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huckleberry oak
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Mexican white oak, net-leaf white oak
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| Shrubs, low spreading to often prostrate, to 1.5 m. Twigs branching at 45° angles or less, reddish brown, 1-1.5 mm diam., flexible, glabrous to sparsely pubesent. |
Trees, subevergreen, to 20 m. Bark gray to brown, scaly. |
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reddish brown, 2-3 mm diam., tomentose, soon glabrate. |
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reddish brown, ovoid, 3-10 mm, apex acute, pubescent or glabrate. |
blade oblong-ovate, 10-35 × 7-15 mm, flat, thin, leathery, base slightly rounded to acute, secondary veins inconspicuous, 6-8 pairs, branching at 45-60° angles, with weakly thickened cell walls, margins entire or indistinctly and irregularly mucronately toothed, apex acute or rarely obtuse; surfaces abaxially whitish green with waxy layer, glabrous or slightly pubescent with stellate hairs, adaxially dull gray-green, glabrous or sparsely pubescent with stellate hairs. |
blade elliptic or ovate or lance-ovate, sometimes obovate, 50-100(-150) × 30-60(-80) mm, base rounded or cordate, margins entire or obscurely or prominently serrate-toothed in distal 1/3 blade, revolute, secondary veins moderately curved, 10-12(-14) on each side, apex rounded, acuminate or retuse, sometimes with prominent drip-tip; surfaces abaxially light green, sometimes rather glaucous, veinlets raised, forming raised reticulum, floccose or tomentose with erect, golden hairs, soon glabrate, adaxially dark or light green, glossy, floccose or tomentose when immature, soon glabrate, secondary and tertiary veins impressed. |
solitary or rarely paired; cup shallowly saucer-shaped to slightly turbinate, 3-4 mm deep × 10-15 mm wide, scales appressed, slightly embedded, moderately silvery brown-pubescent; nut ovoid, 8-17 × 5-10 mm, apex acute; nut scar to 3 mm diam. |
1-2 on peduncle 5-30 mm; cup hemispheric or funnel-shaped, 10-13 mm deep × 12-20 mm wide, including ca. 1/2 nut, scales appressed, thickened basally, gray-canescent; nut light brown, ovoid-ellipsoid or barrel-shaped, 14-20(-25) × 8-13 mm, glabrous. |
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distinct. |
buds conic, 2.5 mm, scales brown with ciliate margins. |
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| Flowering in early summer. |
Flowering in spring. |
| Dry ridges, steep slopes, and rocky areas from montane coniferous zone to near treeline |
Riparian forest gallery, margins of thorn scrub, dry tropical forest, lower margins of oak-pine woodland, and cloud forest |
| 900-2800 m (3000-9200 ft) |
400-2100 m (1300-6900 ft) |
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CA; NV; OR
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TX; Mexico (Chiapas, Hidalgo, Nuevo León, Oaxaca, Tamaulipas, San Luis Potosí, and Veracruz); Central America (Guatemala)
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Typical high-elevation populations in the Sierra Nevada of California can be distinguished from all shrubby forms of Quercus chrysolepis by the absence of glandular trichomes and by thin cups with small nut-attachment scars. At lower elevations in northern California and southwestern Oregon, secondary contact with Q. chrysolepis has resulted in the formation of hybrids. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
This widespread species of Mexico and Central America has only recently been discovered in the United States as a small grove of trees about 30 km from the international border in Texas (B. J. Simpson et al. 1992). Quercus polymorpha is becoming available in the nursery trade in Texas and the southeastern United States. It is distinct from the superficially similar Q. splendens Née (= Q. sororia Liebmann) of western Mexico, with which it is sometimes placed in synonymy, in that Q. splendens has connate cotyledons instead of distinct cotyledons, as in Q. polymorpha. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
| FNA vol. 3. |
FNA vol. 3. |
| Fagaceae > Quercus > sect. Protobalanus |
Fagaceae > Quercus > sect. Quercus |
Q. acerifolia, Q. agrifolia, Q. ajoensis, Q. alba, Q. arizonica, Q. arkansana, Q. austrina, Q. berberidifolia, Q. bicolor, Q. boyntonii, Q. buckleyi, Q. carmenensis, Q. chapmanii, Q. chihuahuensis, Q. chrysolepis, Q. coccinea, Q. cornelius-mulleri, Q. depressipes, Q. douglasii, Q. dumosa, Q. durata, Q. ellipsoidalis, Q. emoryi, Q. engelmannii, Q. falcata, Q. fusiformis, Q. gambelii, Q. garryana, Q. geminata, Q. georgiana, Q. graciliformis, Q. gravesii, Q. grisea, Q. havardii, Q. hemisphaerica, Q. hinckleyi, Q. hypoleucoides, Q. ilicifolia, Q. imbricaria, Q. incana, Q. inopina, Q. intricata, Q. john-tuckeri, Q. kelloggii, Q. laceyi, Q. laevis, Q. laurifolia, Q. lobata, Q. lyrata, Q. macrocarpa, Q. margarettae, Q. marilandica, Q. michauxii, Q. minima, Q. mohriana, Q. montana, Q. muehlenbergii, Q. myrtifolia, Q. nigra, Q. oblongifolia, Q. oglethorpensis, Q. pacifica, Q. pagoda, Q. palmeri, Q. palustris, Q. phellos, Q. polymorpha, Q. prinoides, Q. pumila, Q. pungens, Q. robur, Q. robusta, Q. rubra, Q. rugosa, Q. sadleriana, Q. shumardii, Q. similis, Q. sinuata, Q. stellata, Q. tardifolia, Q. texana, Q. tomentella, Q. toumeyi, Q. turbinella, Q. vaseyana, Q. velutina, Q. viminea, Q. virginiana, Q. wislizenii |
Q. acerifolia, Q. agrifolia, Q. ajoensis, Q. alba, Q. arizonica, Q. arkansana, Q. austrina, Q. berberidifolia, Q. bicolor, Q. boyntonii, Q. buckleyi, Q. carmenensis, Q. chapmanii, Q. chihuahuensis, Q. chrysolepis, Q. coccinea, Q. cornelius-mulleri, Q. depressipes, Q. douglasii, Q. dumosa, Q. durata, Q. ellipsoidalis, Q. emoryi, Q. engelmannii, Q. falcata, Q. fusiformis, Q. gambelii, Q. garryana, Q. geminata, Q. georgiana, Q. graciliformis, Q. gravesii, Q. grisea, Q. havardii, Q. hemisphaerica, Q. hinckleyi, Q. hypoleucoides, Q. ilicifolia, Q. imbricaria, Q. incana, Q. inopina, Q. intricata, Q. john-tuckeri, Q. kelloggii, Q. laceyi, Q. laevis, Q. laurifolia, Q. lobata, Q. lyrata, Q. macrocarpa, Q. margarettae, Q. marilandica, Q. michauxii, Q. minima, Q. mohriana, Q. montana, Q. muehlenbergii, Q. myrtifolia, Q. nigra, Q. oblongifolia, Q. oglethorpensis, Q. pacifica, Q. pagoda, Q. palmeri, Q. palustris, Q. phellos, Q. prinoides, Q. pumila, Q. pungens, Q. robur, Q. robusta, Q. rubra, Q. rugosa, Q. sadleriana, Q. shumardii, Q. similis, Q. sinuata, Q. stellata, Q. tardifolia, Q. texana, Q. tomentella, Q. toumeyi, Q. turbinella, Q. vacciniifolia, Q. vaseyana, Q. velutina, Q. viminea, Q. virginiana, Q. wislizenii |
| Hittell: Resources Calif. 101. (1863) — (as vaccinifolia) |
Schlechtendal & Chamisso: Linnaea 5: 78. (1830) |
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CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
