Knowledge (XXG)

Tsuga heterophylla

Source πŸ“

292:) reaching a maximum height of 59 m (194 ft). The bark is brown, thin, and furrowed (outwardly appearing similar to that of Douglas-fir). The crown is a very neat broad conic shape in young trees with a strongly drooping lead shoot, becoming cylindrical in older trees, which may have no branches in the lowest 30–40 m (100–130 ft). At all ages, it is readily distinguished by the pendulous branchlet tips. The shoots are very pale buff-brown, almost white, with pale pubescence about 1 millimetre ( 544: 42: 227: 502:–2 in) tall, and two-year-old seedlings 10–20 cm (4–8 in) tall. Once established, saplings in full light may have an average growth rate of 50–120 cm (20–47 in) (rarely 140 cm, 55 in) annually until they are 20–30 m (65–100 ft) tall, and in good conditions still 30–40 cm (12–16 in) annually when 40–50 m (130–165 ft) tall. The tallest specimen, 82.83 m (271 ft 9 in) tall, is in 86: 572: 556: 520: 61: 532: 871:
eggs during the spring spawn in southeast Alaska. The boughs provide an easily collectible surface for the eggs to attach to as well as providing a distinctive taste. This practice originates from traditional gathering methods used by Native Alaskans from southeast Alaska, specifically the
1325: 707:). It is capable of associating with wood-decay fungi in addition to soil fungi; this enables its seedlings to survive on rotting stumps and logs. Older forests are damaged by rot-causing fungi, 614:. Valleys it can be found in usually receive at least 80 cm (31 in) of rain annually. It mostly grows at low altitudes, from sea level to 600 m (2,000 ft). In western 662:, where they can persist for decades waiting to exploit a gap in the canopy. They eventually replace these conifers, which are relatively shade-intolerant, in climax forest. However, 441: in) long. The immature cones are green, maturing gray-brown 5–7 months after pollination. They are usually plentiful enough to cover the ground beneath the tree. The abundant 634:, it grows up to 1,500 m (4,900 ft), particularly on north-facing slopes. In the interior part of its range in Idaho, it can be found up to 1,800 m (5,900 ft). 2063: 353:
with only a narrow green midrib between the bands. They are arranged spirally on the shoots but are twisted at the base to lie in two ranks on either side of the shoot. The
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growing to 50–70 metres (165–230 feet) tall, exceptionally 83 m (273 ft), and with a trunk diameter of up to 2.7 m (9 ft). It is the largest species of
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can be collected by scraping slabs of removed bark. The resulting shavings can be eaten immediately, or can be dried and pressed into bread, as was done by
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in its native habitats and along the U.S. Pacific Coast, where its best reliability is seen in wetter regions. In relatively dry areas, as at
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When planted on the banks of a river, western hemlock can help reduce erosion. Outside of its natural range, the tree is of importance in
2068: 852:. The inner bark was eaten by some Native American tribes as an emergency food, and the bark was cooked to make medicinal extracts for 2093: 1578: 1435: 1042: 503: 1958: 1653: 1451: 1989: 1684: 1067: 2078: 1718: 801:
Until the early 1920s, the tree was largely ignored for use as lumber due to its presumed similarity to the poor-quality
1203: 678:(mountain hemlock), seeming to take on some of its characteristics although there is no hard evidence of hybridization. 606:
tree throughout the region, along with many of its large coniferous associates. The species is closely associated with
1842: 776: 991: 510:(United States). The species is long-lived, especially at higher elevations, with trees over 1,200 years old known. 349:
margin and a bluntly acute apex. They are mid to dark green above; the underside has two distinctive white bands of
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tree; among associated species in the Pacific Northwest, it is matched or exceeded in shade tolerance only by
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and shallow roots makes it susceptible to fire. At higher elevations, the species can be found mingling with
85: 703: 697: 217: 1606: 1520: 864:. The bark could also be boiled to make dark red dyes to make fishing nets and lines less visible to fish. 1601: 1531: 1482: 519: 357:
appear on trees over about 25 years old; they are small, pendulous, slenderly cylindrical, 14–30 mm (
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will create larger openings in the forest where these other species can then regenerate. Its thin
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production; it is used for making doors, joinery, and furniture. Its fiber is used to make
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in some parts of Great Britain and New Zealandβ€”not so extensively as to be considered an
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Tender new-growth needles can be chewed directly or made into a bitter tea, rich in
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It can also be found in large gardens in northwest Europe and southern New Zealand.
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Initial growth is slow; one-year-old seedlings are commonly only 3–5 centimetres (
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native to the west coast of North America, with its northwestern limit on the
123: 1583: 1565: 880: 654:. Young plants typically grow up under the canopy of other conifers such as 580: 278: 2015: 1860: 1311: 1253: 1127:
Northwest Trees: Identifying & Understanding the Region's Native Trees
2010: 1904: 1855: 1499: 1326:"Fungi from decayed wood as ectomycorrhizal symbionts of western hemlock" 806: 795: 764: 667: 163: 1772: 610:, and most of its range is less than 100 kilometres (62 miles) from the 1937: 1619: 1303: 868: 465: in) long, with a slender, pale-brown wing measuring 7–9 mm ( 346: 281: 153: 143: 133: 1645: 756: 736: 603: 421: in) broad. They have 15–25 thin, flexible scales 7–13 mm ( 1476: 1295: 345: in) broad, strongly flattened in cross-section, with a finely 1963: 1658: 1570: 1004: 814: 810: 663: 570: 350: 285: 266: 254: 173: 97: 1557: 768: 712: 442: 1480: 805:. Since then, it has been greatly utilized for timber (as a 549:
Branch with mature seed cones that have released their seeds
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Dunham, Susie M.; O'Dell, Thomas E.; Molina, Randy (2006).
401: in) broad when closed, opening to 18–25 mm ( 972:. Greensboro, North Carolina: National Plant Data Team 1375:. Royal Horticultural Society. July 2017. p. 103 1223:"Forest stand age and the occurrence of chanterelle ( 771:), in a moist, acidic soil. It is also cultivated in 1188:. In Burns, Russell M.; Honkala, Barbara H. (eds.). 1894: 1489: 1423:
Western Forests (The Audubon Society Nature Guides)
883:(similar to some other hemlock and pine species). 1035:Pinaceae. Drawings and Descriptions of the Genera 261:, Alaska, and its southeastern limit in northern 1227:) species in Oregon's central Cascade Mountains" 867:Western hemlocks have been submerged to collect 1124:Arno, Stephen F.; Hammerly, Ramona P. (2020) . 1210:(USDA) – via Southern Research Station. 936:10.2305/IUCN.UK.2013-1.RLTS.T42435A2980087.en 8: 2064:Trees of the West Coast of the United States 622:is normally dominant. For example, in the 1477: 1396:"A basic guide to softwoods and hardwoods" 305:The leaves are needle-like, 5–23 mm ( 225: 59: 40: 31: 1165:Tallest known Hemlock, Tsuga heterophylla 934: 1175: 1173: 1162:Tallest Hemlock, M. D. Vaden, Arborist: 1029: 1027: 1025: 1001:Botanical Society of Britain and Ireland 735:The bark has long served as a source of 1208:United States Department of Agriculture 903: 515: 1119: 1117: 1115: 1113: 1111: 1109: 1107: 1105: 1103: 1101: 1099: 775:regions worldwide. It has gained the 269:species name means 'variable leaves'. 1097: 1095: 1093: 1091: 1089: 1087: 1085: 1083: 1081: 1079: 970:The PLANTS Database (plants.usda.gov) 7: 1747:59a5cf33-1113-413d-bdfb-a8e439686e7d 1057: 1055: 1053: 1051: 751:Western hemlock is cultivated as an 2049:IUCN Red List least concern species 922:IUCN Red List of Threatened Species 1276:"Habitat and host associations of 685:associations with some well-known 325: in) long and 1.5–2 mm ( 25: 1130:(field guide ed.). Seattle: 504:Prairie Creek Redwoods State Park 2003:urn:lsid:ipni.org:names:261541-1 1835:urn:lsid:ipni.org:names:260297-2 554: 542: 530: 518: 381: in) long and 7–8 mm ( 84: 2084:Garden plants of North America 2074:Trees of mild maritime climate 1: 2054:Pacific temperate rainforests 1274:Trappe, MJ (May–June 2004). 1246:10.1016/j.mycres.2006.09.007 1204:United States Forest Service 590:is an integral component of 1456:Washington State Government 1426:. New York: Knopf. p.  777:Royal Horticultural Society 715:-consuming insects such as 626:in and around southeastern 575:The species often grows on 277:Western hemlock is a large 2110: 2069:Flora of the Cascade Range 1037:. Koeltz Scientific Books 761:Victoria, British Columbia 642:Western hemlock is a very 602:. It is also an important 2094:Trees of Northern America 1420:Whitney, Stephen (1985). 1394:Buckley, Michael (2005). 1370:"AGM Plants - Ornamental" 288:, with the next largest ( 263:Sonoma County, California 233: 224: 202: 195: 81:Scientific classification 79: 57: 48: 39: 34: 1196:Silvics of North America 567:Distribution and habitat 445:are brown, 2–3 mm ( 1280:in northwestern Oregon" 1278:Craterellus tubaeformis 891:Western hemlock is the 704:Craterellus tubaeformis 1344:"RHS Plant Selector – 817:and various plastics. 689:such as chanterelles ( 681:Western hemlock forms 584: 251:western hemlock-spruce 1180:Packee, E.C. (1990). 1061:Gymnosperm Database: 781:Award of Garden Merit 692:Cantharellus formosus 608:temperate rainforests 574: 2079:Least concern plants 1401:. worldhardwoods.com 1234:Mycological Research 1134:. pp. 110–117. 929:: e.T42435A2980087. 724:Lambdina fiscellaria 594:forests west of the 188:T. heterophylla 1462:on 15 November 2007 1033:Farjon, A. (1990). 911:Farjon, A. (2013). 676:T. mertensiana 577:coarse woody debris 51:Conservation status 1896:Abies heterophylla 1796:tsuga-heterophylla 1521:Tsuga heterophylla 1491:Tsuga heterophylla 1346:Tsuga heterophylla 1263:on 14 August 2011. 1184:Tsuga heterophylla 1132:Mountaineers Books 1070:2005-09-24 at the 1064:Tsuga heterophylla 964:Tsuga heterophylla 915:Tsuga heterophylla 698:C. subalbidus 652:Pacific silver fir 624:Columbia Mountains 620:western white pine 585: 253:, is a species of 242:Tsuga heterophylla 206:Tsuga heterophylla 27:Species of conifer 2036: 2035: 1781:Open Tree of Life 1483:Taxon identifiers 1332:on 13 March 2018. 1141:978-1-68051-329-5 836:Food and medicine 718:Acleris gloverana 592:Pacific Northwest 238: 237: 74: 16:(Redirected from 2101: 2089:Ornamental trees 2029: 2028: 2019: 2018: 2006: 2005: 1993: 1992: 1980: 1979: 1967: 1966: 1954: 1953: 1941: 1940: 1928: 1927: 1915: 1914: 1913: 1887: 1886: 1874: 1873: 1864: 1863: 1851: 1850: 1838: 1837: 1825: 1824: 1812: 1811: 1799: 1798: 1789: 1788: 1776: 1775: 1763: 1762: 1750: 1749: 1740: 1739: 1727: 1726: 1724:NBNSYS0000004672 1714: 1713: 1701: 1700: 1688: 1687: 1675: 1674: 1662: 1661: 1649: 1648: 1636: 1635: 1623: 1622: 1610: 1609: 1597: 1596: 1587: 1586: 1574: 1573: 1561: 1560: 1548: 1547: 1535: 1534: 1525: 1524: 1523: 1510: 1509: 1508: 1478: 1472: 1471: 1469: 1467: 1458:. Archived from 1448: 1442: 1441: 1417: 1411: 1410: 1408: 1406: 1400: 1391: 1385: 1384: 1382: 1380: 1374: 1366: 1360: 1359: 1357: 1355: 1340: 1334: 1333: 1328:. Archived from 1322: 1316: 1315: 1271: 1265: 1264: 1262: 1256:. Archived from 1231: 1218: 1212: 1211: 1200:Washington, D.C. 1177: 1168: 1160: 1154: 1153: 1121: 1074: 1059: 1046: 1031: 1020: 1019: 1017: 1015: 1009: 1003:. Archived from 998: 988: 982: 981: 979: 977: 954: 948: 947: 945: 943: 938: 908: 850:Southeast Alaska 826:invasive species 628:British Columbia 598:, where it is a 558: 546: 534: 522: 501: 500: 496: 493: 485: in) long. 484: 483: 479: 474: 473: 469: 464: 463: 459: 454: 453: 449: 440: 439: 435: 430: 429: 425: 420: 419: 415: 410: 409: 405: 400: 399: 395: 390: 389: 385: 380: 379: 375: 372: 366: 365: 361: 344: 343: 339: 334: 333: 329: 324: 323: 319: 314: 313: 309: 302: in) long. 301: 300: 296: 290:mountain hemlock 229: 208: 89: 88: 68: 63: 62: 44: 35:Western hemlock 32: 21: 2109: 2108: 2104: 2103: 2102: 2100: 2099: 2098: 2039: 2038: 2037: 2032: 2024: 2022: 2014: 2009: 2001: 1996: 1988: 1983: 1975: 1970: 1962: 1957: 1949: 1944: 1936: 1931: 1923: 1918: 1909: 1908: 1903: 1890: 1882: 1877: 1869: 1867: 1859: 1854: 1846: 1841: 1833: 1828: 1820: 1815: 1807: 1802: 1794: 1792: 1784: 1779: 1771: 1768:Observation.org 1766: 1758: 1753: 1745: 1743: 1735: 1730: 1722: 1717: 1709: 1704: 1696: 1691: 1683: 1678: 1670: 1665: 1657: 1652: 1644: 1639: 1631: 1626: 1618: 1613: 1605: 1600: 1592: 1590: 1582: 1577: 1569: 1564: 1556: 1551: 1543: 1538: 1530: 1528: 1519: 1518: 1513: 1504: 1503: 1498: 1485: 1475: 1465: 1463: 1452:"State Symbols" 1450: 1449: 1445: 1438: 1419: 1418: 1414: 1404: 1402: 1398: 1393: 1392: 1388: 1378: 1376: 1372: 1368: 1367: 1363: 1353: 1351: 1342: 1341: 1337: 1324: 1323: 1319: 1296:10.2307/3762170 1273: 1272: 1268: 1260: 1240:(12): 1433–40. 1229: 1220: 1219: 1215: 1198:. 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Retrieved 926: 920: 914: 906: 890: 878: 866: 854:tuberculosis 839: 828:, but as an 819: 800: 793: 785: 750: 734: 722: 716: 702: 696: 690: 687:edible fungi 680: 675: 656:Sitka spruce 641: 596:Coast Ranges 587: 586: 487: 304: 276: 250: 246: 241: 240: 239: 205: 203: 187: 186: 174: 124:Gymnospermae 117: 104: 29: 1809:kew-2516641 1706:NatureServe 1641:iNaturalist 1515:Wikispecies 1466:20 February 1379:27 December 976:12 December 942:19 November 846:the natives 840:The edible 822:naturalised 747:Cultivation 660:Douglas-fir 648:Pacific yew 273:Description 2043:Categories 1804:Plant List 1529:Calflora: 1150:1141235469 1014:17 October 958:USDA, NRCS 899:References 893:state tree 862:hemorrhage 616:Washington 581:nurse logs 508:California 130:Division: 1911:Q17359455 1607:233501322 1405:1 October 1284:Mycologia 881:vitamin C 773:temperate 668:wildfires 279:evergreen 182:Species: 144:Pinopsida 134:Pinophyta 94:Kingdom: 2023:VASCAN: 2016:24900456 2011:Tropicos 1977:11059336 1964:261541-1 1905:Wikidata 1868:VASCAN: 1861:24900238 1856:Tropicos 1711:2.140839 1672:10921579 1659:264010-1 1506:Q1144409 1500:Wikidata 1312:21148873 1254:17123812 1206:(USFS), 1191:Conifers 1068:Archived 960:(n.d.). 807:softwood 796:forestry 790:Forestry 765:nitrogen 579:such as 347:serrated 164:Pinaceae 160:Family: 71:IUCN 3.1 1938:2685350 1786:1095217 1620:2687210 1558:1033656 1354:5 March 1304:3762170 887:Culture 869:herring 842:cambium 820:It has 757:gardens 638:Ecology 497:⁄ 480:⁄ 470:⁄ 460:⁄ 450:⁄ 436:⁄ 426:⁄ 416:⁄ 406:⁄ 396:⁄ 386:⁄ 376:⁄ 362:⁄ 351:stomata 340:⁄ 330:⁄ 320:⁄ 310:⁄ 297:⁄ 286:hemlock 282:conifer 255:hemlock 170:Genus: 154:Pinales 150:Order: 140:Class: 98:Plantae 69: ( 1990:183401 1817:PLANTS 1744:NZOR: 1685:183400 1594:tsuhet 1591:FEIS: 1584:150568 1434:  1310:  1302:  1252:  1148:  1138:  1041:  860:, and 809:) and 737:tannin 711:, and 701:, and 664:storms 604:timber 265:. The 245:, the 2059:Tsuga 2026:22102 1972:IRMNG 1848:18473 1793:PPE: 1755:NZPCN 1698:42435 1667:IRMNG 1646:48254 1633:40705 1579:EUNIS 1571:TSUHE 1545:59HMG 1399:(PDF) 1373:(PDF) 1350:. 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Index

Western hemlock

Conservation status
Least Concern
IUCN 3.1
Scientific classification
Edit this classification
Plantae
Tracheophytes
Gymnospermae
Pinophyta
Pinopsida
Pinales
Pinaceae
Tsuga
Binomial name
Raf.
Sarg.

hemlock
Kenai Peninsula
Sonoma County, California
Latin
evergreen
conifer
hemlock
mountain hemlock
serrated
stomata
cones

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