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Tsuga mertensiana (Bong. ) Carrière
MOUNTAIN HEMLOCK
Life   Plantae   Gymnospermae   Pinaceae   Tsuga

Tsuga mertensiana, whole tree - general
© Copyright Steve Baskauf, 2002-2011 · 4
Tsuga mertensiana, whole tree - general

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Tsuga mertensiana, leaf - showing orientation on twig
© Copyright Steve Baskauf, 2002-2011 · 4
Tsuga mertensiana, leaf - showing orientation on twig
Tsuga mertensiana, twig - showing attachment of needles
© Copyright Steve Baskauf, 2002-2011 · 4
Tsuga mertensiana, twig - showing attachment of needles

Tsuga mertensiana, leaf - entire needle
© Copyright Steve Baskauf, 2002-2011 · 4
Tsuga mertensiana, leaf - entire needle
Tsuga mertensiana, leaf - entire needle
© Copyright Steve Baskauf, 2002-2011 · 4
Tsuga mertensiana, leaf - entire needle

Tsuga mertensiana, leaf - entire needle
© Copyright Steve Baskauf, 2002-2011 · 4
Tsuga mertensiana, leaf - entire needle
Tsuga mertensiana, twig - showing attachment of needles
© Copyright Steve Baskauf, 2002-2011 · 4
Tsuga mertensiana, twig - showing attachment of needles

Tsuga mertensiana, bark - of a large tree
© Copyright Steve Baskauf, 2002-2011 · 4
Tsuga mertensiana, bark - of a large tree

Associates · map
FamilyScientific name @ source (records)
Aphididae  Cinara ( @ AMNH_PBI (3)
Atheliaceae  Athelia galzinii @ BPI (2)

Athelia munda @ BPI (1)
Boletaceae  Boletus granulatus @ BPI (1)
Boreostereaceae  Columnocystis abietina @ BPI (1)
Coniophoraceae  Serpula himantioides @ BPI (1)
Corticiaceae  Amylobasidium tsugae @ BPI (1)
Dacrymycetaceae  Dacrymyces deliquescens @ BPI (1)

Guepiniopsis alpina @ BPI (1)
Discinaceae  Hydnotrya variiformis @ BPI (2)
Echinodontiaceae  Echinodontium tinctorium @ BPI (3)

Laurilia sulcata @ BPI (1)
Elaphomycetaceae  Elaphomyces granulatus @ BPI (1)
Ganodermataceae  Ganoderma lucidum @ BPI (1)

Ganoderma oregonense @ BPI (1)
Hyaloscyphaceae  Dasyscyphus arida @ BPI (4)

Dasyscyphus serinellus @ BPI (3)

Lachnellula chrysophthalma @ BPI (7)

Lachnellula @ BPI (1)
Hygrophoraceae  Hygrophorus goetzii @ BPI (1)
Hymenochaetaceae  Hymenochaete fimbriata @ BPI (1)

Phellinus nigrolimitatus @ BPI (1)
Lophiostomataceae  Herpotrichia nigra @ BPI (14)
Melampsoraceae  Melampsora abieti-capraearum @ BPI (1)
Meruliaceae  Phlebia albida @ BPI (1)
Miridae  Deraeocoris piceicola @ AMNH_ENT (2)

Dichaetocoris piceicola @ AMNH_PBI (3); AMNH_ENT (19)

Lepidargyrus ancorifer @ AMNH_PBI (2)

Phytocoris neglectus @ AMNH_PBI (7)

Pinalitus approximatus @ AMNH_ENT (24)

Pinalitus rubrotinctus @ AMNH_ENT (1)
Peniophoraceae  Peniophora chaetophora @ BPI (1)
Polyporaceae  Cryptoporus volvatus @ BPI (1)

Fomes applanatus @ BPI (1)

Fomes nigrolimitatus @ BPI (3)

Fomes officinalis @ BPI (1)

Fomes pini @ BPI (4)

Fomes pinicola @ BPI (3)

Fomes robustus @ BPI (1)

Lentinus lepideus @ BPI (1)

Polyporus abietinus @ BPI (3)

Polyporus alboluteus @ BPI (1)

Polyporus benzoinus @ BPI (1)

Polyporus dryadeus @ BPI (1)

Polyporus fragilis @ BPI (1)

Polyporus leucospongia @ BPI (6)

Polyporus resinosus @ BPI (1)

Poria cinerascens @ BPI (1)

Poria ferrea @ BPI (1)

Poria tsugina @ BPI (3)

Poria vaporaria @ BPI (1)
Reduviidae  Rasahus @ AMNH_PBI (2)
Rhizopogonaceae  Rhizopogon vulgaris @ BPI (1)
Rhytismataceae  Coccomyces mertensianae @ BPI (1)
Sistotremataceae  Trechispora farinacea @ BPI (1)
Stereaceae  Aleurodiscus abietis @ BPI (1)

Stereum abietinum @ BPI (2)

Stereum chailletii @ BPI (1)

Stereum rugisporum @ BPI (3)

Stereum sanguinolentum @ BPI (4)

Stereum sulcatum @ BPI (7)
Strophariaceae  Pholiota @ BPI (5)
Tubulicrinaceae  Tubulicrinis chaetophora @ BPI (1)
Xylariaceae  Hypoxylon diathrauston @ BPI (3)
_  Caeoma dubium @ BPI (1)

Clithris crispa @ BPI (1)

Grandinia @ BPI (1)

Sirococcus tsugae @ BPI (2)

Spongiporus leucospongia @ BPI (1)

Uraecium holwayi @ BPI (1)

Uredo holwayi @ BPI (1)

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Following modified from The Gymnosperm Database
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Following modified from US Forest Service
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Following modified from Plants Database, United States Department of Agriculture
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Following modified from Flora of North America
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Link to Flora of North America home
 
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2. Tsuga mertensiana (Bongard) Carrière, Traité Gén. Conif., ed. 2. 250. 1867.

Mountain hemlock, pruche de Patton

Pinus mertensiana Bongard, Mém. Acad. Imp. Sci. St. Pétersbourg, Sér. 6., Sci. Math. 2: 163. 1832; Abies hookeriana A.Murray bis; A . pattoniana A.Murray bis; Hesperopeuce mertensiana (Bongard) Rydberg; H . pattoniana (A.Murray bis) Lemmon; Picea ( Tsuga ) hookeriana (A.Murray bis) Bertrand; Pinus hookeriana (A.Murray bis) McNab; Pinus pattoniana (A.Murray bis) Parlatore; Tsuga crassifolia Flous; T . hookeriana (A.Murray bis) Carrière; T . pattoniana var. hookeriana (A.Murray bis) Lemmon; ´ Tsuga - Picea hookeriana (A.Murray bis) M.Van Campo-Duplan and Gaussen.

Trees to 40m; trunk to 1.5m diam.; crown conic. Bark charcoal gray to reddish brown, scaly and deeply fissured. Twigs yellow-brown, glabrous to densely pubescent. Buds oblong, 3--4mm. Leaves 10--25(--30)mm, mostly spreading in all directions from twigs, curved toward twig apex, thickened centrally along midline, somewhat rounded or 4-angled in cross section, both surfaces glaucous, with ±inconspicuous stomatal bands; margins entire. Seed cones oblong-cylindric, 3--6 ´ 1.5--3cm; scales broadly fan-shaped, 8--l5 ´ 8--15mm, apex rounded to pointed. 2 n =24.

Coastal and montane forests to alpine slopes (where it occurs in krummholz form); 0--2400m; B.C.; Alaska, Calif., Idaho, Mont., Nev., Oreg., Wash.

The wood of Tsuga mertensiana is somewhat inferior to that of western hemlock both for building purposes and as pulp. This is a very handsome tree with its branches densely clothed with pale, spreading leaves and is adaptable to a wide variety of climatic conditions.

M.Van Campo-Duplan and H.Gaussen (1948) postulated that this taxon originated by hybridization between Picea and Tsuga . Although this is unlikely, some characteristics such as leaf arrangement and shape, phenolic chemistry, and pollen grain structure lend some support for this hypothesis.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Tsuga+mertensiana&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Tsuga+mertensiana&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
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Updated: 2018-01-18 12:39:36 gmt
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