Search for featured oaks. Acorns and leaves not drawn in same scale.

Tuesday

Quercus macrocarpa



Name: 
 Quercus macrocarpa Michx. (1801)

Synonyms: 
Quercus macrocarpa 'Pannosa' H. Jäger (1889)
Quercus macrocarpa var. oliviformis (F.Michx.) A.Gray 1856
Quercus macrocarpa subsp oliviformis (F.Michx.) A.Camus 1935
Quercus macrophylla hort. not Née
Quercus oliviformis F.Michx. 1811
Quercus ramosa Booth


Local Names: 

Range/Natural Distribution:
CANADA: (Manitoba, New Brunswick, Ontario, Quebeck, Saskatchewan), USA: (Alabama, Arkansas, Connecticut, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Michigan, Minnesota, Missouri, Montana, Nebraska, New York, North Dakota, Ohio, Oklahoma, Pennsylvania, South Dakota, Tennessee, Texas, Vermont, Virginia, Wisconsin, Wyoming)

References: 
Oak ICRA Checklist
Oaks of the World
USDA Profile

Monday

Quercus acutissima



Name: 
Quercus acutissima Carruth. (1862)

Synonyms: 
Quercus acutissima var. depressinucata H. Wei Jen & R.Q.Gao 1984
Quercus acutissima var. septentrionalis Liou 1936
Quercus acutissima var. lioui Kozlov 1933
Quercus bombyx K.Koch 1873
Quercus castaneifolia Morrison
Quercus lunglingensis Hu 1951
Quercus serrata S. & Z. 1846 not Thunb. nor Carruthers
Quercus uchiyamana Nakai 1914

Local Names: 
ma li

Range: 
HIMALAYA: INDIA: (Arunachal Pradesh, Sikkim), NEPAL, BHUTAN, FAR EAST ASIA: CHINA: (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hebei, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Liaoning, Shaanxi, Shandong, Shanxi, Sichuan, SE Xizang, Yunnan, Zhejiang), KOREA, JAPAN: (Honshu, Shikoku, Kyushu), SOUTH EAST ASIA: N MYANMAR, LAOS

References: 
Oak ICRA Checklist
Oaks of the World
Flora of China
Illustration

Thursday

Quercus lyrata



Name: 
Quercus lyrata Walter (1788)

Synonyms: 
Quercus bicolor var. lyrata (Walt.) Dippel 1891

Local Names: 
Overcup Oak
Swamp Post Oak
Swamp White Oak
Water White Oak
White Oak

Range: 
USA: (Alabama, Arkansas, Delaware, Florida, Georgia (US), Illinois, Indiana, Kentucky, Louisiana, Maryland, Minnesota, Missouri, New Jersey, North Carolina, Oaklahoma, South Carolina, Tennessee, Texas, Virginia)

References: 
Oak ICRA Checklist
Oaks of the World

Wednesday

Quercus coccifera





Name: 
Quercus coccifera L. (1753) 

Synonyms: 
Quercus angustifolia (Laguna) Gonzalez-Albo 1936, not Sessé & Moç. 1894
Quercus arcuata Kotschy ex A.DC 1864
Quercus aucheri auctores, not Jaub. & Spach
Quercus brachybalanos Kotschy 1864
Quercus coccifera Tchich. 1860
Quercus coccifera subsp pseudococcifera (Desf.) Arcangeli 1882
Quercus inops Kotschy 1853
Quercus kermesiana hort.
Quercus kryptocarpa Svent. & Marcet
Quercus mesto Boiss.1842
Quercus pseudococcifera Desf.1799

Local Names: 
Grain Oak
Kermes Oak

Range/Natural Distribution:
NORTH AFRICA: N Algeria , Libya, Morocco, Tunisia, EUROPE: Albania, Balearic Isles, Bosnia & Herzegovena, Bulgaria, France, Greece: (+Aegean Isles including Chios, Crete, Icaria, Karpathos, Rhodes), Italy, Macedonia, Portugal, Sardegna, Serbia, Sicilia, Spain, WEST ASIA: Cyprus, Israel, Jordan, Lebanon, Syria, Turkey: (European & W & S Anatolia)

References: 
Oak ICRA Checklist
Oaks of the World
Image

Tuesday

Quercus suber



Name: 
 Quercus suber L. (1753)

Synonyms: 
Quercus bivonana Guss. 1844
Quercus occidentalis J.Gay 1856
Quercus suber var. occidentalis (J.Gay) Laguna 1883
Quercus suber subsp occidentalis (J.Gay) A.Camus 1938
Quercus subera St-Lag. 1880
Quercus suber var. crinita Pers. 1807

Local Names: 
Cork Oak

Range: 
NORTH AFRICA: N Algeria, Morocco, Tunisia, EUROPE: Corsica, France, SE Italy, Portugal, Sardegna, Sicilia, Spain

References: 
Oak ICRA Checklist
Oaks of the World
Quercus suber tree image from UBC Botanical Garden

Monday

Quercus kelloggii



Name: 
 Quercus kelloggii Newb. (1857)

Synonyms: 
Quercus californica (Torr.) Cooper 1858
Quercus sonomensis Benth. ex A.DC 1864
Quercus tinctoria W. Bartram var. californica Torr. 1857


Local Names: 
California black oak

Range: 
USA: (California, SW Oregon)

References: 
Oak ICRA Checklist
Oaks of the World
U.S. Forestry Service

Thursday

Quercus litseoides



Name: 
Quercus litseoides Dunn (1909)

Synonyms: 
Cyclobalanopsis litseoides (Dunn) Schottky 1912

Local Names: 
mu jiang ye quig gang

Range: 
FAR EAST ASIA: CHINA: (SE Guangdong, SW Guangxi)

References: 
Oak ICRA Checklist
Oaks of the World
Oaks of China
Illustration

Wednesday

Quercus sessilifolia



Name:
Quercus sessilifolia Blume 1850

Synonyms: 
Cyclobalanopsis sessilifolia (Bl.) Schottky 1912
Cyclobalanopsis nubium (Hand.-Mazz.) Chun ex Zheng 1982
Cyclobalanopsis paucidentata (Franch. ex Nak.) Kudo & Masamune 1930
Quercus paucidentata Franch. ex Nakai (1926)
Quercus nubium Hand.-Mazz. (1922)
Quercus chingii F. P. Metcalf (1931)

Local Names: 
yun shan qing gang
Tsukubane-gashi

Range: 
FAR EAST ASIA: CHINA: (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Taiwan, Zhejiang), JAPAN: (Honshu, Shikoku, Kyushu)

References: 
Oak ICRA Checklist
Oaks of the World
Oaks of China
Illustration

Tuesday

Quercus petraea



Name: 
Quercus petraea (Matt.)Liebl. 1784

Synonyms:
petioleata Schur 1857
petraea var. laciniata (Lam.) C.Vicioso 1950
regalis Burnett ex Endl. 1848
robur var. laciniata Lam. 1785
robur var. platyphylla Lam. 1785
robur
sessilis Ehrh. ex Shur 1857
sphaerocarpa Vuk. in Schlosser 1876
sublobata Kitoibel 1814

Local Names: 
Sessile Oak
Durmast Oak



Range: 
EUROPE: S ALBANIA, AUSTRIA, BELGIUM, BOSNIA & HERZEGOVENIA, BRITAIN, BULGARIA, CORSICA, CROATIA, CZECH REPUBLIC, DENMARK, ESTONIA, FRANCE, GERMANY, HUNGARY, IRELAND, ITALY, LATVIA, LITHUANIA, MACEDONIA, MOLDOVA, MONTENEGRO, THE NETHERLANDS, NORWAY, POLAND, ROMANIA, RUSSIA, SERBIA, SICILIA, SLOVENIA, SLOVAKIA, C SPAIN, SWEDEN, SWITZERLAND, WEST ASIA: ARMENIA, AZERBAIJAN, GEORGIA (Asia), N IRAN, LEBANON, SYRIA, TURKEY: (European & NW Anatolia), UKRAINE

References: 
Oak ICRA Checklist
Oaks of the World

Monday

Quercus turbinella

 
Name:
Quercus turbinella Greene 1889


Synonyms: 
Quercus dumosa var. turbinella (Greene) Jepson 1895
Quercus dumosa subsp turbinella (Greene) E.Murray 1983
Quercus subturbinella Trel. 1924 (Camus = n° 182)

Local Names: 
shrub live oak
turbinella oak
Sonorian scrub oak
California scrub oak

Range: 
USA: (Arizona, California, Colorado, Nevada, New Mexico, Texas, Utah), MEXICO: (Baja California (Norte), Sonora, Chihuahua)


References: 
Oak ICRA Checklist
Oaks of the World
Image: Plant
Image: Acorn and leaves
Image: Catkins (Male flowers)

Friday

Quercus chevalieri



Name:   
Quercus chevalieri Hickel & A.Camus 1921

Synonyms:   
Cyclobalanopsis chevalieri (Hickel & A.Camus) Hsu & Wei Jen 1993
Cyclobalanopsis nigrinux Hu 1951

Local Names:   
hei guo qing gang

R ange:
China (Yunnan, Guangdong, Guangxi), Vietnam

References:    
Oak ICRA Full Name Report
eFloras - Oaks of China
Oaks of the World
Illustration 
Illustration








Thursday

Quercus austroglauca



Name:
Quercus austroglauca (Y.T.Chang)Y.T.Chang 1992

Synonyms:   
Cyclobalanopsis austroglauca Y.T.Chang 1979

Local Names:   
dian nan qing gang

Range:   
China (S.E. Yunnan) 

Conservation Status:
Rated as Endangered (EN) in the The Red List of Oaks

 References:
Oaks of the World
Oak ICRA Checklist Full Name Report
eFlora.org - Chinese Plant Names
Illustration


Wednesday

Quercus longinux



Name: 
Quercus longinux Hyata 1911

Synonyms:
Cyclobalanopsis longinux (Hayata) Schottky 1912
Cyclobalanopsis longinux var. kuoi Liao
Cyclobalanopsis longinux var. pseudomyrsinifolia (Hayata) Liao 1971
glauca var. longinux (Hayata) Menitsky 1977
kanehirai Nakai
longinux var. kuoi (Liao) C.F Shen 1984
longinux var. kanehirai (Nakai) Liao 1970
pseudomyrsinifolia Hayata 1911
taichuensis Hayata 1911

Local Names:   
chang guo qing gang

Range:   
Taiwan

References:    
Oak ICRA
eFloras
Oaks of the World
Illustration



Monday

Quercus jenseniana



Name: 
Quercus jenseniana  Hand.-Mazz. 1922

Synonyms:
Cyclobalanopsis jenseniana (Hand.-Mazz.) Cheng & Hong ex Q.F.Zheng 1982
Cyclobalanopsis pinbianensisY.C. Hsu & H.Wei Jen 1976
Quercus pinbianensis (Hsu & Wei Jen) Huang & Chang 1992
Lithocarpus jensenianus (Hand.-Mazz.) Chun & Metcalf 1942
Lithocarpus dunnii F.P.Metcalf 1931


Local Name:
da ye qing gang  

Range:
SW and Central China (Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Yunnan, Zhejiang)



Additional Information:
Oaks of the World
The Plant List
Oak ICRA Checklist

Saturday

Weekedn Oak Art: Blemished

Colored pigment ink on 9"x12" Bristol Board. 2008. Mauldin Tree Farm

In the autumn of 2008, I picked up leaves from the road, on my walk along a tree preserve in Mauldin, South Carolina. I gathered enough leaf samples to draw at least a dozen illustrations. What attracted me most to these leaves were the uneven fall discolorations, blemishes, rot and tears. I thought such imperfections looked so beautiful. I called them Perfectly Imperfect.  The scene on the left, was my Father-in-law's breakfast table which I converted to my temporary drawing desk. Not once did he ever complain. On a small cleared area of the table, he set his cereal bowl and ate his breakfast as we talked about family, his grandchildren, trees, chipmunks, birds and life in general, while I drew. The wooden bison seen on the table is one of the many hundreds of woodwork he has done throughout the years which includes furniture, spinning wheels, turned bowls, tools, hundreds of toys and wood carvings.

Friday

Quercus lamellosa


Name: 
Quercus lamellosa Sm in Reese 1814

Synonyms:
Cyclobalanopsis lamellosa (Sm.) Oerst. 1867
Cyclobalanopsis fengii Hu & Cheng 1951
Cyclobalanopsis nigrinervis Hu 1951
imbricata Buch- Ham. ex D.Don 1825
lamellata Roxb.1832
lamelloides (C.C. Huang) Y.T. Chang 1996
lamellosa var. nigrinervis (Hu) Zhou & Sun 1996
paucilamellosa A.DC 1864

Local names:
Buk oak; bao pian qing gang

Range:
India, Thailand, Bhutan, Myanmar, Nepal, Sikkim, China ((Yunnan, W Guangxi, Xizang)

Quercus lamellosa:

Thursday

Quercus chungii



Name:
Quercus chungii F.P.Metcalf 1931

Synonym: 
Cyclobalanopsis chungii (F.P.Metcalf) Y.C.Hsu & H.Wei Jen 1982

Local Name: 
fujian qing gang

Range: 
China (Fujian, Guangdong, Guangxi, Hunan, Jiangxi )

Growth Habit:  
up to 15 meters high

Descriptions of Acorn: 
Flora of China
Oaks of the World


References:
Oaks of The World  
ICRA
Drawing  
Flora of China  

Wednesday

Quercus phanera



Name: 
Quercus Phanera Chun 1947

Synonyms:
Cyclobalanopsis phanera (Chun) Hsu & Wei Jen 1979
basellata Chun & W.C.Ko 1958
insularis Chun & P.C.Tam 1965, nom. illeg. not Borzi 1911

Local Names: 
liang ye qing gang

Range: 
China (Guangxi, Hainan)

Description

Drawing

More Quercus phanera information: 

eFloras

IPNI


Additional information and links on the genus Quercus:
Plants List: Quercus
Oaks of The World 
Quercus images on Google
Oak images on Google
List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List Search: (Type Quercus)
eFlora - Quercus




Monday

Quercus stenophylloides



Name:   
Quercus stenophylloides Hyata 1914

Synonyms: 
Cyclobalanopsis stenophylloides (Hayata) Kudo & Masamune 1930
Cyclobalanopsis stenophylla (Bl.) Schottky var. stenophylloides (Hayata)Liao 1974
Quercus salicina var stenophylloides (Hayata) S.S.Ying 1988
Quercus stenophylla var. stenophylloides (Hayata) A.Camus 1938
Quercus salicina var. asiatica Shen in Shen & Liu 1984

Local Names: 
Tai wan zhai ye qing gang

Image:

Illustration:

Oak information:

Range: Central and North Taiwan

Additional information and links on the genus Quercus:
Plants List: Quercus
Oaks of The World 
Quercus images on Google
Oak images on Google

List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List Search: (Type Quercus)
eFlora - Quercus




Friday

Quercus kerrii



Name:   Quercus kerrii Craib

Synonyms:    Cyclobalanopsis kerrii (Craib) Hu 1940; dispar Chun & Tsiang 1947, nom. illeg.; vestita Rehd. & Wils. in Sarg. 1916 not Griff. 1848

Local Names:   mao ye qing gang

Growth Habit usually 7-8 m, but reaches 20 m

Acorn:    acorn globose flattened, 0.7-1.3 cm high, 2-2.8 cm in diameter; apex flat or depressed;  several on a 4 cm long peduncle; slightly raised basal scar, 1-2 cm wide; enclosed 1/4 to 1/2 by cup; cup flat, 0.5-1 cm de haut, 2-3.5 cm in diameter, with bracts in 7-11 pubescent, entire or denticulate concentric rings; stylopodium persistent, greyish pubescent; maturing in 1 year; (Oaks of The World)

Leaves:    10-24 x 3-8 cm; evergreen or nearly so; leathery; oblong-elliptic, lanceolate or oblong-lanceolate; margin apical 2/3 serrate;  apex slightly obtuse to shortly acuminate; base rounded or broadly cuneate; shiny green above, hairy beneath; midrib weakly raised underside; 10-14 veins pairs; tertiary veins evident abaxially; petiole tomentose 1-2 cm long; (Oaks of The World)

Range:    SW China; Thailand; Vietnam; Myanmar; Laos

References:    
eFlora
Oak ICRA Checklist
Illustration
The Plant List
Oaks of the World 
International Plant Name Index 
Point Map of Quercus kerrii
Culture Sheet

Additional information and links on the genus Quercus:

Plants List: Quercus
Oaks of The World 
Quercus images on Google
Oak images on Google
List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List Search Page
eFlora - Quercus 





Thursday

Quercus alentejana ??? publ. in prep.



Name:   Quercus alentejana is a newly discovered taxon from the South West Iberian Penninsula. The proposed name is in the process of being formally published.

Synonyms:   Not applicable

Local Names:   Not applicable

Acorn:   

Leaves:   

Range:  South Portugal

References:    
The Oaks of Chevithorn Barton
Oak ICRA Checklist
Leaf images
Acorn image





Additional information and links on the genus Quercus:
Plants List: Quercus
Oaks of The World 
Quercus images on Google
Oak images on Google
List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List Search: (Type Quercus)
eFlora - Quercus




Wednesday

Quercus muehlenbergii




Name:   
Quercus muehlenbergii Engelm. 1887

Synonyms:   
acuminata (Michx.) Sarg. 1895
alexanderi Britt.
1901
brayi Small 1901
castanea Muhl. 1801, nom. illeg., not Née
muehlenbergii var. brayi (Small) Fang 1918
prinoides var. acuminata (Michx.) Gleason 1952
prinoides var. alexanderi (Britt.) Steyerm. 1960
prinus Coulter
prinus L. var. acuminata Michx.1801
rubra var. muehlenbergii (Engelm.) Wenz. 1884


Local Names:   
Chinkapin oak
Chinquapin oak
Cellow chestnut oak
Chestnut oak
Rock chestnut oak
Rock oak
Yellow oak

Acorn:    acorn 1.2-2 cm long; sesille or nearly so; singly or paired; enclosed 1/2 by scaly cup; dark brown to black; maturing in 1 year; cotyledons distinct (3)

Leaves:    6-20 x 4-9 cm; oboval to oblanceolate; thick; apex acuminate; base cuneate; 8-13 shallow lobes each side, pointed but not spinny; shiny green, glabrescent above; whitish green, hairy beneath (scattered stellate hairs); broad midrib; petiole yellow, hairless,1-3 cm long (3)

Range:   Widely distributed throughout eastern and central North America, local and disjunct population in Texas, New Mexico and northeastern Mexico. 

States:
AL  AR  CT  DE  FL  GA  IL  IN  IA  KS KY  LA  MD  MA  MI  MN  MS  MO  NE  NJ 
NM  NY  NC  OH  OK  PA  RI  SC  TN  TX VT  VA  WV  WI  ON  MEXICO

References:    
(1) USDA Plant Database - Quercus muehlenbergii
(2) US Forestry Service - Quercus muehlenbergii
(3) Oaks of the World - Quercus muehlenbergii

Additional information and links on the genus Quercus:
Plants List: Quercus
Oaks of The World 
Quercus images on Google
Oak images on Google
List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List Search: (Type Quercus)
eFlora - Quercus



Monday

Quercus x rosacea



Name:   
Quercus x rosacea.

Synonyms:    Quercus petraea x robur
Quercus pedunculata var. rosacea (Bechst.) Bluff & Fingerh. 1825
Quercus x allardii Hy 1895
Quercus x bossebovii Hy 1895
Quercus x brevipes Heuffel 1850
Quercus x hybrida Bechstein 1816
Quercus x feketei Simonk. 1887
Quercus x intermedia Boenningh. in Reichenb. 1831
Quercus x jahnii Simonk. 1890
Quercus x secalliana C.Vicioso 1950
Quercus x sessiloïdes Léveillé 1917

Quercus × superlata Borbás 
Quercus × roborigermanica Lasch 

Local Names:   

Acorn:    acorn's peduncle is the same length as the petiole of the nearest leave, reaching 5 cm; convex scales cup; cup enclosing 1/3 of the nut;

Leaves:    variable in size and shape; both sides glabrous, but with some simples hairs on veins and axils; base narrower than in Q. petraea, sometimes auricled; lobes are more regular than in Q.petraea; petiole glabrous, 0.5-2.5 cm long;

Range:   Native hybrid over Europe


References:     
The Plant List - Quercus x rosacea
Oaks of the World
Oak ICRA Checklist - Quercus xrosacea

Additional information and links on the genus Quercus:
Plants List: Quercus
Oaks of The World 
Quercus images on Google
Oak images on Google
List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List Search: (Type Quercus)
eFlora - Quercus

Saturday

Friday

Quercus michauxii


Name: Quercus michauxii

Synonyms: Quercus bicolor var. michauxii, Quercus bicolor subsp michauxii, Quercus houstoniana, Quercus prinus, Quercus prinus var. michauxii

Local Names:   Swamp Chestnut Oak, Basket Oak, Cow Oak

Acorn: 2.5-3 cm long; ovoid; singly or paired; enclosed 1/2 by cup; cup sessile or nearly so, with free or slightly appressed scales; maturing in 1 year; cotyledons distinct 

Leaves:   10-23 x 5-12 cm; oblong; apex pointed, base cuneate; margin wavy with 9-14 pairs of teeth; shiny dark green above; grey green, tomentose beneath ; red at fall; petiole pubescent 5-20 mm long.

Range:   

References:  (1)  (2)  (3)  (4)



Additional information and links on the genus Quercus:
Plants List: Quercus
Oaks of The World 
Quercus images on Google
Oak images on Google
List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List: Quercus




Thursday

Cyclobalanopsis daimingshanensis



Name:     
Cyclobalanopsis daimingshanensis S. Lee in Y. C. Hsu & H. W. Jen, Acta Bot. Yunnan. 1: 147. 1979.
 

Synonyms:    Quercus daimingshanensis (S. Lee) C. C. Huang.

Local Names:    大明山青冈 da ming shan qing gang (2)

Acorn:    oblong 2 cm long, 1.3 cm wide; glabrous; enclosed 1/3 by cup; cup hemispherical velutinous outside, scales in 5-6 concentric rings with margins apical ones denticulate, others entire; scar 3-5 mm, flat; stylopodium persistent; matures first year; (1)

Leaves:    4-7 x 1.5-3 cm; elliptic; glabrous, whitish below, dark green above; base cuneate, apex shortly acuminate, margin denticulate near apex; 7-9 vein pairs inconspicuous above and slightly raised beneath; petiole 5-8 mm, glabrous; (1)

Range:    China (central Guangx, in Daming Shan). Habitat: Mixed mesophytic forests in mountains; circa 1000 m. C Guangxi (Daming Shan) (2)

References:
(1) http://oaks.of.the.world.free.fr/quercus_daimingshanensis.htm;
(2) http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=210000362
(3) http://www.tropicos.org/Name/13101192
Illustration



Additional information and links on the genus Quercus:
Plants List: Quercus
Oaks of The World 
Quercus images on Google
Oak images on Google
List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List Search: (Type Quercus)
eFlora - Quercus




Wednesday

Quercus palmeri



Name: Quercus palmeri

Synonyms:  Quercus dunnii, Quercus chrysolepsis var. palmeri

Local Names:   Palmer's Oak, Palmer Oak, Dunn Oak

Acorn:    Acorn 2-3 cm long; oblong to spindle-shaped; having an abruptly projecting point (mucronate); enclosed 1/4 by cup; cup sessile or nearly so, thin, wider than nut, scales covered with orange tinged glandular hairs; maturing in 2 years, from August to October

Leaves:    The leaf of the Quercus dunnii is 1.2-5 x 1-3 cm; elliptic or rounded; leathery; not convex; with wavy margins , sometimes rolled backward or downward or rolled at the tip of the margins (revolute). It is the spiniest of the oak species with 3-9 sharp teeth each side. It is grey green and glabrous adaxially; yellowish green tomentose abaxially, with prominent veins; no stellate hairs below; 3-8 vein pairs; petiole 2-5 mm, round in cross section;

Range:    Quercus dunnii is a native of California, Baja California and Arizona. It is usually an evergreen shrub. Map

References:    (1) (2) (3) Illustrations: (4)

Additional Information on Quercus Palmeri:
www.calflora
www.naturesongs
www.plants.usda.gov

Additional information and links on the genus Quercus:
Plants List: Quercus
Oaks of The World 
Quercus images on Google
Oak images on Google
List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List Search: (Type Quercus)
eFlora - Quercus




Tuesday

Quercus grisea



Name:
Quercus grisea Liebm 1854 (Q.grisea is actually a complex of two species : 1. Q.grisea Liebmann = gray oak, mountain white oak ; the type described below;  the specimen named Q.endemica C.H.Muller 1937 are actually identical; several hybrids with : Q.gambelii, Q.mohriana, Q.arizonica, Q.turbinella; 2. Q.arizonica Sargent 1895 (Oaks of the World.Free.Fr) (1)

Synonyms:   Quercus undulata Torr. var. grisea (Liebm.) Engelm. 1877, Quercus oblongifolia Coult., not Torr. 1853, nor R.Br. ter 1871

Local Names:    Scrub oak, Gray oak , Mountain white oak, Mexican Blue Oak

Acorn:    The acorn  measures 1.2-2 cm long; singly or paired; short peduncle 0-1.5 cm long; cup scaly, half-round, glabrous, enclosing 1/3 to 1/2 of nut; maturing in 1 year; cotyledons connate;(1)

Leaves:    2-8 x 1-4 cm; semi-evergreen; oval elliptic; entire; thick, stiff; margin rolled under, sometimes some mucronate teeth; base rounded, apex pointed; glaucous grey above with scattered stellate hairs; hairy beneath (with 4-11 rayed spreading trichomes); 6-10 vein pairs; petiole pubescent, 3-10 mm long;(1)

Images: Tree, Acorn and Leaves, Acorn and Leaves

Range: Limited distribution overall, gray oak is relatively common in the Trans-Pecos area of Texas [50].  Its range extends from Texas westward into the mountains of central and southern New Mexico [48]. Gray oak is less common in central and southeastern Arizona [35,60]. The scattered populations of gray oak in northern Mexico extend southward to Durango and westward from Coahuila to Sonora (http://www.fs.fed.us/database/feis/plants/tree/quegri/all.html) See Map. (2) (3)

References:    (1)  (2)  (3)  

Additional information and links on the genus Quercus:
Plants List: Quercus
Oaks of The World 
Quercus images on Google
Oak images on Google
List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List Search: (Type Quercus)
eFlora - Quercus




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