Quercus emoryi

Torrey in W. H. Emory

in W. H. Emory, Not. Milit. Reconn., 151, plate 9. 1848.

Common names: Emory oak bellota
Illustrated
Synonyms: Quercus hastata Liebmann
Treatment appears in FNA Volume 3.

Trees or shrubs, evergreen, to 15 m. Bark dark-brown to black, deeply fissured. Twigs dark reddish-brown, 1-3 mm diam., pubescent. Terminal buds reddish-brown, ovoid to subconic, 2.5-6.5 mm, glabrous except for tuft of hairs at apex, occasionally hairy on distal 1/2. Leaves: petiole 3-7 (-10) mm, pubescent. Leaf-blade ovate to narrowly oblong to obovate, planar, 28-95 × 15-45 mm, base cordate, margins entire or spinose, with up to 13 awns, apex blunt to acute; surfaces abaxially glabrous except for tuft of tomentum on each side of midrib at base of blade, rarely completely glabrous, adaxially not rugous, glabrous or with a few hairs along midrib. Acorns annual; cup cupshaped, 5-7.5 mm high × 7-12 mm wide, covering 1/4-1/2 nut, outer surface pubescent to sparsely puberulent, inner surface pubescent to floccose, scale tips appressed, blunt; nut ellipsoid to oblong, 10-18 × 6-10 mm, glabrous to puberulent, especially at apex, scar diam. 3-5.5 mm.


Phenology: Flowering spring.
Habitat: Foothills and slopes
Elevation: 1000-2200 m

Distribution

V3 694-distribution-map.gif

Ariz., N.Mex., Tex., n Mexico

Discussion

Quercus emoryi reportedly hybridizes with Q. graciliformis (= Q. ×tharpii C. H. Muller).

Selected References

None.

Lower Taxa

None.
... more about "Quercus emoryi"
blunt +  and acute +
Kevin C. Nixon +
Torrey in W. H. Emory +
furrowed +  and smooth +
dark-brown;black +
fissured +
cordate +
2-6-lobed +
pistillate +, capitate +  and spicate +
Emory oak +  and bellota +
connate +  and distinct +
starchy +  and fleshy +
tuberculate +
cup-shaped +
×7-12 +, 5mm +  and 7.5mm +
multibracteate +, spiny +  and scaly +
Ariz. +, N.Mex. +, Tex. +  and n Mexico +
1000-2200 m +
pistillate +  and staminate +
biennial +, annual +  and maturation +
1-seeded +  and winged +
in groups +  and enclosed +
Foothills and slopes +
pistillate +, spicate +  and staminate +
pubescent +  and floccose +
silky-tomentose +
2.8 cm28 mm <br />0.028 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
planar +, ovate +  and narrowly oblong +
arranged +  and alternate +
spinose +  and entire +
toothed +  and entire +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
glabrous +  and puberulent +
1/4 +  and 1/2 +
ellipsoid +  and oblong +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
pubescent +  and sparsely puberulent +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering spring. +
in W. H. Emory, Not. Milit. Reconn., +
distinct +
few-to-many +
reduced +
0.3 cm3 mm <br />0.003 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
anastomosing +, branching +  and unbranched +
Illustrated +
inconspicuous +
distinct +
linear-spatulate +
Quercus hastata +
Quercus emoryi +
Quercus sect. Lobatae +
species +
hairy +  and glabrous +
ovoid +  and subconic +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
bristle-tipped +
dark reddish-brown +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
shrub +  and tree +