File Size: 70 KB
Quercus velutina  Lam.
Riley County, Kansas
Height: To 98 feet
Family: Fagaceae - Beech Family
Flowering Period:   April, May
Trunks: Erect; bark dark gray to black, furrows deep, ridges rounded, short, blocky; wood reddish brown, hard.
Twigs: Reddish brown, rigid, sparsely pubescent or glabrescent; leaf scars half-round; buds reddish brown, angular-ovoid, .12 to .48 inch, apex obtuse, scales strigose to tomentose.
Leaves: Deciduous, alternate, simple; petiole 1 to 2.8 inches, glabrous or sparsely pubescent; blade elliptic to obovate in outline, 4 to 12 inches long, 3.2 to 6 inches wide, base obtuse to truncate, margins 5-9-lobed per side, lateral lobes oblong or more or less inversely trowel-shaped, tapering or slightly expanded distally, spreading or slightly projecting forward, each lobe with 2-10 teeth, terminal lobe similar to lateral lobes, sinuses extending 2/5 to 4/5 distance to midrib, lobe apex acute, bristle-tipped, lower surface green to light green, brown-tomentose, upper surface dark green, shiny, glabrous.
Flowers: Inflorescences staminate catkins at base of new growth, 25-35-flowered, pendent, 2.8 to 3.5 inches; peduncle .2 to 1 inch; pedicels absent; pistillate spikes axillary from new growth, 1-3-flowered; peduncle to .3 inch; pedicels absent. Flowers unisexual, more or less radially symmetric; staminate: sepals 2-6, connate, calyx lobes .07 to .09 inch; petals absent; stamens 4-6; pistillate: sepals 6, connate; petals absent; pistil 1; styles 3.
Fruit: October; acorns, maturing second year; peduncle 0 to .4 inch; cup top-shaped, .28 to .55 inch long, .48 to .86 inch wide, enclosing 1/2 to 3/4 of nut, scale apices spreading; nut reddish brown, ovoid to nearly spherical, .4 to .7 inch, glabrous or minutely pubescent; seed 1.
Habitat: Dry, rocky slopes and upland woodlands, often in sandy soils.
Distribution: East 1/3 of Kansas
Origin: Native
Comments: Quercus velutina is the only native Kansas oak with densely tomentose, 5-angled buds and acorn cap scale apices spreading. Black oak hybridizes with blackjack oak.

Black oak leaves
94 KB
Riley County, Kansas
Black oak staminate catkins
94 KB
Riley County, Kansas
Black oak pistillate flowers
66 KB
Riley County, Kansas
Black oak buds
38 KB
Riley County, Kansas
Black oak fruit
56 KB
Riley County, Kansas
Black oak leaf
100 KB
Riley County, Kansas
Black oak bark
171 KB
Riley County, Kansas