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Quercus phellos L.
WILLOW OAK
Life   Plantae   Dicotyledoneae   Fagaceae   Quercus

Quercus phellos
© Copyright Bobby Hattaway 2011 · 5
Quercus phellos

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Quercus phellos
© Copyright Bobby Hattaway 2011 · 5
Quercus phellos
Quercus phellos
© Copyright Bobby Hattaway 2011 · 5
Quercus phellos

Quercus phellos
© Copyright Bobby Hattaway 2011 · 5
Quercus phellos
Quercus phellos
© Copyright Bobby Hattaway 2011 · 5
Quercus phellos

Quercus phellos
© Copyright Bobby Hattaway 2011 · 5
Quercus phellos
Quercus phellos
© Copyright Bobby Hattaway 2011 · 5
Quercus phellos

Quercus phellos, inflorescence - whole - male
© Copyright Steve Baskauf, 2002-2011 · 4
Quercus phellos, inflorescence - whole - male
Quercus phellos, inflorescence - whole - male
© Copyright Steve Baskauf, 2002-2011 · 4
Quercus phellos, inflorescence - whole - male

Quercus phellos, inflorescence - whole - male
© Copyright Steve Baskauf, 2002-2011 · 4
Quercus phellos, inflorescence - whole - male
Quercus phellos, twig - orientation of petioles
© Copyright Steve Baskauf, 2002-2011 · 4
Quercus phellos, twig - orientation of petioles

Quercus phellos, bark - of a large tree
© Copyright Steve Baskauf, 2002-2011 · 4
Quercus phellos, bark - of a large tree
Quercus phellos, leaf - showing orientation on twig
© Copyright Steve Baskauf, 2002-2011 · 4
Quercus phellos, leaf - showing orientation on twig

Quercus phellos, leaf - showing orientation on twig
© Copyright Steve Baskauf, 2002-2011 · 4
Quercus phellos, leaf - showing orientation on twig
Quercus phellos, leaf - whole upper surface
© Copyright Steve Baskauf, 2002-2011 · 4
Quercus phellos, leaf - whole upper surface

Associates · map
FamilyScientific name @ source (records)
Aphididae  Stegophylla quercicola @ NCSU (33)

Stegophylla quercina @ NCSU (2)
Botryosphaeriaceae  Botryosphaeria corticola @ BPI (1)
Candelariaceae  Candelaria concolor @ I_GBP (2)

Candelariella xanthostigmoides @ I_GBP (1)
Cicadellidae  Alebra aurea @ MEMU_ENT (2)

Empoasca fabae @ III (1)

Eratoneura acantha @ III (15)

Eratoneura adunca @ III (4)

Eratoneura affinis @ III (9)

Eratoneura arta @ III (1)

Eratoneura basilaris @ III (2)

Eratoneura brevipes @ III (3)

Eratoneura campora @ III (4)

Eratoneura carmini @ III (5)

Eratoneura comoides @ III (15)

Eratoneura contracta @ III (2)

Eratoneura delongi @ III (2)

Eratoneura ellisi @ III (40)

Eratoneura emquu @ III (3)

Eratoneura firma @ III (3)

Eratoneura gemina @ III (46)

Eratoneura gilesi @ III (5)

Eratoneura immota @ NCSU (1); AMNH_IZC (1); III (28)

Eratoneura impar @ III (1)

Eratoneura inepta @ III (1)

Eratoneura knullae @ III (3)

Eratoneura lenta @ III (30)

Eratoneura longa @ III (6)

Eratoneura lunata @ III (1)

Eratoneura maga @ III (2)

Eratoneura manus @ III (1)

Eratoneura millsi @ III (3)

Eratoneura misera @ III (1)

Eratoneura parva @ III (2)

Eratoneura patris @ III (3)

Eratoneura phellos @ III (23); NCSU (1); AMNH_IZC (1)

Eratoneura prolixa @ III (1)

Eratoneura propria @ III (1)

Eratoneura restricta @ III (1)

Eratoneura richardsi @ III (1)

Eratoneura spinifera @ III (1)

Eratoneura stephensoni @ III (3)

Eratoneura tantilla @ III (3)

Eratoneura usitata @ III (1)

Erythridula herberti @ III (1)

Erythridula jocosa @ III (1)

Erythridula minuta @ III (1)

Erythridula nigriphylla @ III (1)

Erythridula obliqua @ III (1)

Erythridula parvispicata @ III (10)

Erythridula spatulata @ III (1)

Erythridula volucris @ III (11)

Erythroneura maculata @ MEMU_ENT (1)

Scaphytopius ( @ MEMU_ENT (1)
Cicadidae  Tibicen resh @ AMNH_IZC (1)
Cronartiaceae  Cronartium cerebrum @ BPI (27)

Cronartium fusiforme @ BPI (25)

Cronartium quercuum @ BPI (1)
Cryphonectriaceae  Endothia gyrosa @ BPI (7)

Endothia radicalis @ BPI (1)

Endothia @ BPI (2); 613921A (1); 613921B (1)
Delphacidae  Delphacodes lutulenta @ UDCC_TCN (2)
Derbidae  Cedusa @ MEMU_ENT (3)

Otiocerus abbotii @ MEMU_ENT (1)
Dermateaceae  Marssonina quercina @ BPI (1)

Marssonina @ BPI (1)

Mollisia prinicola @ BPI (1)
Diaporthaceae  Phomopsis @ BPI (2)
Diaspididae  Abgrallaspis colorata @ MEMU_ENT (2)

Aspidiotus @ MEMU_ENT (2)

Diaspidiotus osborni @ MEMU_ENT (4)

Melanaspis obscura @ CSCA_TCN (3); MEMU_ENT (5)
Diatrypaceae  Diatrype stigma @ BPI (1)
Erysiphaceae  Microsphaera alni @ BPI (4)
Flatidae  Ormenis chloris @ MEMU_ENT (1)

Ormenis pruinosa @ MEMU_ENT (1)
Fomitopsidaceae  Daedalea confragosa @ BPI (1)
Ganodermataceae  Ganoderma curtisii @ BPI (1)

Ganoderma sessile @ BPI (1)
Gnomoniaceae  Gnomonia setacea @ BPI (1)
Helotiaceae  Godroniopsis quernea @ BPI (3)
Hyaloscyphaceae  Dasyscyphus @ BPI (2)
Kermesidae  Kermes @ MEMU_ENT (5)
Lygaeidae  Oncopeltus fasciatus @ AMNH_IZC (1)
Membracidae  Archasia belfragei @ UDCC_TCN (1)

Cyrtolobus arcuatus @ NCSU (5); UDCC_TCN (2)

Cyrtolobus clarus @ NCSU (30); UDCC_TCN (27); AMNH_ENT (2)

Cyrtolobus discoidalis @ AMNH_ENT (2); UDCC_TCN (8)

Cyrtolobus dixianus @ AMNH_ENT (6)

Cyrtolobus fenestratus @ AMNH_ENT (2); NCSU (50); UDCC_TCN (23)

Cyrtolobus flavolatus @ AMNH_ENT (1)

Cyrtolobus fuliginosus @ UDCC_TCN (1); NCSU (3)

Cyrtolobus funkhouseri @ NCSU (1)

Cyrtolobus maculifrontis @ UDCC_TCN (3)

Cyrtolobus ovatus @ AMNH_ENT (4); NCSU (5); UDCC_TCN (2)

Cyrtolobus pallidifrontis @ AMNH_ENT (1)

Cyrtolobus rufulus @ UDCC_TCN (5); AMNH_ENT (1)

Cyrtolobus togatus @ UDCC_TCN (84); NCSU (108); AMNH_ENT (29)

Glossonotus acuminatus @ UDCC_TCN (3); AMNH_ENT (1)

Hadrophallus bubalus @ AMNH_ENT (1)

Microcentrus perditus @ NCSU (2)

Micrutalis calva @ NCSU (1)

Ophiderma definita @ AMNH_ENT (3); UDCC_TCN (90); NCSU (128)

Ophiderma evelyna @ AMNH_ENT (1); UDCC_TCN (1); NCSU (19)

Ophiderma flavicephala @ NCSU (327); UDCC_TCN (318); AMNH_ENT (23)

Ophiderma pubescens @ NCSU (1); UDCC_TCN (1)

Ophiderma salamandra @ NCSU (9)

Platycotis vittata @ AMNH_ENT (6); UDCC_TCN (6); NCSU (77)

Smilia camelus @ AMNH_ENT (9); NCSU (7); UDCC_TCN (5)

Smilia fasciata @ NCSU (165); UDCC_TCN (67)

Smilia @ AMNH_ENT (1)

Stictocephala brevitylus @ UDCC_TCN (5)

Stictocephala lutea @ UDCC_TCN (1)

Stictocephala stimulea @ NCSU (3); UDCC_TCN (1)

Telamona extrema @ NCSU (1); UDCC_TCN (1)

Telamona monticola @ NCSU (1)

Telamona unicolor @ UDCC_TCN (1)

Xantholobus intermedius @ UDCC_TCN (1)
Meruliaceae  Merulius tremellosus @ BPI (1)
Miridae  Atractotomus miniatus @ NCSU_ENT (8)

Ceratocapsus rubricornis @ AMNH_PBI (1)

Deraeocoris quercicola @ NCSU (1)

Neolygus omnivagus @ NCSU_ENT (4)

Neolygus semivittatus @ NCSU_ENT (30)

Phytocoris neglectus @ NCSU_ENT (1)

Plagiognathus guttulosus @ NCSU_ENT (10)

Pseudoxenetus regalis @ NCSU_ENT (18)
Mycoporaceae  Mycoporum acervatum @ I_GBP (2)
Peniophoraceae  Peniophora sambuci @ BPI (1)
Pentatomidae  Acrosternum hilare @ AMNH_IZC (1)

Euthyrhynchus floridanus @ NCSU (1)
Physciaceae  Physcia millegrana @ I_GBP (3)

Pyxine subcinerea @ I_GBP (2)
Polyporaceae  Fomes calkinsii @ BPI (1)

Fomes everhartii @ BPI (3)

Fomes robustus @ BPI (1)

Lenzites betulina @ BPI (1)

Polyporus biennis @ BPI (1)

Polyporus fissilis @ BPI (2)

Polyporus gilvus @ BPI (5)

Polyporus hirsutus @ BPI (1)

Polyporus hispidus @ BPI (2)

Polyporus pargamenus @ BPI (3)

Polyporus sector @ BPI (1)

Polyporus semipileatus @ BPI (1)

Polyporus versicolor @ BPI (1)

Trametes hydnoides @ BPI (1)
Septobasidiaceae  Septobasidium alni @ BPI (1)

Septobasidium mariani @ BPI (3)

Septobasidium sinuosum @ BPI (1)
Steccherinaceae  Irpex cinnamomeus @ BPI (1)

Irpex mollis @ BPI (1)
Stereaceae  Stereum fasciatum @ BPI (1)

Stereum frustulatum @ BPI (1)

Stereum lobatum @ BPI (2)

Stereum @ BPI (1)
Taphrinaceae  Taphrina caerulescens @ BPI (9)
Ulvaceae  Solenia poriaeformis @ BPI (1)
Xylariaceae  Hypoxylon punctulatum @ BPI (1)

Hypoxylon rubiginosum @ BPI (1)
_  Actinopelte dryina @ BPI (2)

Endothiella gyrosa @ BPI (3)

Microcera aurantiicola @ BPI (1)

Microcera coccophila @ BPI (1)

Valsaria exasperans @ BPI (1)

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Following modified from US Forest Service
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Following modified from Flora of North America
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14. Quercus phellos Linnaeus, Sp. Pl. 2: 994. 1753.

Willow oak

Trees , deciduous, to 30 m. Bark dark gray and smooth, becoming darker and irregularly fissured with age, inner bark light orange. Twigs reddish brown, 1-2 mm diam., glabrous. Terminal buds chestnut brown, ovoid, 2-4 mm, apex acute, glabrous. Leaves: petiole 2-4(-6) mm, glabrous, rarely sparsely hairy. Leaf blade linear to narrowly elliptic, usually widest near middle, 50-120 × 10-25 mm, base acute, margins entire with 1 apical awn, apex acute; surfaces abaxially pale green, glabrous, rarely softly pubescent, adaxially light green, glabrous. Acorns biennial; cup shallowly saucer-shaped, 3-6.5 mm high × 7.5-11 mm wide, covering 1/4-1/3 nut, outer surface puberulent, inner surface light brown, pubescent, scale tips tightly appressed, acute; nut ovoid to hemispheric, 8-12 × 6.5-10 mm, often striate, glabrate, scar diam. 4.5-6 mm.

Flowering spring. Of bottomland flood plains, also on stream banks, dunes, and terraces, and, occasionally, on poorly drained uplands; 0-400 m; Ala., Ark., Del., D.C., Fla., Ga., Ill., Ky., La., Md., Miss., Mo., N.J., N.Y., N.C., Okla., Pa., S.C., Tenn., Tex., Va.

Individual trees with leaves softly pubescent abaxially may be classified as Quercus phellos forma intonsa Fernald; however, such leaves are known to occur on second-flush shoots from twigs bearing typical leaves.

Quercus phellos reportedly hybridizes with Q . coccinea (W. W. Ashe 1894); with Q . ilicifolia (= Q . × giffordi Trelease) and Q . incana (E. J. Palmer 1948); and with Q . marilandica , Q . nigra , Q . pagoda (= Q . × ludoviciana Sargent), Q . palustris , Q . rubra , Q . shumardii , and Q . velutina . D. M. Hunt (1989) cited evidence of hybridization also with Q . hemisphaerica , Q . imbricaria , Q . laurifolia , and Q . pumila .

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Quercus+phellos&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=Quercus+phellos&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
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Updated: 2018-01-22 20:58:07 gmt
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