Compare sources for Quercus kelloggii

SW Oregon, California, Sierra Nevada ; to 2400 m; introduced in Europe in 1878;

reached 25 m, but is a 5 m tall shrub at high elevations; ascending branches; roundes crown, stout trunk;

Deciduous, large tree often 75’. Shrubby at high elevations, crooked trunk.

7.5-20 x 5-13 cm; thick, leathery; apex pointed, base obtuse or cordate; margin deeply 7-11 lobed; toothed lobes (13-30 bristled teeth); lustrous green, hairless above; paler beneath with some stellate hairs at vein axils; veins raised on both sides; petiole 1-5 cm long, sometimes pubescent;

• 5 1/2”
• thickish glossy, deeply lobed
• underleaf pale green
• emergins leaves (Mar-Apr) reddish or purplish, like many E NA oaks, but unlike other western species
• new leaves and twigs covered by hoary whitish fuzz on smaller trees at higher elevations

acorn 2-3 cm; elliptic; brown, puberulent near apex; very short stalk, or almost sessile; deep cup enclosing 1/2-2/3 of nut, with pale brown, flat, papery, over 4 mm long scales; maturing in 2 years; edible;

• 1 1/4”
• very deep cup often covering more than 1/2 of nut
• scales thin poiinted, long and loose

March to May; male flowers on 4-7.5 cm long catkins; female 1 to 6 together;

mature trunks dark and deeply furrowed with broad irregular ridges

large, pale, pointed

hardy; all types of soils, but prefers lime-free ones; thrive in well drained soils; slow-growing, long-lived; young plants have a low growth rate during 2-3 years;

• Common in sandy or gravelly soils of valleys and slopes
• often in pure stands or mixed with confiers
• Only occasionally cultivated within native range
• zones 7-9

– A.Camus :n° 430; – Sub-genus Quercus, section Lobatae, Series Agrifoliae (with agrifolia , parvula , wislizeni ) – Resembles Q.velutina ; – Hybridizes with Q.agrifolia ( = x ganderi ) and Q.wislizeni ( = x morehus ) ;