Oaks of the World

General data Classifications List of species Local names Back to
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  Quercus marilandica
Author (L.)Muenchh. 1770
Synonyms dilatata Raf. 1838
ferruginea F.Michx. 1811
marilandica var. ashei Sudw. 1922
neoashei Bush 1928
nigra Wang. not L.
nigra var. quinqueloba A.DC 1864
nigra var. marilandica L. 1753
nigra var. integrifolia Marshall 1785
nobilis Mast. 1875
Local names blackjack oak ;
Range East and Southeast USA; to 1000 m; introduced in Europe in 1739;
Growth habit 3-9 m (sometimes more, to 17 m); crown rounded, low, irregular;
Leaves 6-15 x 5-10 cm; oboval; 3 (rarely 5) pointed lobes at apical 1/2; base cuneate; leathery, thick; shiny green above; rusty tomentose beneath; midrib white; petiole pubescent 2-3 cm long;
Flowers staminate and pistillate in early summer;
Fruits acorn 1-2 cm, globose or nearly so; pale brown; stout peduncle 0.5 cm long; enclosed 1/2 by cup; cup top-shaped, with tomentose scales;

Bark, twigs and
buds

bark black, rough, thick, fissured into broad, square plates; twigs grey brown, tomentose becoming hairless, stout; bud conical 5-10 mm long, pubescent, pentagonal in cross-section;
Hardiness zone, habitat hardy; prefers lime-free, sandy soils, even poor; slow-growing;
Miscellaneous -- A.Camus : n° 415;
-- section Lobatae ;
-- described in 1704 after a tree from Maryland ; very rare in Europe ;
-- hybridizes with
Q.velutina
(=
Q.x bushii Sarg.),
Q.ilicifolia
(=
Q.x brittonii),
Q.imbricaria
(=
Q.x tridentata),
Q.phellos
(=
Q.x rudkini) ;
Subspecies and
varieties
---var. ashei Sudw. = Q.neoashei Bush (actually it is the type, but occuring in the western part of its range; leaves a little bit smaller);
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