sometimes written gallaecicus
Spain
= x chasei McMinn, Babcock & Righter 1949
5 m ; California (San Diego) ; leaves oboval, with irregular and shallow lobes, thick, sharp-toothed, tomentose beneath; semi-persisetnt ; acorn maturing in 1 year; rare ;
Alabama, Louisiana, Arkansas ;
New Jersey, Delaware ;
S.W. California ;
Texas ;
Florida ;
Texas ;
= x porteri Trel. 1917, nom. inval.
Tennessee ;
1812 (pro sp.)
= aquatica var. heterophylla (F.Michx.) A.DC 1864, nom. illeg.
= x hollickii C.K.Schneid. 1904
Bartram's hybrid oak;
East United States; native where parents are meeting; introduced in Europe in 1750 ; 16m ; leaves 5-8 cm long, lanceolate, oblong, with 1 to 4 small spiny teeth on each side at the end of shallow lobes; lustrous dark green above, paler beneath with beige pubescence; leaves shape is variable; twigs glabrous; hardy; requires lime-free soils; vigourous;
intermediate between the parents; large leaves with 12-16 pairs of lateral veins, auricled base and short petiole; flowers and fruits resemble those of robur; fertile seeds;
For Govaerts & Frodin, it is a cultivar...
alba X muehlenbergii
USA
cerris
x suber
= crenata Lam. 1785 = not resolved synonym
= x pseudo-suber Santi 1795
= cerris var. lucombeana Loud. 1838
= x lucombeana Holway 1772 & Sweet 1827
= x aegylopifolia Pers.1807
= x fontanesii Guss. 1825
= cerris var. fulhamensis 1838
= x fulhamensis Steud. 1841
= x haliphleos Guss. 1844
= x pseudocerris Lojac. 1907, not Boiss. 1853, nec Rouy 1910
false spanish cork-oak; Lucombe'oak;
15 m, but reaches sometimes 30m, trunk more than 2m in diameter; bark
variable : grey, light, furrowed ou smooth,or broken into corky plates;
young twigs grey brown densely pubescent becoming glabrous; terminal bud
scaly (lateral buds not scaly); leaves 4-7 x 3-4 cm, semi-evergreen, oblong,
pointed, base truncate or cuneate; 5-9 regular lobes on each side, mucronate,
with sinuses half-way to the midrib; lustrous green above when silvery
grey hairs have fallen, glaucous pubescent beneath; petiole tomentose
1 cm; male flowers crimson becoming yellow, on 4 cm catkins; acorn 2.5
cm, brown, apex slightly depressed, on thick, tomentose, 1 cm long stalk;
enclosed 1/3 by cup; cup with small, pliable, twisting, reflected, 0.2-0.5 cm
long scales; maturing in 2 years; all types of soils;
-- rather variable taxon, depending on whether Q. cerris or Q.
suber is dominant; consequently, various names have been applied to
this species...
For Govaerts & Frodin (1998), Q. x turneri A.DC (not
Willd.) is a synonym
= Q. x pseudoturneri C.K.Schneid. 1904
= Q. x turneri var. pseudoturneri (C.K.Schneid.)Elwes and Henry
1910
while the species named Q. x turneri Willd. is actually a cultivar
(for the description see Q. x turneri below).
For the same Authors, Q.
fontanesii is a hybrid between Q.
gussonei and Q. suber,
in France and Spain.
dentata x wutaishanica
Central-north China;
= x subconvexa Tucker 1953
California ;
Missouri, Illinois ;
Japan
Arkansas ;
= livermorensis C.H.Muller 1938
Texas ;
Missouri ;
18 m ; crown rounded; leaves deciduous, with short lobes, slightly pubescent beneath; hardy; all types of soil; S.E. Canada ; cultivated since 1916 ;
California ;
Texas ;
= numidica Trab. 1889
= x pseudosuber var. castaneifolia Wenz. 1884
Algeria;
2 subspecies:
1/ nothossp kerneri
= x kanitziana Borbas 1887
= x hariotii Hy 1902
= Q. sublanuginosa Borbas 1886
= x pseudodalechampii Cretz. 1943
= x csatoi Borbas 1886
= x teriana Vicioso 1950
twig tomentose blackish; bud ovoid, pointed, 3-5 mm long, with pubescent brown scales; leaves 4-6 x 3.5-4.5 cm, obtuse, broad; base auricled, broad lobes, deep sinuses; 5 vein pairs; petiole tomentose 4-8 mm; acorn infertile;
for some authors, Q. x csatoi is a synonym for Q. x rosacea;
2/ nothossp monserratti (Vicioso) Rivas Mart. & Saenz de Rivas 1991
= x montserratii C.Vicioso 1948
12-15 m ; bark dark brow, rough; twig white tomentose at first, becoming glabrous;
leaves 5-11 x 3-5 cm, both sides glabrous, with small triangular lobes and acute sinuses; acorn on a 2-3 cm pubescent stalk;
For C. Vicioso, this taxon is a hybrid between Q. x cerrioides and Q. robur;
cerris
x wislizeni
For Govaerts & Frodin, it is a cultivar...
= dumosa var. kinseliae C.H.Muller 1940
evergreen shrub; leaves less than 4cm long, with numerous lobes, with stellate hairs that are short above and long beneath; only in Sta Barbara County (Sta Inez Mountains) ;
imbricaria x velutina (for
Engelmann it is imbricaria x coccinea) ;
= Lea's hybrid oak;
East of North America; native where parents are meeting; 20 m tall; leaves
10-18cm long, almost entire or with weakly lobed, sinuate margin; sometimes
1-4 pointed lobes, bristle-tipped; base always asymmetrical; lustrous
dark green above, dull beneath with rusty hairs along midrib; bark shallowy
ridged; hardy; requires lime-free soils;
the species is probably fixed, as it gives spontaneous seedlings in France;
named after T.G.Lee who discovered it in 1830 ;
native; hardy; all types of soils; fast growing; in the trade it is essentially the cultivar "Rotterdam" ;
leaves broader than those of Q. libani ;
Italy ;
= x subfalcata Trelease 1917 (in fact falcata x phellos)
= x ludoviciana var. subfalcata (Trel.) Rehd. 1926
Ludwig's hybrid oak;
S.E. United States (especially Louisiana); natural hybrid; introduced in Europe in 1880 ;
20m tall; crown conical; leaves 10-20cm, first copper-brown , then golden, turning dark green; variously lobed with one larger, pointed lobe each side; lobes bristle-tipped or broad and rounded, with or without teeth; many tufts along midrib; bark smooth, dark grey, pink streaked; buds small, red brown; hardy; prefers lime-free soils and wet undergrowth; rare ; solitary tree;
