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Rhododendron ponticum

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586: 61: 1006:) in areas of mixed woodland. Tensions surrounding the management of these cohabiting species were brought to a head in early December 2022 when prominent arboriculturalists faced strong opposition from machine operators within the estate over correct identification and subsequent management of the plant, culminating in the destruction of a large thicket of laurel. While there remains debate over the associated similarities and differences between the plants, contemporary research indicates the likelihood of a hybridisation between the two species in this niche of woodland, meaning that Japanese laurel may indeed be viewed and treated in a like manner to rhododendron within this habitat niche. 428: 553: 74: 806: 743:, it did not recolonise afterwards and the modern ecology of the island developed without it. Its presence today in Great Britain is due to humans introducing it, and it easily naturalises and becomes a pest in some situations, often covering whole hillsides (especially in 585: 943:, a solitary mining bee. Bees became paralysed and exhibited excessive grooming or other distress behaviours after feeding on Rhododendron nectar, and ate less food than bees fed a control nectar. In contrast the buff-tailed bumblebee ( 949:) was not affected by the rhododendron nectar. It is important not to see Rhododendron as a problem species for honey bees as they actually avoid the flowers owing to their ability to detect the toxin nectar. The toxicity is caused by 839:, and became widely distributed through the commercial nursery trade in the late 18th and early 19th centuries. The roots readily send up suckers from below the graft, often allowing it to overtake the intended grafted rhododendron. 1492: 747:
and the western Scotland). In the British Isles, it colonises moorlands, uplands, shady woodlands (alongside escaped laurels and the native holly) and in areas of acid soils.
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in highland Perthshire. There remains debate over appropriate identification of the plant, particularly where it is interspersed amongst clumps of
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Milne, R.I. and Abbott, R.J., 2000. Origin and evolution of invasive naturalized material of Rhododendron ponticum L. in the British Isles.
1958: 1923: 1667: 1953: 1500: 1250:"Bioassay-guided isolation of anti-inflammatory and antinociceptive principles from a folk remedy, Rhododendron ponticum L. leaves" 883:. Rhododendron control is a key element in nature conservation in those areas. Conservation organisations in Britain now believe 1706: 1745: 1381: 1380:; Brown, Mark J. F.; Power, Eileen F.; Farrell, Iain; Matthews, Sharon M.; Stout, Jane C.; Manson, Jessamyn (November 2015). 1295: 515:
are 3.5 to 5 cm (1.4 to 2.0 in) in diameter, violet-purple, often with small greenish-yellow spots or streaks. The
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spraying. Injection of herbicide into individual plants has been found to be more precise and effective.
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1 which is one of several highly hydroxylated diterpenoid defence chemicals produced in the leaves of
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Honey produced with pollen from the flowers of this plant can be quite poisonous, causing severe
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evidence shows it had a much wider range across most of southern and western Europe before the
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Suckering of the root, together with its abundant seed production, has led to it becoming an
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is one of the most extensively cultivated rhododendrons in western Europe. It is used as an
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is the emblem and symbol of Bulgaria's most exotic National Park – The Strandja mountains
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in the United Kingdom has led to some controversy, particularly within the grounds of
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Erdemoglu, Nurgun; Akkol, Esra Küpeli; Yesilada, Erdem; Calış, Ihsan (2008-09-02).
950: 855: 457: 167: 17: 1864: 1620: 1607: 1382:"Nectar chemistry modulates the impact of an invasive plant on native pollinators" 1303: 793:
in 1763, and later planted as cover for game birds. It is now considered to be an
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also showed that invasive rhododendron nectar was toxic to European honeybees (
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during his travels in the Near East in 1700–02, and so received its name from
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1.5 to 2.5 cm (0.59 to 0.98 in) long, containing numerous small
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http://www.countrysideinfo.co.uk/rhododen.htm#Introduction%20to%20Britain
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growing to 5 m (16 ft) tall, rarely 8 m (26 ft). The
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The range in the Iberian Peninsula is limited to mountain ranges, the
1737: 755: 710: 678: 641: 605: 512: 470: 1552: 1441: 835:. The plants were first grown in Britain in the 1760s, supplied by 1750: 1659: 903: 858:). This poisonous honey plays a significant part in the 2023 film 804: 790: 666: 572: 516: 496: 426: 85: 1646: 1416:
Scott-Brown, AS, Gregory, T, Farrell, IW, Stevenson PC. (2016).
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in humans if consumed in sufficient quantities, and is known as
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Sap from a freshly cut branch can be used to treat toothaches.
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to identify the ancient kingdom on the south shores of the
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forests that covered the peninsula 66 million years ago.
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Tiedeken, Erin Jo; Egan, Paul A.; Stevenson, Philip C.;
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Species of flowering plant in the heath family Ericaceae
1051:. Board of Trustees of the Royal Botanic Gardens, Kew 1565: 831:onto which other more attractive rhododendrons are 1347:"BREAKTHROUGH IN BATTLE AGAINST PROBLEM PONTICUM" 789:. It was introduced to Britain as an ornamental 735:Though the common rhododendron was present in 1327:. Offwell Woodland & Wildlife Trust. 2004 8: 1462:: CS1 maint: multiple names: authors list ( 887:has become "a severe problem" in the native 879:over much of western Europe and in parts of 1325:"Rhododendron: A killer of the Countryside" 827:in its own right, and more frequently as a 1553: 1093: 1091: 536: 59: 48: 1400: 978:) tolerate the toxin and make so-called " 1528:United States Department of Agriculture 1519:Germplasm Resources Information Network 1172: 1170: 1030: 990:Recent efforts to manage the spread of 227: 1455: 1036: 1034: 7: 1800:4340f8b3-da88-4499-84f4-2231cfd246c0 1224:Principles and methods of toxicology 762:, or until about 20,000 years ago. 1535:Centre for Conservation Strategy: 689:). It has also been introduced to 669:) and the other near the southern 25: 1201:Garden Shrubs and Their Histories 1852:urn:lsid:ipni.org:names:333114-1 584: 551: 72: 1353:. 30 July 2004. Archived from 1221:Hayes, Andrew Wallace (2007). 567:Found in central and southern 1: 1544:Danish Rhododendron Society: 1524:Agricultural Research Service 1296:"New flora and fauna for old" 970:. Some species of honey bee ( 765:It was noted by the botanist 1302:. 2000-12-21. Archived from 1254:Journal of Ethnopharmacology 728:. A remnant of the original 288:Rhododendron hyacinthiflorum 1959:Taxa named by Carl Linnaeus 1420:Heliothrips haemorrhoidalis 986:Identification difficulties 968:Heliothrips haemorrhoidalis 767:Joseph Pitton de Tournefort 1975: 1924:Flora of Georgia (country) 1227:. CRC Press. p. 998. 1149:"A adelfeira de Monchique" 1049:Plants of the World Online 657:, one in the southwestern 596:Found around the southern 461:genus of the heath family 29: 1266:10.1016/j.jep.2008.06.021 854:due to toxic diterpenes ( 220: 213: 196: 189: 69:Scientific classification 67: 58: 51: 1954:Plants described in 1762 1430:Functional Plant Biology 649:Distribution and habitat 635:R. p. var. heterophyllum 296:Rhododendron lancifolium 1402:10.1111/1365-2435.12588 925:A study in the journal 407:Rukhadze & Pachulia 383:Rukhadze & Pachulia 371:Rukhadze & Pachulia 359:Rukhadze & Pachulia 347:Rukhadze & Pachulia 335:Rukhadze & Pachulia 272:Rhododendron catesbaeum 813: 785:found it growing with 661:(central and southern 465:. It is native to the 435: 412:Rhododendron speciosum 264:Rhododendron catesbaei 256:Rhododendron adansonii 30:This article is about 1686:Rhododendron ponticum 1597:Rhododendron ponticum 1567:Rhododendron ponticum 1546:Rhododendron ponticum 1537:Rhododendron ponticum 1512:Rhododendron ponticum 1502:Rhododendron ponticum 1495:Rhododendron ponticum 1179:Rhododendron ponticum 1044:Rhododendron ponticum 992:Rhododendron ponticum 817:Rhododendron ponticum 811:Rhododendron ponticum 808: 561:(Boiss. & Reut.) 440:Rhododendron ponticum 430: 400:Rhododendron ponticum 388:Rhododendron ponticum 376:Rhododendron ponticum 364:Rhododendron ponticum 352:Rhododendron ponticum 340:Rhododendron ponticum 328:Rhododendron ponticum 320:Rhododendron odoratum 280:Rhododendron deciduum 200:Rhododendron ponticum 53:Rhododendron ponticum 32:Rhododendron ponticum 1480:, 9(5), pp. 541–556. 1378:Wright, Geraldine A. 861:A Haunting in Venice 801:Cultivation and uses 760:Late Glacial Maximum 655:disjunct populations 653:The species has two 312:Rhododendron obtusum 1424:Rhododendron simsii 1351:Forestry Commission 1177:Cross, JR (1975). " 1153:University of Évora 957:to protect against 940:Andrena carantonica 741:most recent ice age 477:region in northern 449:pontic rhododendron 445:common rhododendron 344:aurantiacomaculatum 248:Hymenanthes pontica 41:Rhododendron luteum 18:Pontic rhododendron 1389:Functional Ecology 1183:Journal of Ecology 1016:Catawbiense hybrid 928:Functional Ecology 814: 718:Caramulo mountains 451:, is a species of 436: 304:Rhododendron lowei 1934:Flora of Portugal 1919:Flora of Bulgaria 1901: 1900: 1821:Open Tree of Life 1559:Taxon identifiers 1478:Molecular Ecology 1436:(12): 1170–1182. 1234:978-0-8493-3778-9 1128:Catalogue of Life 1103:Catalogue of Life 1075:Catalogue of Life 946:Bombus terrestris 687:Northern Caucasus 665:and southwestern 659:Iberian Peninsula 639: 624: 623: 614:Northern Caucasus 577:Province of Cádiz 564: 467:Iberian Peninsula 425: 424: 416: 408: 396: 384: 372: 360: 348: 336: 324: 316: 308: 300: 292: 284: 283:Andrews ex Steud. 276: 268: 260: 252: 244: 240:Azalea lancifolia 236: 16:(Redirected from 1966: 1929:Flora of Lebanon 1894: 1893: 1881: 1880: 1868: 1867: 1855: 1854: 1842: 1841: 1829: 1828: 1816: 1815: 1803: 1802: 1793: 1792: 1780: 1779: 1777:NBNSYS0000003888 1767: 1766: 1754: 1753: 1741: 1740: 1728: 1727: 1715: 1714: 1702: 1701: 1689: 1688: 1676: 1675: 1663: 1662: 1650: 1649: 1637: 1636: 1624: 1623: 1611: 1610: 1601: 1600: 1599: 1586: 1585: 1584: 1554: 1531: 1493:Flora Europaea: 1481: 1474: 1468: 1467: 1461: 1453: 1413: 1407: 1406: 1404: 1386: 1373: 1367: 1366: 1364: 1362: 1343: 1337: 1336: 1334: 1332: 1321: 1315: 1314: 1312: 1311: 1292: 1286: 1285: 1245: 1239: 1238: 1218: 1212: 1207:"Rhododendron"; 1199:Alice M. Coats, 1197: 1191: 1190: 1174: 1165: 1164: 1162: 1160: 1145: 1139: 1138: 1136: 1134: 1120: 1114: 1113: 1111: 1109: 1095: 1086: 1085: 1083: 1081: 1067: 1061: 1060: 1058: 1056: 1038: 877:invasive species 871:Invasive species 825:ornamental plant 795:invasive species 751:Historical range 637: 588: 562: 555: 537: 414: 406: 395:(P.Watson) G.Don 394: 382: 370: 358: 346: 334: 322: 314: 306: 298: 290: 282: 274: 266: 258: 250: 242: 234: 202: 182:R. ponticum 77: 76: 63: 49: 21: 1974: 1973: 1969: 1968: 1967: 1965: 1964: 1963: 1949:Flora of Turkey 1939:Flora of Russia 1904: 1903: 1902: 1897: 1889: 1884: 1876: 1871: 1863: 1858: 1850: 1845: 1837: 1832: 1824: 1819: 1811: 1808:Observation.org 1806: 1798: 1796: 1788: 1783: 1775: 1770: 1762: 1757: 1749: 1744: 1736: 1731: 1723: 1718: 1710: 1705: 1697: 1692: 1684: 1679: 1671: 1666: 1658: 1653: 1645: 1640: 1632: 1627: 1619: 1614: 1606: 1604: 1595: 1594: 1589: 1580: 1579: 1574: 1561: 1508: 1489: 1484: 1475: 1471: 1454: 1442:10.1071/FP16045 1415: 1414: 1410: 1384: 1375: 1374: 1370: 1360: 1358: 1357:on 5 March 2011 1345: 1344: 1340: 1330: 1328: 1323: 1322: 1318: 1309: 1307: 1294: 1293: 1289: 1247: 1246: 1242: 1235: 1220: 1219: 1215: 1198: 1194: 1176: 1175: 1168: 1158: 1156: 1155:. 13 March 2018 1147: 1146: 1142: 1132: 1130: 1122: 1121: 1117: 1107: 1105: 1097: 1096: 1089: 1079: 1077: 1069: 1068: 1064: 1054: 1052: 1040: 1039: 1032: 1028: 1012: 1004:Aucuba japonica 1000:Japanese laurel 996:Taymouth Castle 988: 873: 837:Conrad Loddiges 803: 753: 722:Monchique range 671:Black Sea Basin 651: 598:Black Sea Basin 487: 453:flowering plant 421: 356:brachystamineum 323:Lodd. ex Steud. 251:(L.) H.F.Copel. 243:(Moench) Kuntze 226: 225: 209: 204: 198: 185: 71: 45: 28: 23: 22: 15: 12: 11: 5: 1972: 1970: 1962: 1961: 1956: 1951: 1946: 1944:Flora of Spain 1941: 1936: 1931: 1926: 1921: 1916: 1906: 1905: 1899: 1898: 1896: 1895: 1891:wfo-0000400178 1882: 1869: 1856: 1843: 1830: 1817: 1804: 1794: 1781: 1768: 1755: 1742: 1729: 1716: 1703: 1690: 1677: 1664: 1651: 1638: 1625: 1612: 1602: 1587: 1571: 1569: 1563: 1562: 1557: 1551: 1550: 1541: 1532: 1506: 1498: 1488: 1487:External links 1485: 1483: 1482: 1469: 1408: 1395:(6): 885–893. 1368: 1338: 1316: 1287: 1260:(1): 172–178. 1240: 1233: 1213: 1192: 1166: 1140: 1115: 1087: 1062: 1029: 1027: 1024: 1023: 1022: 1018:– hybrid with 1011: 1008: 987: 984: 972:Apis mellifera 934:Apis mellifera 896:west highlands 872: 869: 802: 799: 783:Clas Alströmer 752: 749: 650: 647: 646: 645: 622: 621: 616:) and central 594: 592:R. p. ponticum 589: 581: 580: 565: 559:R. p. baeticum 556: 548: 547: 544: 541: 486: 483: 423: 422: 420: 419: 418: 417: 409: 397: 385: 380:luteomaculatum 373: 361: 349: 337: 325: 317: 309: 301: 293: 285: 277: 269: 261: 253: 245: 237: 232:Azalea arborea 223: 222: 221: 218: 217: 211: 210: 205: 194: 193: 187: 186: 179: 177: 173: 172: 165: 161: 160: 155: 151: 150: 145: 141: 140: 135: 128: 127: 122: 115: 114: 109: 102: 101: 96: 89: 88: 83: 79: 78: 65: 64: 56: 55: 36:Azalea pontica 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 1971: 1960: 1957: 1955: 1952: 1950: 1947: 1945: 1942: 1940: 1937: 1935: 1932: 1930: 1927: 1925: 1922: 1920: 1917: 1915: 1912: 1911: 1909: 1892: 1887: 1883: 1879: 1874: 1870: 1866: 1861: 1857: 1853: 1848: 1844: 1840: 1835: 1831: 1827: 1822: 1818: 1814: 1809: 1805: 1801: 1795: 1791: 1786: 1782: 1778: 1773: 1769: 1765: 1760: 1756: 1752: 1747: 1743: 1739: 1734: 1730: 1726: 1721: 1717: 1713: 1708: 1704: 1700: 1695: 1691: 1687: 1682: 1678: 1674: 1669: 1665: 1661: 1656: 1652: 1648: 1643: 1639: 1635: 1630: 1626: 1622: 1617: 1613: 1609: 1603: 1598: 1592: 1588: 1583: 1577: 1573: 1572: 1570: 1568: 1564: 1560: 1555: 1549: 1547: 1542: 1540: 1538: 1533: 1529: 1525: 1521: 1520: 1515: 1513: 1507: 1505: 1503: 1499: 1497: 1496: 1491: 1490: 1486: 1479: 1473: 1470: 1465: 1459: 1451: 1447: 1443: 1439: 1435: 1431: 1427: 1425: 1421: 1412: 1409: 1403: 1398: 1394: 1390: 1383: 1379: 1372: 1369: 1356: 1352: 1348: 1342: 1339: 1326: 1320: 1317: 1306:on 2001-07-28 1305: 1301: 1300:The Economist 1297: 1291: 1288: 1283: 1279: 1275: 1271: 1267: 1263: 1259: 1255: 1251: 1244: 1241: 1236: 1230: 1226: 1225: 1217: 1214: 1210: 1206: 1203:(1964) 1992, 1202: 1196: 1193: 1189:(1): 345–364. 1188: 1184: 1180: 1173: 1171: 1167: 1154: 1150: 1144: 1141: 1129: 1125: 1119: 1116: 1104: 1100: 1094: 1092: 1088: 1076: 1072: 1066: 1063: 1050: 1047: 1045: 1037: 1035: 1031: 1025: 1021: 1017: 1014: 1013: 1009: 1007: 1005: 1001: 997: 993: 985: 983: 981: 977: 973: 969: 966: 965: 960: 956: 952: 948: 947: 942: 941: 936: 935: 930: 929: 923: 921: 917: 913: 909: 905: 901: 897: 893: 890: 886: 882: 878: 870: 868: 865: 863: 862: 857: 856:grayanotoxins 853: 849: 845: 840: 838: 834: 830: 826: 822: 818: 812: 807: 800: 798: 796: 792: 788: 784: 780: 776: 772: 768: 763: 761: 757: 750: 748: 746: 742: 739:prior to the 738: 737:Great Britain 733: 731: 727: 723: 719: 714: 712: 708: 704: 703:British Isles 700: 696: 692: 688: 684: 680: 676: 672: 668: 664: 660: 656: 648: 643: 636: 633: 632: 631: 629: 619: 615: 611: 607: 603: 599: 595: 593: 590: 587: 583: 582: 578: 574: 571:and southern 570: 566: 560: 557: 554: 550: 549: 546:Distribution 545: 542: 539: 538: 535: 533: 528: 526: 522: 518: 514: 510: 506: 502: 498: 495: 491: 484: 482: 480: 476: 472: 469:in southwest 468: 464: 460: 459: 454: 450: 446: 442: 441: 433: 429: 413: 410: 405: 401: 398: 393: 389: 386: 381: 377: 374: 369: 365: 362: 357: 353: 350: 345: 341: 338: 333: 329: 326: 321: 318: 313: 310: 305: 302: 297: 294: 289: 286: 281: 278: 273: 270: 265: 262: 257: 254: 249: 246: 241: 238: 233: 230: 229: 228: 219: 216: 212: 208: 203: 201: 195: 192: 191:Binomial name 188: 184: 183: 178: 175: 174: 171: 170: 166: 163: 162: 159: 156: 153: 152: 149: 146: 143: 142: 139: 136: 133: 130: 129: 126: 123: 120: 117: 116: 113: 110: 107: 104: 103: 100: 99:Tracheophytes 97: 94: 91: 90: 87: 84: 81: 80: 75: 70: 66: 62: 57: 54: 50: 47: 43: 42: 37: 33: 19: 1914:Rhododendron 1566: 1545: 1536: 1517: 1511: 1501: 1494: 1477: 1472: 1458:cite journal 1433: 1429: 1423: 1422:(Bouché) in 1419: 1411: 1392: 1388: 1371: 1359:. 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Retrieved 1048: 1043: 1019: 1003: 991: 989: 975: 971: 967: 962: 955:Rhododendron 954: 951:grayanotoxin 944: 938: 932: 926: 924: 914:in southern 884: 874: 866: 859: 841: 820: 816: 815: 810: 764: 754: 734: 726:Aljibe range 715: 652: 634: 625: 591: 558: 529: 492:is a dense, 489: 488: 458:Rhododendron 456: 448: 444: 439: 438: 437: 431: 411: 403: 399: 391: 387: 379: 375: 367: 363: 355: 351: 343: 339: 332:angustilobum 331: 327: 319: 311: 303: 295: 287: 279: 271: 263: 259:E.-A.Baumann 255: 247: 239: 231: 199: 197: 181: 180: 169:Rhododendron 168: 131: 118: 105: 92: 52: 46: 40: 35: 31: 1839:kew-2418394 1733:iNaturalist 1591:Wikispecies 1159:21 November 1133:21 November 1108:21 November 1080:21 November 1020:R. ponticum 961:– e.g. the 885:R. ponticum 881:New Zealand 848:bradycardia 844:hypotension 809:Closeup of 730:laurissilva 707:Netherlands 677:, northern 640:– Found in 604:, northern 563:Hand.-Mazz. 530:It has two 490:R. ponticum 485:Description 432:R. ponticum 404:parviflorum 112:Angiosperms 1908:Categories 1834:Plant List 1539:in Britain 1310:2008-12-14 1026:References 959:herbivores 912:heathlands 628:variegated 532:subspecies 275:Dum.Cours. 1548:in Europe 1274:0378-8741 980:mad honey 976:caucasica 920:herbicide 910:, and on 852:mad honey 829:rootstock 775:Black Sea 745:Snowdonia 673:(eastern 630:variety: 600:(eastern 519:is a dry 509:evergreen 499:or small 494:suckering 479:West Asia 463:Ericaceae 443:, called 368:crispatum 176:Species: 158:Ericaceae 82:Kingdom: 1878:12303137 1873:Tropicos 1751:333114-1 1576:Wikidata 1450:32480536 1282:18638535 1055:10 March 1010:See also 974:sub spp 900:Scotland 892:oakwoods 889:Atlantic 821:baeticum 787:oleander 771:Linnaeus 724:and the 675:Bulgaria 663:Portugal 638:R. Ansin 602:Bulgaria 575:(in the 569:Portugal 475:Caucasus 473:and the 315:P.Watson 267:J.Forbes 215:Synonyms 154:Family: 148:Ericales 138:Asterids 125:Eudicots 1699:7327990 1647:6945035 1582:Q557928 916:England 908:Ireland 902:and in 894:of the 833:grafted 819:subsp. 699:Belgium 695:Myanmar 691:Madeira 683:Georgia 618:Lebanon 610:Georgia 521:capsule 513:flowers 455:in the 415:Salisb. 392:obtusum 164:Genus: 144:Order: 86:Plantae 1865:100610 1826:702552 1797:NZOR: 1673:169459 1621:190561 1608:142897 1605:APDB: 1448:  1361:30 May 1331:30 May 1280:  1272:  1231:  964:Thrips 779:Pontus 756:Fossil 720:, the 711:France 701:, the 685:, and 679:Turkey 642:Turkey 626:And a 606:Turkey 505:leaves 471:Europe 434:flower 307:Loudon 299:Moench 291:Steud. 38:, see 34:. 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Index

Pontic rhododendron
Rhododendron luteum

Scientific classification
Edit this classification
Plantae
Tracheophytes
Angiosperms
Eudicots
Asterids
Ericales
Ericaceae
Rhododendron
Binomial name
L.
Synonyms

flowering plant
Rhododendron
Ericaceae
Iberian Peninsula
Europe
Caucasus
West Asia
suckering
shrub
tree
leaves
evergreen
flowers

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