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Quercus rugosa Née  

No occurrences found

Family: Fagaceae
netleaf oak
[Quercus diversicolor Trel., moreQuercus reticulata Bonpl.]
Quercus rugosa image
L.R. Landrum
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Kevin C. Nixon in Flora of North America (vol. 3)
Shrubs or trees , evergreen, usually moderate-sized, rarely large. Bark light or dark brown, scaly. Twigs brown, turning gray with age, 1-2 mm diam., tomentose to tomentulose, variously glabrate or persistently pubescent. Buds brown, ovoid, 2-4 mm, apex obtuse, sparsely pubescent or eventually glabrate. Leaves: petiole to 7 mm. Leaf blade broadly obovate or panduriform to orbiculate or elliptic, rarely narrowly obovate, usually cupped, strongly concave proximally, sometimes planar, to 100 × 70 mm, stiff, leathery, base deeply or shallowly cordate, margins usually somewhat revolute, cartilaginously thickened, undulately crisped or flat with inconspicuous or coarse mucronate teeth near apex, secondary veins 8-10(-12) on each side, branched, apex broadly rounded, rarely subacute; surfaces abaxially dull, glaucous, or densely brownish tomentose, becoming nearly glabrate or pubescence persistent, especially about midribs, secondary veins very prominently raised, reticulate, adaxially dark green, lustrous, sparsely stellate-pubescent especially about base of midrib, secondary veins impressed. Acorns 1-3 or more on slender axillary peduncle 30-60 mm; cup deeply cup-shaped to saucer-shaped, to 9 mm deep × 15 mm wide, enclosing to 1/2 nut, scales loosely appressed, characteristically somewhat spreading, brown, ovate, tuberculate-thickened or only slightly so, tomentose or obscurely tomentulose; nut light brown, ovoid to elliptic, to 20 × l5 mm, glabrous or minutely villous. Cotyledons distinct, often reddish or purple. Flowering early-late spring. Wooded slopes; 2000-2500 m; Ariz., N.Mex., Tex.; Mexico; Central America (Guatemala). Quercus rugosa occurs on wooded slopes at high elevations in trans-Pecos Texas, southern New Mexico, and Arizona, and throughout most of the mesic montane parts of Mexico, south to Guatemala.

JANAS 27(2)
Plant: tree; to 10 m high, the bark light gray, relatively thin, with many longitudinal fissures between narrow plates; young twigs densely yellowish woolly to scarcely pubescent, reddish-brown with lighter lenticels beneath the hairs, the older twigs glabrescent within about 2 years, becoming grayish, remaining more or less smooth Leaves: unlobed, obovate, oblanceolate, or less often elliptic, 2-10 cm long, 1.5-7 cm wide, 1.3-2.5 times as long as wide, densely to scarcely covered with stellate and glandular hairs beneath, persisting about 1 year; stellate hairs of lower leaf surface with 6-11 arms; apex rounded to acute; base cordate to obtuse; petiole 2-5 mm long, usually densely woolly, less often subglabrous; midvein impressed (although often convex) above, prominent below; lateral veins 6-10 pairs, impressed and distinct above, prominent below; secondary veins impressed slightly or flat above, raised below; blade coriaceous, slightly lustrous or dull above, often golden yellow below because of glandular hairs, often concave beneath; margin slightly to strongly revolute, with 3-9, somewhat mucronate teeth INFLORESCENCE: staminate flowers in aments; pistillate flowers solitary or in groups on spikes, these sometimes abbreviated, each pistillate flower with a separate involucre Flowers: mostly wind-pollinated, unisexual, the perianth much reduced or absent; staminate flowers in heads or aments, the perianth greenish, the stamens 3-6; pistillate flowers usually tricarpellate, solitary or in clusters of about 3 or more, subtended individually or in groups by an involucre that develops into a woody cupule enclosing or subtending the mature fruit(s) Fruit: ACORNS 1.5-2 cm long, usually 2-4 on peduncles 1.5-6.3 cm long; cap hemispheric to deep-bowl shaped, 4-10 mm long, 10-16 mm wide, finely appressed yellowish or reddish pubescent to woolly within; scales with thickened bases; nut-shell subglabrous within or with pubescent apex and base Misc: In oak and conifer forests; 1500-2700 m (5000-9000 ft); Apr-Jun (fr. Sep) REFERENCES: Landrum, Leslie R. Fagaceae. 1994. J. Ariz. - Nev. Acad. Sci. Volume 27, 203-214
Landrum 1993, Martin and Hutchins 1980
Common Name: netleaf oak Duration: Perennial Nativity: Native Lifeform: Tree Wetland Status: FAC General: Shrubs and trees to 10 m high, bark light gray, relatively thin, with many longitudinal fissures between plates, young twigs densely yellowish woolly to scarcely pubescent, reddish-brown with lighter lenticels beneath hairs, older twigs glabrescent within about 2 years, becoming grayish. Leaves: Unlobed, obovate, oblanceolate, or elliptic, 2-10 cm long, 1.5-7 cm wide, 1.3-2.5 times as long as wide, densely to scarcely covered with stellate and glandular hairs beneath; persisting about 1 year; apex rounded to acute, base cordate to obtuse, petiole 2-5 mm long; midvein prominent below; leathery, dull green above, golden yellow below, margin slightly revolute, 3-9 teeth. Flowers: Wind pollinated staminate aments, with reduced perianth parts, 3-6 stamens. Fruits: Acorns 1.5-2 cm long, usually 2-4 on peduncles 1.5-6.3 cm long, cap hemispheric to deep-bowl shaped, 4-10 mm long, 10-16 mm wide, finely appressed yellowish or reddish pubescent to woolly within; scales with thickened bases. Ecology: Found in oak and conifer forests, often on wooded slopes from 5,000-9,000 ft (1524-2743 m); flowers April-June. Notes: Distinctive in its thicket-forming habit, with long leaves, often with the mature leaves gaining a golden yellow color beneath the larger leaves. Ethnobotany: Unknown, but other species in the genera have many uses. Etymology: Quercus is the classical Latin word for oak, thought to be derived from Celtic quer, fine, and cuez, tree, while rugosa means wrinkled. Synonyms: Quercus diversicolor, Q. reticulata Editor: SBuckley, 2010
Quercus rugosa
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Quercus rugosa image
Sky Jacobs
Quercus rugosa image
Patrick Alexander
Quercus rugosa image
Patrick Alexander
Quercus rugosa image
Anthony Mendoza
Quercus rugosa image
Anthony Mendoza
Quercus rugosa image
Anthony Mendoza
Quercus rugosa image
Anthony Mendoza
Quercus rugosa image
Ries Lindley
Quercus rugosa image
Ries Lindley
Quercus rugosa image
Ries Lindley
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