? Engelmann Oak
Scientific classification
Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Fagales Family: Fagaceae Genus: Quercus Species: Q. engelmannii
Binomial name
Quercus engelmannii Greene

The Engelmann Oak (Quercus engelmannii), also called the Pasadena Oak, is a species of oak in the white oak section Quercus sect. Quercus, native to Southern California and northwestern Baja California, Mexico. It is a small tree growing to 10 m tall, generally evergreen, but may be drought-deciduous during the hot, dry local summers, and has a rounded or elliptical canopy. The bark is thick, furrowed, and light gray-brown. The leaves are leathery, 3-6 cm long and 1-2 cm broad, of a blue-green color, and may be flat or wavy, with smooth margins. The flowers are catkins; the fruit is an acorn 1.5-2.5 cm long, maturing 6-8 months after pollination. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Divisions Green algae Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants Adiantum pedatum... Classes Magnoliopsida- Dicots Liliopsida- Monocots The flowering plants (also called angiosperms) are a major group of land plants. ... Orders see text Dicotyledons or dicots are flowering plants whose seed contains two embryonic leaves or cotyledons. ... Families included in the Kew list: Fagaceae - Beech family   (including Nothofagaceae) Betulaceae - Birch family Corylaceae - Hazel family Ticodendraceae not included in the Kew list: Casuarinaceae - She-oak family Juglandaceae - Walnut family Rhoipteleaceae Myricaceae The Fagales are an order of flowering plants, including some of the best known trees. ... Genera Castanea - Chestnuts Castanopsis Chrysolepis - Golden chinkapin Colombobalanus Fagus - Beeches Formanodendron Lithocarpus - Stone oaks Nothofagus - Southern beeches Quercus - Oaks Trigonobalanus The family Fagaceae, or beech family, is characterized by alternate leaves with pinnate venation, flowers in the form of catkins, and fruit in the form of nuts, one to seven... This article is about oaks (Quercus desert-oak is unrelated, and instead belongs to the genus Allocasuarina. ... In biology, binomial nomenclature is the formal method of naming species. ... ergionadfghadf hadfshlmkdn;bnfdij dfpgj df dfiogdflkgmdfgdfn fjknfgkf,ggfier mf fjdfgmkdf df dfskj;gnsdfopgksra sdfgnjsdfg Greene County, Virginia Greene is also the family name of several famous people: Brian Greene, American physicist Charles Greene, American sprinter. ... In biology, a species is the basic unit of biodiversity. ... Species See List of Quercus species The term oak can be used as part of the common name of any of several hundred species of trees and shrubs in the genus Quercus, and some related genera, notably Cyclobalanopsis and Lithocarpus. ... // Genus Quercus Section Quercus The white oaks (synonym sect. ... Southern California Downtown Los Angeles Skyline Southern California, sometimes abbreviated SoCal or colloquially, the Southland, is an informal name for the megalopolis and nearby desert that occupies the southern-most quarter of the state of California. ... Baja California is the northernmost state of Mexico. ... The coniferous Coast Redwood, the tallest tree species on earth. ... A Silver Fir shoot showing three successive years of retained leaves In botany, an evergreen plant is a plant which retains its leaves year-round, with each leaf persisting for more than 12 months. ... Deciduous means temporary or tending to fall off (deriving from the Latin word decidere, to fall off). ... In botany, a leaf is an above-ground plant organ specialized for photosynthesis. ... Clivia miniata bears bright orange flowers. ... A male catkin on a willow Male catkins on a Common Hazel in January before opening Catkins, or aments, are slim, cylindrical flower clusters, wind-pollinated and without petals, that can be found in many plant families, including Betulaceae, Fagaceae, Moraceae, and Salicaceae. ... It has been suggested that this article or section be merged with List of fruits. ... Acorns of Sessile Oak The acorn is the fruit of oaks (genera Quercus, Lithocarpus and Cyclobalanopsis, in the family Fagaceae). ...

Engelmann Oak ranges from the foothills of the San Gabriel Mountains in eastern Los Angeles County through the Santa Ana Mountains of Orange County and the western foothills and mesas of the Peninsular Ranges in Riverside and San Diego counties, extending into the Sierra Juárez and Sierra San Pedro Mártir ranges of northern Baja California. They are generally found in savannas and woodlands above the dry coastal plain, but below the 1300 meters (4200 feet) elevation where colder winters prevail. The Engelmann Oak has a smaller range than most California oaks, and suburban sprawl in the San Gabriel Valley has eliminated the oaks from most of the northern part of the range. The largest remaining stands of Engelmann Oaks are on the Santa Rosa Plateau, near Murrieta in Riverside County, and on Black Mountain near Ramona in San Diego County. San Gabriel Mountains The San Gabriel Mountains are located in northern Los Angeles County and western San Bernardino County, California, USA. The mountain range forms a barrier between the Greater Los Angeles Area and the Mojave Desert. ... Map of California showing Los Angeles County. ... Santa Ana Mountains The Santa Ana Mountains are short peninsular mountain range along the coast of southern California in the United States. ... Orange County is the name of several counties in the United States of America: Orange County, California: probably named for the city of Orange, California, which in turn may have been named after the orange groves that used to exist there. ... The Peninsular Ranges are a group of mountain ranges which stretch 900 miles from southern California to the southern tip of Baja California, part of the North American Coast Ranges that run along the Pacific coast from Alaska to Mexico. ... Riverside County is a county located in the southeastern part of the U.S. state of California, stretching from Orange County to the Colorado River, which is the border with Arizona. ... San Diego County is a county located on the Pacific Ocean in the far southwest of California, along the border with Mexico. ... The Sierra Juárez is a mountain range on the Baja California Peninsula, in northern Mexico. ... The Sierra San Pedro Martir is a mountain chain that runs north-south along the northern part of Baja California in northwest Mexico. ... Savanna is a grassland dotted with trees, and occurs in several types of biomes. ... Limber Pine woodland, Toiyabe Range, central Nevada Biologically, a woodland is differentiated from a forest. ... In geography, a coastal plain is an area of flat, low-lying land adjacent to a seacoast and separated from the interior by other features. ... Urban sprawl (also called suburban sprawl and Los Angelization) describes the growth of a metropolitan area, particularly the suburbs, over a large area. ... The San Gabriel Valley is one of the principal valleys of southern California. ... Murrieta is a city located in Riverside County, California. ... Ramona is an unincorporated town located in San Diego County, California, USA. As of the 2000 census, the census-designated place had a total population of 15,691. ...

Fossil evidence shows that Engelmann Oaks once had a wider range, extending through what is now the Mojave and Sonoran deserts into eastern California and Arizona. The Engelmann Oak is most closely related to the Arizona White Oak (Q. arizonica) and Mexican Blue Oak (Q. oblongifolia), which are native to the subtropical pine-oak woodlands of Arizona and northern Mexico. The Engelmann Oak is considered to be the northernmost species of subtropical oak, which was later isolated from its closest relatives to the east by the drying of the southwestern deserts. Mojave Desert The Mojave Desert (Mojave is used for the desert while Mohave is used for the native people) occupies a significant portion of southern California and smaller parts of southwestern Utah, southern Nevada, and northwestern Arizona, in the United States. ... Sonoran Desert wildlife Mountains in the Sonoran Desert The Sonoran Desert (sometimes also called Gila Desert after Gila River) is a North American desert which straddles part of the U.S.-Mexico border and covers large parts of the U.S. states of Arizona and California and the Mexican state... Official language(s) English Capital Phoenix Largest city Phoenix Area  - Total  - Width  - Length  - % water  - Latitude  - Longitude Ranked 6th 295,254 km² 500 km 645 km 0. ... The Madrean pine-oak woodlands are subtropical woodlands found in the mountains of Mexico and the southwestern United States. ...

The wood is dark brown and strong, but tends to warp and split upon drying, and is of low value as timber.

External links

• Flora of North America: Quercus engelmannii