Quercus kelloggii (California Black Oak)

 11/4/16 Idyllwild County Park, San Jacinto Mountains, 

Riverside County, CA

 11/4/16 Idyllwild County Park 

11/4/16 Idyllwild County Park

 7/9/16 Donnell Vista, 6,300' elevation, Hwy. 108 (Sonora Hwy.), 15 miles west of Strawberry, Stanislaus National Forest, Tuolumne County, CA

7/9/16 Donnell Vista

LIFE LIST NOTES:

COMMON NAME: California Black Oak

SPECIES: Quercus kelloggii

FAMILY: Fagaceae (Oak Family)

LIFE LIST DATE: 7/9/2016

LOCATION: Donnell Vista, day use area at 6,300' elevation off Hwy. 108 (Sonora Hwy.), 15 miles west of Strawberry, Stanislaus National Forest, Tuolumne County, CA

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Treatment from The Jepson Manual (1993):

Tree < 25 m, deciduous; trunk bark becoming deeply furrowed, checkered, dark gray-brown to black

Leaf (6)9–20 cm; petiole (3)10–40 mm; blade widely elliptic, obovate, or ± round, tip generally acute, bristled, margin generally deeply 6-lobed, each lobe with 1–4 coarse, bristle-tipped teeth, upper surface glabrous, bright green, lower surface finely tomentose when young, becoming ± glabrous, pale green

Fruit maturing in 2 years; cup 16–25 mm wide, 15–25 mm deep, generally cup-shaped, scales thin, flat, glabrous to puberulent; nut 20–35 mm, oblong-ovoid, puberulent, tip generally obtuse, shell woolly inside

Ecology: Slopes, valleys, woodland, coniferous forest

Elevation: 200–2400 m.  

Bioregional distribution: California Floristic Province (except Great Central Valley, South Coast, Channel Islands) 

Distribution outside California: Oregon, Baja California

Hybridizes with  Q. agrifolia, Q. wislizeni. 

Horticultural information: DRN: 1, 4, 5, 6, 15, 16, 17 &IRR or part SHD: 2, 3, 7, 8, 9, 14, 18, 19, 20, 21.