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Meridianelia

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is classified in the small fungal family Elixiaceae based on its genetic and structural characteristics. The genus is notable for its unique reproductive structures and its apparent rarity, having been found in only a few locations despite growing in a relatively common type of forest.
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is a lichen genus characterised by a crust-like, thin outer layer (thallus) that forms spreading colonies up to 10–20 cm wide. The thallus is dull greyish white, somewhat glossy, and 120–200 ÎĽm thick. Initially smooth, it develops small wart-like structures
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is sparse. It is absent in areas where undershrubs form a closed cover. Despite its conspicuous appearance where present, the species has been encountered infrequently, suggesting it may have specific ecological requirements that are not yet fully understood.
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are roundish to irregularly angular, 0.3–1 mm wide, and generally clustered in groups of 2–3 (occasionally up to 5). The surface of the disc starts deeply concave, becoming flat to wavy, dark grey, and covered with a thick whitish powder-like coating
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boulder fields at elevations around 950–1010 metres above sea level. The species forms conspicuous white patches up to 20 cm wide on the lowermost 1–2 metres of eucalypt trunks, as well as on larger individuals of
522:). They are thin-walled, without a gel coating, and round to oval in shape, typically measuring 14–23 by 9–20 ÎĽm, often containing a single, large bubble-like structure (vacuole). Chemically, the lichen contains 503:). The asci are elongated and club-shaped, 130–170 by 17–25 ÎĽm, containing 8 spores each. They have a specialised structure at the tip for releasing spores, resembling those found in the related genus 590: 456:
is a symbiotic organism, containing a green algal partner (photobiont) with round to oval cells, 9–20 by 9–16 ÎĽm, typically clustered in bundles within the thallus.
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to Elixiaceae necessitated a recircumscription of the family to accommodate the morphological differences between the two genera. The family is now defined as lichenised
584: 523: 626: 608: 338:. However, in some later (2018) phylogenetic analyses, the authors note that the current arrangement "was not significantly supported by any analyses", and that " 614: 495:), 160–200 ÎĽm thick, containing scattered oil droplets and topped by a grey-green layer 30–50 ÎĽm thick. Within this layer are spore-producing sacs ( 620: 602: 526:, but does not show any colour changes when tested with common lichen identification chemicals. Another type of reproductive structure common in lichens, 316: 989: 632: 1228: 1162: 1015: 1084: 937: 393:-type ascus. This ascus structure, along with other anatomical and molecular evidence, justified the creation of a new genus separate from 1223: 452:) 0.5–1 mm wide, and may become worn, eroded, or develop powdery reproductive structures (soredia) over time. Like all lichens, 1136: 976: 290:), referring to its geographic distribution in Tasmania. It also alludes to the similarity of this lichen to members of the genus 1075: 1020: 324:
in Elixiaceae. The placement was further corroborated with the description of the third Elixiaceae species in 2010,
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Wijayawardene, N.N.; Hyde, K.D.; Dai, D.Q.; Sánchez-GarcĂ­a, M.; Goto, B.T.; Saxena, R.K.; et al. (2022).
516: 484:), measuring up to about 10 ÎĽm thick, pale greyish green, composed of interwoven thread-like structures ( 459:
The lichen's reproductive structures (apothecia) are disc-shaped and partially immersed in the thallus. These
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is known to occur only in Tasmania, Australia. It has been recorded in open subalpine woodland dominated by
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are very delicate, highly branched, and intertwined, 0.8–1 ÎĽm thick, with narrowed tips.
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was collected by Kantvilas on December 17, 2003. It was found 1 km southeast of Lake Fenton,
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prefers sunny conditions and is most frequently found on trees where the
447: 409: 1141: 981: 508: 500: 476:). The apothecium is surrounded by a very thin layer of fungal tissue ( 471: 382: 190: 98: 68: 462: 1154: 1007: 637: 565: 48: 884: 1149: 1054: 1002: 907: 648: 548: 527: 492: 363: 292: 261: 216: 172: 168: 761: 558:
with loose, papery bark. It has also been found at the margins of
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Spribille, Toby; Lumbsch, H. Thorsten (2010). "A new species of
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Bendiksby, Mika; Reese Næsborg, Rikke; Timdal, Einar (2018).
496: 485: 186: 833: 840:(Umbilicariaceae), a new lichen species from the canopy of 796: 697:, a new genus in the Elixiaceae (Ascomycota) from Tasmania" 661: 514:
The spores are arranged in a single row within the ascus (
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Inside the apothecium is a colourless reproductive layer (
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differs significantly in its ascus structure. The asci in
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honours the Australian lichenologist Patrick McCarthy.
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with an intensely amyloid cap, characteristic of the
827: 412:with a crustose thallus containing a coccoid green 252:based on collections from Tasmania, Australia. The 691:Kantvilas, Gintaras; Lumbsch, H. Thorsten (2009). 582:Associated lichen species in its habitat include 1195: 802: 690: 764:"Outline of Fungi and fungus-like taxa – 2021" 428:ascospores, and either aliphatic acids or no 533: 420:, hemiangiocarpous apothecia, eight-spored 275: 865: 855: 787: 530:, has not been observed in this genus. 1196: 270:in subalpine woodland. The genus name 889: 888: 1229:Taxa named by Helge Thorsten Lumbsch 219:, Australia. Discovered in 2003 and 193:. It consists of the single species 207:. This lichen forms greyish-white, 13: 719: 14: 1240: 379:have a prominent, weakly amyloid 1224:Taxa named by Gintaras Kantvilas 342:monophyly was not supported, as 308:mitochondrial small subunit rDNA 35: 807:(Umbilicariales) from Greece". 361:While superficially similar to 435: 244:in 2009 by the lichenologists 158:Kantvilas & Lumbsch (2009) 1: 655: 7: 346:grouped with accessions of 334:, formed a clade sister to 231: 16:Single-species lichen genus 10: 1245: 274:is derived from the Latin 215:in subalpine woodlands of 1076:Meridianelia maccarthyana 1046:Meridianelia maccarthyana 1044: 897: 857:10.3897/mycokeys.30.22271 821:10.1017/s0024282910000058 780:10.5943/mycosphere/13/1/2 743:: Leiden, the Netherlands 713:10.1017/S0024282909008500 585:Mycoblastus campbellianus 572:Meridianelia maccarthyana 539:Meridianelia maccarthyana 499:) and sterile filaments ( 258:Meridianelia maccarthyana 196:Meridianelia maccarthyana 167: 163: 152:Meridianelia maccarthyana 148: 141: 32:Scientific classification 30: 23: 534:Habitat and distribution 221:scientifically described 561:Nothofagus cunninghamii 547:, typically growing on 524:protolichesterinic acid 330:, which, together with 314:clusters strongly with 1219:Taxa described in 2009 627:Trapeliopsis granulosa 591:M. coniophorellus 310:sequences showed that 276: 1214:Umbilicariales genera 615:Pseudoramonia richeae 842:Sequoia sempervirens 838:Xylopsora canopeorum 544:Eucalyptus coccifera 515: 477: 469: 460: 445: 413: 380: 267:Eucalyptus coccifera 171:: near Lake Fenton, 134:M. maccarthyana 609:P. pertractata 424:-type asci, simple 250:H. Thorsten Lumbsch 621:Ramboldia stuartii 603:Pertusaria jamesii 246:Gintaras Kantvilas 1191: 1190: 1176:Open Tree of Life 1029:Open Tree of Life 891:Taxon identifiers 809:The Lichenologist 736:Catalogue of Life 701:The Lichenologist 430:lichen substances 354:sp. and excluded 203:(bark-dwelling), 178: 177: 123: 1236: 1184: 1183: 1171: 1170: 1158: 1157: 1145: 1144: 1132: 1131: 1119: 1118: 1106: 1105: 1093: 1092: 1080: 1079: 1078: 1065: 1064: 1063: 1037: 1036: 1024: 1023: 1011: 1010: 998: 997: 985: 984: 972: 971: 959: 958: 946: 945: 933: 932: 931: 918: 917: 916: 886: 885: 880: 879: 869: 859: 831: 825: 824: 800: 794: 793: 791: 759: 753: 752: 750: 748: 723: 717: 716: 688: 564:-dominated cool 519: 481: 473: 464: 449: 417: 404:The addition of 384: 332:E. flexella 289: 286: 283: 279: 154: 114: 40: 39: 21: 20: 1244: 1243: 1239: 1238: 1237: 1235: 1234: 1233: 1194: 1193: 1192: 1187: 1179: 1174: 1166: 1161: 1153: 1148: 1140: 1135: 1127: 1122: 1114: 1109: 1101: 1096: 1088: 1083: 1074: 1073: 1068: 1059: 1058: 1053: 1040: 1032: 1027: 1019: 1014: 1006: 1001: 993: 988: 980: 975: 967: 962: 954: 949: 941: 936: 927: 926: 921: 912: 911: 906: 893: 883: 832: 828: 801: 797: 789:1854/LU-8754813 760: 756: 746: 744: 725: 724: 720: 689: 662: 658: 640:and species of 536: 521: 483: 475: 466: 451: 438: 419: 386: 317:Elixia flexella 298:species epithet 287: 284: 281: 234: 205:crustose lichen 159: 156: 150: 137: 113: 79:Lecanoromycetes 34: 17: 12: 11: 5: 1242: 1232: 1231: 1226: 1221: 1216: 1211: 1206: 1204:Umbilicariales 1189: 1188: 1186: 1185: 1172: 1159: 1146: 1133: 1120: 1107: 1094: 1081: 1066: 1050: 1048: 1042: 1041: 1039: 1038: 1025: 1012: 999: 986: 973: 960: 947: 934: 919: 903: 901: 895: 894: 882: 881: 826: 815:(4): 365–371. 795: 774:(1): 53–453 . 754: 718: 707:(3): 261–270. 659: 657: 654: 535: 532: 437: 434: 356:Elixia cretica 327:Elixia cretica 256:(holotype) of 233: 230: 189:in the family 176: 175: 165: 164: 161: 160: 157: 146: 145: 139: 138: 131: 129: 125: 124: 106: 102: 101: 96: 92: 91: 89:Umbilicariales 86: 82: 81: 76: 72: 71: 66: 62: 61: 56: 52: 51: 46: 42: 41: 28: 27: 15: 9: 6: 4: 3: 2: 1241: 1230: 1227: 1225: 1222: 1220: 1217: 1215: 1212: 1210: 1209:Lichen genera 1207: 1205: 1202: 1201: 1199: 1182: 1177: 1173: 1169: 1164: 1160: 1156: 1151: 1147: 1143: 1138: 1134: 1130: 1125: 1121: 1117: 1112: 1108: 1104: 1099: 1095: 1091: 1086: 1082: 1077: 1071: 1067: 1062: 1056: 1052: 1051: 1049: 1047: 1043: 1035: 1030: 1026: 1022: 1017: 1013: 1009: 1004: 1000: 996: 991: 987: 983: 978: 974: 970: 965: 961: 957: 952: 948: 944: 939: 935: 930: 924: 920: 915: 909: 905: 904: 902: 900: 896: 892: 887: 877: 873: 868: 863: 858: 853: 849: 845: 843: 839: 830: 822: 818: 814: 810: 806: 799: 790: 785: 781: 777: 773: 769: 765: 758: 742: 738: 737: 732: 730: 722: 714: 710: 706: 702: 698: 696: 687: 685: 683: 681: 679: 677: 675: 673: 671: 669: 667: 665: 660: 653: 651: 650: 645: 644: 639: 635: 634: 633:Usnea oncodes 629: 628: 623: 622: 617: 616: 611: 610: 605: 604: 599: 598: 593: 592: 587: 586: 580: 577: 573: 569: 567: 563: 562: 557: 556: 550: 546: 545: 540: 531: 529: 525: 520: 512: 510: 506: 502: 498: 494: 489: 487: 482: 474: 465: 457: 455: 450: 442: 433: 431: 427: 423: 418: 411: 407: 402: 400: 396: 392: 391: 385: 378: 374: 370: 369:morphological 366: 365: 359: 357: 353: 349: 345: 341: 337: 333: 329: 328: 323: 319: 318: 313: 309: 305: 301: 299: 295: 294: 278: 273: 269: 268: 263: 259: 255: 254:type specimen 251: 247: 243: 242:circumscribed 239: 229: 226: 222: 218: 214: 210: 206: 202: 198: 197: 192: 188: 184: 183: 174: 170: 166: 162: 155: 153: 147: 144: 143:Binomial name 140: 136: 135: 130: 127: 126: 121: 117: 112: 111: 107: 104: 103: 100: 97: 94: 93: 90: 87: 84: 83: 80: 77: 74: 73: 70: 67: 64: 63: 60: 57: 54: 53: 50: 47: 44: 43: 38: 33: 29: 26: 22: 19: 1045: 929:Meridianelia 899:Meridianelia 898: 850:(30): 1–15. 847: 841: 837: 829: 812: 808: 804: 798: 771: 767: 757: 745:. Retrieved 741:Species 2000 734: 729:Meridianelia 728: 721: 704: 700: 695:Meridianelia 694: 647: 641: 631: 625: 619: 613: 607: 601: 595: 589: 583: 581: 571: 570: 568:rainforest. 559: 553: 542: 538: 537: 513: 504: 490: 458: 454:Meridianelia 453: 441:Meridianelia 440: 439: 421: 406:Meridianelia 405: 403: 398: 394: 388: 377:Meridianelia 376: 373:Meridianelia 372: 362: 360: 355: 351: 347: 344:Meridianelia 343: 339: 336:Meridianelia 335: 331: 325: 322:Meridianelia 321: 315: 312:Meridianelia 311: 306:analysis of 304:Phylogenetic 302: 291: 272:Meridianelia 271: 265: 257: 238:Meridianelia 237: 235: 225:Meridianelia 224: 213:on tree bark 195: 194: 185:is a fungal 182:Meridianelia 181: 180: 179: 151: 149: 133: 132: 110:Meridianelia 109: 108: 25:Meridianelia 24: 18: 1070:Wikispecies 923:Wikispecies 597:Ochrolechia 576:understorey 436:Description 410:ascomycetes 348:E. flexella 201:corticolous 1198:Categories 768:Mycosphere 656:References 638:bryophytes 518:uniseriate 509:paraphyses 501:paraphyses 416:photobiont 371:features, 277:meridianus 236:The genus 209:crust-like 191:Elixiaceae 99:Elixiaceae 69:Ascomycota 65:Division: 1085:AusLichen 1061:Q21319759 938:AusLichen 914:Q21226646 747:27 August 600:species, 566:temperate 480:excipulum 280:(meaning 223:in 2009, 128:Species: 116:Kantvilas 55:Kingdom: 49:Eukaryota 1150:MycoBank 1124:Fungorum 1116:11950205 1090:30018444 1055:Wikidata 1003:MycoBank 964:Fungorum 943:30018443 908:Wikidata 876:29559828 848:MycoKeys 649:Cladonia 549:dolerite 528:pycnidia 493:hymenium 448:verrucae 399:Trapelia 367:in some 364:Trapelia 293:Trapelia 285:southern 262:Tasmania 232:Taxonomy 217:Tasmania 211:growths 173:Tasmania 169:Holotype 95:Family: 45:Domain: 1142:6755090 1034:5262614 1021:1520788 995:1465982 982:6755089 867:5804297 555:Olearia 426:hyaline 120:Lumbsch 105:Genus: 85:Order: 75:Class: 1181:148147 1168:623279 1155:513001 1129:513001 1008:513000 969:513000 874:  864:  805:Elixia 643:Cladia 630:, and 507:. The 505:Elixia 486:hyphae 472:pruina 422:Elixia 395:Elixia 390:Elixia 383:tholus 352:Elixia 340:Elixia 296:. The 122:(2009) 118:& 1103:6QZDD 990:IRMNG 463:discs 187:genus 59:Fungi 1163:NCBI 1137:GBIF 1016:NCBI 977:GBIF 956:5P9B 872:PMID 749:2024 646:and 497:asci 397:and 350:and 248:and 240:was 199:, a 1111:EoL 1098:CoL 951:CoL 862:PMC 852:doi 817:doi 784:hdl 776:doi 709:doi 488:). 358:." 1200:: 1178:: 1165:: 1152:: 1139:: 1126:: 1113:: 1100:: 1087:: 1072:: 1057:: 1031:: 1018:: 1005:: 992:: 979:: 966:: 953:: 940:: 925:: 910:: 870:. 860:. 846:. 813:42 811:. 782:. 772:13 770:. 766:. 739:. 733:. 705:41 703:. 699:. 663:^ 652:. 624:, 618:, 612:, 606:, 594:, 588:, 432:. 401:. 878:. 854:: 844:" 836:" 823:. 819:: 792:. 786:: 778:: 751:. 731:" 727:" 715:. 711:: 693:" 468:( 444:( 288:' 282:'

Index

Scientific classification
Edit this classification
Eukaryota
Fungi
Ascomycota
Lecanoromycetes
Umbilicariales
Elixiaceae
Meridianelia
Kantvilas
Lumbsch
Binomial name
Holotype
Tasmania
genus
Elixiaceae
corticolous
crustose lichen
crust-like
on tree bark
Tasmania
scientifically described
circumscribed
Gintaras Kantvilas
H. Thorsten Lumbsch
type specimen
Tasmania
Eucalyptus coccifera
Trapelia
species epithet

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