Botanical data |
Classifications | List of species |
Local names |
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QUERCUS
HYBRIDS A to F
|
|
NAME
|
DESCRIPTION
|
x acutidens Torr. 1858 |
cornelius-mulleri x engelmannii
(for Nixon and Steele in 1980) |
x
albescens Rouy ex A.Camus 1935 |
ilex
x pubescens = x subalbescens A.Camus 1939 both twigs and 2-3 mm long buds tomentose; leaves 4-8 x 2,5-4 cm, subleathery, tomentose beneath, base asymmetrical or truncate, apex obtuse, margin wavy, sinuate-dentate, with pointed, irregular teeth; midrib prominent beneath; 5-7 vein pairs; petiole tomentose 0.5-1 cm; fruit on very short pecuncle; cup with appressed pubescent scales; acorn with attenuate apex, stylopodium hairy, basal scare small, stigmas divergent; SE France; NE Spain; |
x alienoides Uyeki 1932 | acutissima
x aliena Korea; |
x alienoserratoides T.B.Lee 1961 | aliena
x mongolica x serrata Korea ; |
x allorgeana A.Camus 1935 | faginea
x pubescens var. subpyrenaica Northern Spain; |
x
alvordiana Eastwood 1905 |
douglasii
x turbinella or douglasii x john-tuckeri = dumosa var. alvordiana (Eastw.) Jepson 1910 no more than 3 m; semipersistent ; leaves 1.5-5 cm, apex rounded, base cuneate, margin weakly lobed and coarsely toothed, glaucous above, minutely tomentose beneath; acorn 2-4 cm, enclosed for 1/4 in cup with warty scales; maturing in 1 year; California, at 400-1300 m ; |
x
andegavensis Hy 1895 |
pyrenaica
x robur = x henriquezii Franco & Vasc. 1954 = x rechinii Hy 1896 usually, Q. pyrenaica is dominant ; twigs are pubescent; buds 4-8 mm, tomentose; leaves tomentose beneath, at least along veins, with petiole tomentose; acorn with peduncle 1-3 cm, tomentose; France, Spain; Actually one must distinguish Q. x rechinii, in which Q. robur is dominant ; twigs glabrous; bud glabrescent, 3-5 mm; leaves glabrous on both faces, petiole glabrous; acorn with hairless, 2-4.5 cm peduncle; |
x
andresii R. Alonso & al. 1999 |
faginea
X pauciradiata NW Spain |
x andrewsii Sarg. 1918 | macrocarpa
x undulata less than 3m tall; Oklahoma ; |
x anselmii Sennen 1928 | canariensis
X pubescens = desmotricha O.Schwarz 1936 leaves semi-evergreen, 9-11 cm long, lobed, with 7-8 vein pairs, white tomentose beneath when young, pubescent above with stellate hairs; petiole 2 cm long; Spain. -- For Govaerts & Frodin, it is a synonym of Q. cerrioides, but these Authors are in disagreement with A. Camus and O. Schwarz (among others) who feel that Q. cerrioides is a hybrid between Q. faginea and Q. pubescens. -- For today's Spanish specialists in hybrid oaks in Spain (Alexis Rosell), Q. x anselmii is more exactly the hybrid between Q. cerrioides and Q. canariensis var. ovata; therefore it differs from the closely related Q. desmotricha (= canariensis var. carpinifolia x pubescens). |
x arrimatensis Penas, Llamas, Pérez Morales & Acedo 1997 |
pauciradiata X petraea Spain; |
x
asheana Little 1943 |
incana
x laevis = ashei Trel. 1917 nom. nud. ; not Sterrett 1922 nom. illeg. Florida; (ashei Sterret = Q. similis) |
x atlantica Ashe 1916 | incana
x laurifolia (or hemisphaerica) = x sublaurifolia Trel. ex E.J.Palmer 1948 SE USA ; |
x audleyensis Henry | ilex
x petraea = koehnei Ambrosy ex C.K.Schneid. = Q. 'Audleyensis' |
x
autumnalis Vasquez, Ramos & Doncel 2002 |
ilex
X rotundifolia Spain |
x auzandei Gren. & Godron 1855 | coccifera
x ilex ssp ilex = coccifera var. auzandei (Gren. & Godr.) Jahand. & Maire 1932 = coccifera ssp auzandei (Gren. & Godr.) Batt. 1890 = x agrifolia Batt. & Trab. 1890 = x trabutiana Maire 1926 = x aquifolia Trab. 1905 = x catalaunica Sennen 1912 = x airensis Franco & Vasc. 1954 = x comari Albert 1902 = x denudata Albert 1902 = x mestoides Reynier in Albert 1902 = x reynieri Albert 1902 = x soluntina Tineo ex Lojac. 1907 = x rouxii A.Camus 1935 -- sometimes written : x auzandrii, or x auzendei small shrub; leaves evergreen 1.5-2.5 cm x 1.4-2; oblong-elliptic, dark green above, glaucous tomentose beneath; margin wavy with small mucronate teeth; 5-7 vein pairs; petiole hairy, 3.5 cm; cup with appressed, slightly pubescent scales; bud subglobose, with persistent bracts; very rare; France, Spain, Portugal, Morocco, Algeria, Sicily, Greece; For some authors, Q. x rouxii (= Q. x airensis) is a hybrid between Q. coccifera and Q. ilex ssp ballota ; leaves 1.5-2 cm, oblong, wavy, glaucous, tomentose, with minutely toothed margins; cup scales glabrous or nearly so; bud with thin bracts 5 mm long, shortly woolly pubescent; |
x baenitzii A.Camus 1939 | cerris
x pubescens Italia ; |
x basaseachicensis C.H.Muller 1938 | depressipes
x rugosa Mexico (Chihuahua) ; |
x battandieri A.Camus 1936 | coccifera
x faginea ssp broteri var. tlemcenensis = coccifera f. angustifolia Laguna 1883 Algeria ; Spain ; |
x beaumontiana Sarg. 1918 | falcata
x laurifolia Texas ; |
x
bebbiana C.K.Schneid. 1904 |
alba
x macrocarpa Bebb's oak Height and width to 15 m and more; oval crown; twig corky; leaves tomentose beneath; cup scales tomentose; acorn like Q. alba; hardy; Eastern USA |
x
beckyae Gaynor 1987 |
macrocarpa
x prinoïdes Michigan ; |
x beguinotii Gavioli 1935 | dalechampii
x pubescens Italy ; |
x
benderi Baenitz 1903 |
coccinea
x rubra reaches 25 m tall; intermediate characters between those of parents; beautifull at fall; hardy; Eastern USA |
x bernardensis W.Wolf 1918 |
prinus (montana) x stellata |
x bimundorum E.J.Palmer 1948 | alba
x robur Bimundors oak; to 20 m tall; acorn reddish; prefers light soils; hardy; central-west to north-east USA |
x blufftonensis Trel. 1917 | falcata
x laevis South Carolina; |
x brittonii W.T.Davis 1892 | ilicifolia
x marilandica = ferruginea hybrida Dippel shrub or small tree; splendid at fall; leaves lately deciduous; hardy; Pennsylvania, New York, New Jersey ; |
x
budensis (Borbas)Borbas 1878 |
pubescens x virgiliana |
x burnetensis Little 1943 | macrocarpa
x virginiana = x coloradensis Ashe 1922, nom. illeg. Texas ; |
x bushii Sarg. 1918 |
marilandica x velutina
|
x
byarsii Sudworth 1924 |
macrocarpa x michauxii |
x caduca Trel. 1924 | incana
x nigra from south-eastern USA to Texas ; |
x
caesariensis Moldenke 1953 |
falcata
x ilicifolia New Jersey |
x calvescens Vukot. 1883 |
pubescens x petraea --- In Spain, the taxon named
Q. x costae is treated as a hybrid between Q. pubescens
and |
x cantabrica C.Vicioso 1950 | (petraea
x pyrenaica) x robur both twigs and buds glabrous; leaves 10-20 x 8-13 cm, both sides glabrous, terminal lobe elongated, base auricled; small acorn 1.5-2 cm with hairless peduncle 3-5 mm; cup with lanceolate, convex scales reaching beyond the rim; acorn broad, a little longer than the cup, apex depressed (so that the short, pubescent stylopodium is hidden); 4 styles with stigmas divergent at their base; Northern Spain; |
x
capesii W.Wolf 1945 |
nigra x phellos |
x carrissoana A.Camus 1935 | canariensis
x robur Morocco; Spain; For some Authors (O.Schwarz), it is a synonym of Q. viverii Sennen. |
x celtica Vasquez & al. 2003 | fruticosa
X suber Often less than 3 meters tall; Portugal |
x cocksii Sarg. 1912 | laurifolia
x velutina Louisiana ; |
x columnaris Laughlin 1964 | palustris
x rubra Illinois ; |
x comptoniae Sarg. 1918 |
lyrata x virginiana |
x coutinhoi Sampaio. 1910 | faginea
x robur = x ferreirae A.Camus = x molleri A.Camus 1934 rarely exceeding 3m; Portugal ; |
x
cravenensis Little 1943 |
incana
x marilandica = x caroliniensis Trel. 1917, nom. illeg. S.E. USA to Texas ; |
x deamii Trel. 1917 | macrocarpa
x muehlenbergii tall tree; = x fallax E.J.Palmer 1948 Eastern USA |
x
demareei Ashe 1926 |
nigra
x velutina Arkansas, Louisiana ; |
x
diosdadoi Vasquez & al. |
pyrenaica
X rotundifolia Spain |
x
discreta Laughlin 1961 |
shumardii
x velutina Missouri ; |
x diversiloba Tharp ex A.Camus 1952 | laurifolia
x marilandica Texas ; |
x diversifrons Borbas 1887 | petraea x virgiliana |
x drummondii Liebm. 1854 | margaretta
x stellata = x pseudomargarettiae Trel. 1924 (pro sp.) [also "pseudomargaretta"] = stellata var. drummondii (Liebm.) Trel. 1924 Drummond post oak , false sand post oak ; Texas (Cross Timbers region) ; |
x dysophylla Benth. 1840 | crassifolia
x crassipes = hahnii Trel. 1924 = dysophylla Née "laurelillo" 10 m tall, sometimes more; leaves 5-9cm long, 2-4cm wide; deciduous ; bullate; thick, leathery, oval lanceolate to elliptical, base rounded to cordate, apex pointed; margin entire, undulate, revolute; smooth, bright dark green above with some stellate hairs along midrib; densely tomentose 0.5 mm long beneath; 15-17 pairs of lateral veins, forked and prominent beneath; petiole hairy, coffee-coloured, 3-5mm long; acorn ovoid 1.5 cm, solitary or paired; cupule shallow, half-round, with thin and rounded scales, grey brown, maturing in 1 year; twigs grooved, smooth, pinkish grey; buds ovoid, red brown, 5-9mm long; tender; sub-genus Erythrobalanus ; Mexico (Michoacan, Hidalgo, Mexico, Veracruz, San Luis Potosi) ; 2000 to 2500 m ; -- For Govaerts & Frodin, Q. hahnii (A. Camus : n° 308) is a separate species. -- For today's Mexican Authors (S.Valencia-A., 2004), Q. esperanzae Trel. (= Q. fournieri Trel.) is a synonym of Q. x dysophylla. |
x
egglestonii Trel. 1924 |
imbricaria
x shumardii Kentucky, Missouri ; |
x elisae Fries | canariensis
x robur x huguetiana leaves shape halfway between those of parents; north-east Spain; 3 varieties are described, depending on the variety of Q. canariensis: _ var. major: (canariensis var. mirbeckii), leaves 15-20 cm long, with 5 pairs of lobes; _ var. media: (canariensis var. carpinifolia), leaves 8-10 cm long, with 5 pairs of lobes; _ var. minor: (canariensis var. ovata), leaves 5-7 cm long, with 3 pairs of lobes; |
x eplingii C.H Muller 1938 | douglasii
x garryana California ; |
x exacta Trel. 1917 | imbricaria
x palustris laurelpin oak glossy foliage; dense canopy; virgorous; tolerate alkaline soils; hardy; Illinois, Pennsylvania, Indiana ; |
x fagineomirbeckii Villar 1938 | canariensis
x faginea = x jahandiezii A.Camus 1939 = x pseudofaginea A.Camus 1939 = x marianica C.Vicioso 1950 Spain; Portugal (Serra de Monchique) ; Algeria ; Morocco ; |
x fangshanensis Liou 1936 |
dentata x mongolica ssp crispula
(for Liou) ; |
x faxonii Trel. 1917 | alba
x Prinoideaees Eastern USA ; |
x
fenchengensis H.Wei Jen & L.M.Wang 1984 |
aliena
var. acutiserrata x dentata China (Liaoning, Shaanxi, Zhejiang, Hubei, Jiangxi, Anhui) ; |
x
fernaldii Trel. 1924 |
ilicifolia x rubra |
x fernowii Trel. 1917 | alba
x stellata Eastern USA ; |
x filialis Little 1943 | phellos
x velutina = x dubia Trel. 1917, not Ashe = x inaequalis E.J.Palmer & Steyermark 1935 north-center and east of USA ; |
x firmurensis Hy 1898 | pubescens
x pyrenaica both twigs and 3-5 mm long buds densely tomentose; leaves 5-7 x 3.55 cm, semi-evergreen, glabrescent above, densely tomentose beneath; petiole 0.5-1 cm, tomentose; cup with pubescent, greyish scales; acorn stalkless or with a peduncle shorter than the petiole. For some Authors, Q. x firmurensis = Q. humilis ssp lanuginosa (Lam.) Franco and Lopez 1987..., thus = Q. pubescens ssp palensis sensu O.Schwarz; France; Spain; |
x fontana Laughlin 1967 | coccinea
x velutina Missouri ; |
x fontqueri O.Schwarz 1936 |
pyrenaica x canariensis
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