tossa de Mar / Catalonia / rhodolith / subtidal / EB / SANT-Algae 29129
KR733457 / VPF00616 / 22/08/2012 / France / Douarnenez / Brittany / Crust on shell / subtidal / LLG / PC0145169
Lithophyllumhibernicum / KR733463 / LLG4601 / 19/09/2012 / Spain / La Herradura, Granada / Andalusia / crust / 15 m / LLG, VP / PC0144144
KR733464 / VPF00002 / 30/04/2011 / France / Port de Sète, Le Mole Saint-Louis / Languedoc-Roussillon / crust / 2 m / IB / SANT-Algae 26285
KR733484 / VPF00001 / 16/06/2011 / Portugal / Playa de Santa Cruz,(Torres Vedras) / Estremadura / crust / intertidal / IB / SANT-Algae 29121
KR733492 / VPF00023 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29205
KR733447 / VPF00024 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29206
KR733465 / VPF00025 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29207
KR733512 / VPF00030 / 31/08/2011 / Spain / Camelle, A Coruña / Galicia / crust / Intertidal / VP / SANT-Algae 29158
KR733485 / VPF00031 / 31/08/2011 / Spain / Camelle, A Coruña / Galicia / crust / Intertidal / VP / SANT-Algae 29159
KR733451 / VPF00042 / 31/08/2011 / Spain / Camelle, A Coruña / Galicia / crust / Intertidal / VP / SANT-Algae 29160
KR733483 / VPF00043 / 31/08/2011 / Spain / Camelle, A Coruña / Galicia / crust / Intertidal / VP / SANT-Algae 29161
KR733462 / VPF00049 / 31/08/2011 / Spain / Camelle, A Coruña / Galicia / crust / Intertidal / VP / SANT-Algae 29162
KR733524 / VPF00050 / 31/08/2011 / Spain / Camelle, A Coruña / Galicia / crust / Intertidal / VP / SANT-Algae 29163
KR733437 / VPF00051 / 31/08/2011 / Spain / Camelle, A Coruña / Galicia / crust / Intertidal / VP / SANT-Algae 29164
KR733426 / VPF00053 / 31/08/2011 / Spain / Camelle, A Coruña / Galicia / crust / Intertidal / VP / SANT-Algae 29165
KR733490 / VPF00057 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29208
KR733508 / VPF00058 / 03/08/2011 / Spain / Cadavedo / Asturias / rhodolith / Intertidal / VP / SANT-Algae 29209
KR733510 / VPF00059 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29210
KR733442 / VPF00060 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29211
KR733468 / VPF00061 / 03/08/2011 / Spain / Cadavedo / Asturias / rhodolith / Intertidal / VP / SANT-Algae 29212
KR733529 / VPF00062 / 03/08/2011 / Spain / Cadavedo / Asturias / rhodolith / Intertidal / VP / SANT-Algae 29213
KR733507 / VPF00063 / 03/08/2011 / Spain / Cadavedo / Asturias / rhodolith / Intertidal / VP / SANT-Algae 29214
KR733455 / VPF00064 / 03/08/2011 / Spain / Cadavedo / Asturias / rhodolith / Intertidal / VP / SANT-Algae 29215
KR733499 / VPF00066 / 03/08/2011 / Spain / Cadavedo / Asturias / rhodolith / Intertidal / VP / SANT-Algae 29216
KR733525 / VPF00067 / 03/08/2011 / Spain / Cadavedo / Asturias / rhodolith / Intertidal / VP / SANT-Algae 29217
KR733533 / VPF00069 / 03/08/2011 / Spain / Cadavedo / Asturias / rhodolith / Intertidal / VP / SANT-Algae 29218
KR733479 / VPF00070 / 03/08/2011 / Spain / Cadavedo / Asturias / rhodolith / Intertidal / VP / SANT-Algae 29219
KR733518 / VPF00072 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29220
KR733441 / VPF00073 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29220
KR733500 / VPF00076 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29221
KR733482 / VPF00077 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29222
KR733542 / VPF00085 / 03/08/2011 / Spain / Cadavedo / Asturias / crust / Intertidal / VP / SANT-Algae 29223
KR733454 / VPF00112 / 06/11/2010 / Spain / Langre / Cantabria / Epizoic on barnacles / intertidal / PD / SANT-Algae 29197
KR733476 / VPF00116 / 20/01/2011 / Spain / Perbes, A Coruña / Galicia / crust / intertidal / CP, PD / SANT-Algae 29183
KR733519 / VPF00117 / 19/01/2011 / Spain / Barizo, A Coruña / Galicia / crust / intertidal / VP / SANt-Algae-29188
KR733453 / VPF00119 / 21/01/2011 / Spain / Caión, A Coruña / Galicia / crust / intertidal / CP, PD / SANT-Algae 29145
KR733448 / VPF00128 / 23/03/2011 / Spain / La Franca / Asturias / crust / Intertidal / IB, PD / SANT-Algae 29202
KR733489 / VPF00142F / 07/11/2010 / Spain / Virgen del Mar / Cantabria / crust / intertidal / PD / SANT-Algae 29199
KR733431 / VPF00142T / 07/11/2010 / Spain / Virgen del Mar / Cantabria / crust / intertidal / PD / SANT-Algae 29200
KR733539 / VPF00157 / 19/03/2011 / France / Biarritz, / crust / intertidal / IB, PD / SANT-Algae 29171
KR733511 / VPF00170 / 19/01/2011 / Spain / Ártabra, A Coruña / Galicia / crust / intertidal / CP, IB / SANT-Algae 29149
KR733532 / VPF00174 / 21/01/2011 / Spain / Barrañán, A Coruña / Galicia / crust / intertidal / CP, PD / SANT-Algae 29148
KR733505 / VPF00175 / 23/01/2011 / Spain / Playa de Ber, A Coruña / Galicia / crust / intertidal / IB, PD / SANT-Algae 29185
KR733531 / VPF00731 / 25/06/2010 / Spain / Playa de Leira, A Coruña / Galicia / crust / intertidal / VP / SANT-Algae 29187
KR733471 / VPF00184 / 29/04/2010 / Spain / Camelle, A Coruña, A Coruña / Galicia / crust / intertidal / VP, IB, JC, JH-K, RR-R / SANT-Algae 29152
KR733494 / VPF00201 / 27/05/2010 / Spain / Playa de Aguilar / Asturias / crust / intertidal / IB, PD / SANT-Algae 29198
KR733458 / VPF00209 / 29/04/2010 / Spain / Camelle, A Coruña, A Coruña / Galicia / crust / intertidal / VP, IB, JC, JH-K, RR-R / SANT-Algae 29157
KR733469 / VPF00210 / 25/06/2010 / Spain / Playa de Leira, A Coruña / Galicia / Crust / intertidal / VP / SANT-Algae 29186
KR733535 / VPF00214 / 19/02/2011 / Spain / San Juan de Gaztelugatxe / Basque Country / crust / intertidal / ASE, VP. / SANT-Algae 29192
KR733474 / VPF00230 / 18/03/2011 / France / Fort du Mingant, Rade de Brest / Brittany / crust / intertidal / VP / SANT-Algae 29179
KR733438 / VPF00232 / 18/03/2011 / France / Fort du Mingant, Rade de Brest / Brittany / crust / intertidal / VP / SANT-Algae 29180
KR733504 / VPF00233 / 18/03/2011 / France / Fort du Mingant, Rade de Brest / Brittany / crust / intertidal / VP / SANT-Algae 29181
KR733473 / VPF00237 / 18/03/2011 / France / Fort du Mingant, Rade de Brest / Brittany / crust / intertidal / VP / SANT-Algae 29182
KR733430 / VPF00265 / 05/08/2011 / Spain / Isla de Sálvora,A Coruña / Galicia / rhodolith / 4 m / IB, VG, VP / SANT-Algae 29141
KR733466 / VPF00288 / 21/03/2011 / France / Anse du Minou / Brittany / crust / Intertidal / IB, PD / SANT-Algae 29166
KR733444 / VPF00289 / 19/03/2011 / France / Biarritz / France / crust / Intertidal / IB, PD / SANT-Algae 29170
KR733491 / VPF00292 / 22/02/2011 / Portugal / Almograve / Alentejo / crust / intertidal / IB, PD / SANT-Algae 29125
KR733514 / VPF00293 / 21/01/2011 / Spain / Caión, A Coruña / Galicia / crust / intertidal / CP, PD / SANT-Algae 29146
KR733439 / VPF00294 / 22/03/2011 / Spain / Playa de la Arena, Muskiz / Basque country / crust / Intertidal / IB, PD, ASE / SANT-Algae 29190
KR733481 / VPF00295 / 18/03/2011 / Spain / Zumaya / Basque country / crust / intertidal / IB / SANT-Algae 29189
KR733449 / VPF00297A / 23/03/2011 / Spain / La Franca / Asturias / crust / intertidal / IB, PD / SANT-Algae 29203
KR733503 / VPF00297B / 23/03/2011 / Spain / La Franca / Asturias / crust / intertidal / IB, PD / SANT-Algae 29203
KR733443 / VPF00303 / 29/04/2010 / Spain / Camelle, A Coruña / Galicia / crust / intertidal / VP, IB, JC, JH-K, RR-R / SANT-Algae 29156
KR733429 / VPF00307 / 19/03/2011 / France / Biarritz. / France / crust / intertidal / IB, PD / SANT-Algae 29172
KR733516 / VPF00308 / 29/04/2010 / Spain / Camelle, A Coruña / Galicia / crust / intertidal / VP, IB, JC, JH-K, RR-R / SANT-Algae 29155
KR733460 / VPF00330A / 21/02/2011 / Portugal / Ingrina / Algarve / crust / intertidal / PD, IB / SANT-Algae 29124
KR733534 / VPF00331 / 09/02/2011 / Spain / Peinzás, Lugo / Galicia / crust / intertidal / CP, IB, VP, IM / SANT-Algae 29120
KR733478 / VPF00336 / 21/01/2011 / Spain / Barrañán,ACoruña / Galicia / crust / intertidal / PD / SANT-Algae 29147
KR733498 / VPF00338 / 09/02/2011 / Spain / Peinzás, Lugo / Galicia / crust / intertidal / CP, IB, VP, IM / SANT-Algae 29115
KR733515 / VPF00339 / 09/02/2011 / Spain / Peinzás, Lugo / Galicia / crust / intertidal / CP, IB, VP, IM / SANT-Algae 29116
KR733477 / VPF00342 / 09/02/2011 / Spain / Peinzás, Lugo / Galicia / crust / intertidal / CP, IB, VP, IM / SANT-Algae 29117
KR733461 / VPF00343 / 23/01/2011 / Spain / Playa de Ber,ACoruña / Galicia / crust / intertidal / IB, PD / SANT-Algae 29184
KR733513 / VPF00345 / 19/01/2011 / Spain / Ártabra, A Coruña / Galicia / crust / intertidal / IB / SANT-Algae 29151
KR733475 / VPF00348 / 20/02/2011 / Portugal / Olhosd´agua / Algarve / crust / Intertidal / PD, IB / SANT-Algae 29126
KR733440 / VPF00350 / 19/02/2011 / Spain / Punta Plata, Cádiz / Andalusia / crust / Intertidal / PD, IB / SANT-Algae 29123
KR733522 / VPF00352 / 18/04/2011 / Portugal / Montedor / Viana do Castelo / crust / intertidal / ASE, VP / SANT-Algae 29127
KR733487 / VPF00353 / 19/04/2011 / Spain / Peinzás, Lugo / Galicia / crust / intertidal / ASE, VP / SANT-Algae 29139
KR733467 / VPF00354 / 18/04/2011 / Portugal / Montedor / Viana do Castelo / crust / intertidal / ASE, VP / SANT-Algae 29128
KR733501 / VPF00356B / 09/02/2011 / Spain / Peinzás, Lugo / Galicia / crust / intertidal / CP, IB, VP, IM / SANT-Algae 29119
KR733446 / VPF00356C / 09/02/2011 / Spain / Peinzás, Lugo / Galicia / crust / intertidal / CP, IB, VP, IM / SANT-Algae 29119
KR733509 / VPF00358A / 29/04/2010 / Spain / Camelle, A Coruña / Galicia / crust / intertidal / VP, IB, JC, JH-K, RR-R / SANT-Algae 29153
KR733433 / VPF00358B / 29/04/2010 / Spain / Camelle, A Coruña / Galicia / crust / intertidal / VP, IB, JC, JH-K, RR-R / SANT-Algae 29153
KR733434 / VPF00365A / 29/04/2010 / Spain / Camelle, A Coruña / Galicia / crust / intertidal / VP, IB, JC, JH-K, RR-R / SANT-Algae 29154
KR733523 / VPF00369C / 09/02/2011 / Spain / Peinzás, Lugo / Galicia / crust* / 2 m / CP, IB, VP, IM / SANT-Algae 29118
KR733497 / VPF00378A / 19/04/2011 / Spain / Peinzás, Lugo / Galicia / crust / intertidal / ASE, VP / SANT-Algae 29138
KR733540 / VPF00380 / 19/04/2011 / Spain / Peinzás, Lugo / Galicia / crust / intertidal / ASE, VP / SANT-Algae 29140
KR733506 / VPF00401 / 16/06/2011 / Portugal / Praia de Santa Cruz / Estremadura / crust / intertidal / IB / SANT-Algae 29122
KR733486 / VPF00405B / 13/05/2011 / France / Molène / Brittany / crust / subtidal / JG, VP / SANT-Algae 29167
KR733456 / VPF00407A / 13/05/2011 / France / Molène / Brittany / crust / subtidal / JG, VP / SANT-Algae 29168
KR733526 / VPF00411A / 13/05/2011 / France / Molène / Brittany / crust / subtidal / JG, VP / SANT-Algae 29169
KR733527 / VPF00433 / 12/01/2012 / Spain / Ártabra, A Coruña / Galicia / crust / intertidal / IB, CP / SANT-Algae 29150
KR733459 / VPF00435 / 19/05/2012 / Spain / Playa das Fontes, A Coruña / Galicia / crust* / 10 m / JS, VP / SANT-Algae 29136
KR733520 / VPF00497 / 17/04/2011 / Spain / Oia, Pontevedra / Galicia / crust / Intertidal / ASE, VP / SANT-Algae 29144
KR733528 / VPF00500A / 17/04/2011 / Spain / Oia, Pontevedra / Galicia / crust / Intertidal / ASE, VP / SANT-Algae 29143
KR733450 / VPF00500B / 17/04/2011 / Spain / Oia, Pontevedra / Galicia / crust / Intertidal / ASE, VP / SANT-Algae 29143
KR733530 / VPF00504 / 19/04/2011 / Spain / Playa Peinzás, Lugo / Galicia / crust / intertidal / ASE, VP / SANT-Algae 29137
KR733541 / VPF00564 / 21/02/2011 / Spain / Comillas / Cantabria / crust / intertidal / ASE, VP / SANT-Algae 29194
KR733472 / VPF00568 / 21/02/2011 / Spain / Comillas / Cantabria / crust / Intertidal / ASE, VP / SANT-Algae 29195
KR733445 / VPF00569 / 21/02/2011 / Spain / Comillas / Cantabria / crust / Intertidal / ASE, VP / SANT-Algae 29196
KR733432 / VPF00575 / 19/02/2011 / Spain / San Juan de Gaztelugatxe / Basque country / crust / intertidal / ASE, VP / SANT-Algae 29191
KR733517 / VPF00578 / 01/08/2012 / Spain / San Román, Santander / Cantabria / rhodolith / Intertidal pool / CP, NS / SANT-Algae 29201
KR708617 / E157 / 1892 / England / Falmouth / Cornwall / rhodolith / No data / G.W.Traill / BM44838 or BM Box 598
Lithophyllumbathyporum / KR733435 / VPF00378B / 19/04/2011 / Spain / Playa Peinzás, Lugo / Galicia / crust / intertidal / ASE, VP / SANT-Algae 29138