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| − | --><span class="statement" id="st-d0_s0" data-properties="shrub duration;shrub duration;shrub atypical some measurement;shrub some measurement"><b>Shrubs,</b> subevergreen or evergreen, 1-3 (-5) m.</span> <span class="statement" id="st-d0_s1" data-properties="bark coloration;bark coloration;bark architecture or pubescence"><b>Bark </b>light gray or brown, scaly.</span> <span class="statement" id="st-d0_s2" data-properties="twig coloration;twig coloration;twig diameter;twig diameter;twig pubescence"><b>Twigs </b>yellowish or dingy gray, 1-1.5 (-2) mm diam., densely tomentulose.</span> <span class="statement" id="st-d0_s3" data-properties="bud coloration;bud shape;bud shape;bud atypical some measurement;bud some measurement;bud pubescence;margin architecture or pubescence or shape"><b>Buds </b>brown, ovoid or globose, 1.5-2 (-3) mm, glabrous except for ciliate margins of scales;</span> <span class="statement" id="st-d0_s4" data-properties="proximal scale coloration;proximal scale pubescence">proximal scales often yellowish puberulent.</span> <span class="statement" id="st-d0_s5" data-properties="petiole some measurement"><b>Leaves:</b> petiole 1-4 mm.</span> <span class="statement" id="st-d0_s6" data-properties="leaf-blade coloration;leaf-blade shape;leaf-blade shape;leaf-blade atypical length;leaf-blade atypical length;leaf-blade length;leaf-blade atypical width;leaf-blade atypical width;leaf-blade width;leaf-blade width;leaf-blade texture;leaf-blade fragility;base shape;base shape;base shape;margin shape;margin shape;secondary-vein atypical quantity;secondary-vein quantity;vein architecture;tooth quantity;apex shape;apex shape"><b>Leaf-</b>blade unicolored, elliptic or obovate, (10-) 15-30 (-40) × (8-) 10-15 (-20) mm, thick and leathery, often brittle, base truncate or rounded-attenuate, rarely subcordate, margins irregularly spinose-toothed, occasionally shallowly lobate, secondary-veins (3-) 4-7, often some veins branching near margin and passing into more than 1 tooth, apex acute or rounded;</span> <span class="statement" id="st-d0_s7" data-properties="surface coloration;surface coloration;surface coloration;surface coloration;surface coloration;surface coloration;surface density;surface density;surface density;hair arrangement or shape;hair diameter;hair count or density;hair arrangement;hair coloration;glandular-hair reflectance;glandular-hair coloration;hair arrangement or shape">surfaces abaxially waxy grayish, light green, or yellowish, sparse to moderately dense (8-) 10-12-rayed, (loosely) appressed-stellate hairs, often 0.2-0.5 mm diam., and sparse to crowded, yellowish, glandular-hairs, adaxially dull grayish, with stellate hairs, similar to abaxial surface.</span> <span class="statement" id="st-d0_s8" data-properties="acorn arrangement;acorn arrangement;acorn architecture"><b>Acorns </b>solitary or paired, subsessile;</span> <span class="statement" id="st-d0_s9" data-properties="cup shape;cup shape;cup shape;cup shape;cup width;cup width;cup width;scale coloration;scale coloration;scale relief;scale pubescence">cup cupshaped or obconic to hemispheric, 5-7 mm deep × 10-15 mm wide, thin, scales whitish or yellowish, moderately or scarcely tuberculate, puberulent;</span> <span class="statement" id="st-d0_s10" data-properties="nut shape;nut shape;nut shape;nut shape;nut shape;nut some measurement;apex shape">nut fusiform, ovoid, or conic, 20-30 mm, apex acute.</span> <span class="statement" id="st-d0_s11" data-properties="cotyledon fusion"><b>Cotyledons </b>distinct.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> subevergreen or evergreen, 1-3(-5) m. <b>Bark</b> light gray or brown, scaly. <b>Twigs</b> yellowish or dingy gray, 1-1.5(-2) mm diam., densely tomentulose. <b>Buds</b> brown, ovoid or globose, 1.5-2(-3) mm, glabrous except for ciliate margins of scales; proximal scales often yellowish puberulent. <b>Leaves</b>: petiole 1-4 mm. <b>Leaf</b> blade unicolored, elliptic or obovate, (10-)15-30(-40) × (8-)10-15(-20) mm, thick and leathery, often brittle, base truncate or rounded-attenuate, rarely subcordate, margins irregularly spinose-toothed, occasionally shallowly lobate, secondary veins (3-)4-7, often some veins branching near margin and passing into more than 1 tooth, apex acute or rounded; surfaces abaxially waxy grayish, light green, or yellowish, sparse to moderately dense (8-)10-12-rayed, (loosely) appressed-stellate hairs, often 0.2-0.5 mm diam., and sparse to crowded, yellowish, glandular hairs, adaxially dull grayish, with stellate hairs, similar to abaxial surface. <b>Acorns</b> solitary or paired, subsessile; cup cup-shaped or obconic to hemispheric, 5-7 mm deep × 10-15 mm wide, thin, scales whitish or yellowish, moderately or scarcely tuberculate, puberulent; nut fusiform, ovoid, or conic, 20-30 mm, apex acute. <b>Cotyledons</b> distinct.</span><!-- |
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| | |publication year=1994 | | |publication year=1994 |
| | |special status=Endemic;Selected by author to be illustrated | | |special status=Endemic;Selected by author to be illustrated |
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V3/V3_701.xml | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_701.xml |
| | |genus=Quercus | | |genus=Quercus |
| | |section=Quercus sect. Quercus | | |section=Quercus sect. Quercus |
| | |species=Quercus john-tuckeri | | |species=Quercus john-tuckeri |
| − | |acorn architecture=subsessile
| |
| − | |acorn arrangement=paired;solitary
| |
| − | |apex shape=acute;rounded;acute
| |
| − | |bark architecture or pubescence=scaly
| |
| − | |bark coloration=brown;light gray
| |
| − | |base shape=subcordate;rounded-attenuate;truncate
| |
| − | |bud atypical some measurement=2mm;3mm
| |
| − | |bud coloration=brown
| |
| − | |bud pubescence=glabrous
| |
| − | |bud shape=globose;ovoid
| |
| − | |bud some measurement=1.5mm;2mm
| |
| − | |cotyledon fusion=distinct
| |
| − | |cup shape=obconic;hemispheric
| |
| − | |cup width=thin;×10-15;5mm;7mm
| |
| − | |glandular-hair coloration=grayish
| |
| − | |glandular-hair reflectance=dull
| |
| − | |hair arrangement=crowded
| |
| − | |hair arrangement or shape=stellate;appressed-stellate
| |
| − | |hair coloration=yellowish
| |
| − | |hair count or density=sparse
| |
| − | |hair diameter=0.2mm;0.5mm
| |
| − | |leaf-blade atypical length=30mm;40mm
| |
| − | |leaf-blade atypical width=15mm;20mm
| |
| − | |leaf-blade coloration=unicolored
| |
| − | |leaf-blade fragility=brittle
| |
| − | |leaf-blade length=15mm;30mm
| |
| − | |leaf-blade shape=obovate;elliptic
| |
| − | |leaf-blade texture=leathery
| |
| − | |leaf-blade width=thick;10mm;15mm
| |
| − | |margin architecture or pubescence or shape=ciliate
| |
| − | |margin shape=lobate;spinose-toothed
| |
| − | |nut shape=conic;ovoid;conic;ovoid;fusiform
| |
| − | |nut some measurement=20mm;30mm
| |
| − | |petiole some measurement=1mm;4mm
| |
| − | |proximal scale coloration=yellowish
| |
| − | |proximal scale pubescence=puberulent
| |
| − | |scale coloration=yellowish;whitish
| |
| − | |scale pubescence=puberulent
| |
| − | |scale relief=tuberculate
| |
| − | |secondary-vein atypical quantity=3;4
| |
| − | |secondary-vein quantity=4;7
| |
| − | |shrub atypical some measurement=3m;5m
| |
| − | |shrub duration=evergreen;subevergreen
| |
| − | |shrub some measurement=1m;3m
| |
| − | |surface coloration=yellowish;light green;yellowish;light green;grayish;waxy
| |
| − | |surface density=sparse;moderately dense
| |
| − | |twig coloration=dingy gray;yellowish
| |
| − | |twig diameter=1mm;1.5mm
| |
| − | |twig pubescence=tomentulose
| |
| − | |vein architecture=branching
| |
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| | -->[[Category:Treatment]][[Category:Quercus sect. Quercus]] | | -->[[Category:Treatment]][[Category:Quercus sect. Quercus]] |
Shrubs, subevergreen or evergreen, 1-3(-5) m. Bark light gray or brown, scaly. Twigs yellowish or dingy gray, 1-1.5(-2) mm diam., densely tomentulose. Buds brown, ovoid or globose, 1.5-2(-3) mm, glabrous except for ciliate margins of scales; proximal scales often yellowish puberulent. Leaves: petiole 1-4 mm. Leaf blade unicolored, elliptic or obovate, (10-)15-30(-40) × (8-)10-15(-20) mm, thick and leathery, often brittle, base truncate or rounded-attenuate, rarely subcordate, margins irregularly spinose-toothed, occasionally shallowly lobate, secondary veins (3-)4-7, often some veins branching near margin and passing into more than 1 tooth, apex acute or rounded; surfaces abaxially waxy grayish, light green, or yellowish, sparse to moderately dense (8-)10-12-rayed, (loosely) appressed-stellate hairs, often 0.2-0.5 mm diam., and sparse to crowded, yellowish, glandular hairs, adaxially dull grayish, with stellate hairs, similar to abaxial surface. Acorns solitary or paired, subsessile; cup cup-shaped or obconic to hemispheric, 5-7 mm deep × 10-15 mm wide, thin, scales whitish or yellowish, moderately or scarcely tuberculate, puberulent; nut fusiform, ovoid, or conic, 20-30 mm, apex acute. Cotyledons distinct.
Habitat: Dry slopes, chaparral, pinyon and juniper woodlands, margins of oak woodlands and sagebrush
Elevation: 900-2000 m
Discussion
Dry slopes, chaparral, pinyon and juniper woodlands, margins of oak woodlands and sagebrush; 900-2000 m; Calif.
Endemic to California, Quercus john-tuckeri occurs from Los Angeles County northward in the interior Coast Ranges and Sierra Foothills to the northern edge of Sacramento Valley.
Quercus john-tuckeri bears some resemblance to both Q. turbinella and Q. berberidifolia. Quercus turbinella has pedunculate fruit and cordate leaf bases, however, and Q. berberidifolia has a glabrate adaxial leaf surface, substantially smaller stellate trichomes with fewer rays on the abaxial leaf surface, heavier tuberculate acorn cups, and blunt or rounded (instead of acute) acorns.
Selected References
None.
