76-520: Pinus flexilis , the limber pine , is a species of pine tree in the family Pinaceae that occurs in the mountains of the Western United States , Mexico , and Canada . It is also called Rocky Mountain white pine . A limber pine in Eagle Cap Wilderness , Oregon , has been documented as over 2,000 years old, and another one was confirmed at 1,140 years old. Another candidate for
152-725: A financial and cultural center. Substantial tensions during this era included nativist sentiments (primarily against Chinese immigrants), tensions between the increasing power of the Southern Pacific Railroad and small farmers, and the beginnings of the labor union movement. Northern California's economy is noted for being the de facto world leader in high-tech industry ( software , semiconductor /micro-electronics, biotechnology and medical devices /instruments), as well as being known for clean power , biomedical, government, and finance. Other significant industries include tourism, shipping, manufacturing, and agriculture. Its economy
228-554: A fungus that was introduced accidentally from Europe. Limber pine mortality is high in many areas throughout its range, except Arizona , where it has not yet been found. However, there is little hope of controlling the blister rust in existing trees. Research is under way, locating and breeding from the occasional naturally resistant limber pines, and by studying the resistance mechanisms of the European and Asian white pines (e.g. Swiss pine , Macedonian pine ), which are strongly resistant to
304-474: A major trading post just north of today's Portland, Oregon . British fur trappers and hunters then used the Siskiyou Trail to travel throughout northern California. The leader of a further French scientific expedition to northern California, Eugene Duflot de Mofras , wrote in 1840 " ...it is evident that California will belong to whatever nation chooses to send there a man-of-war and two hundred men ." By
380-564: A means to evaluate soil fertility and vigour of the trees. The bark of most pines is thick and scaly, but some species have thin, flaky bark. The branches are produced in "pseudo whorls", actually a very tight spiral but appearing like a ring of branches arising from the same point. Many pines are uninodal, producing just one such whorl of branches each year, from buds at the tip of the year's new shoot , but others are multinodal, producing two or more whorls of branches per year. Pines have four types of leaf : Pines are monoecious , having
456-625: A part of the Bay Area, in recent years the Bay Area has drawn more commuters from as far as Central Valley cities such as Sacramento , Stockton , Fresno , Turlock and Modesto . These cities in the central part of the Central Valley and Sierra Nevada foothills may be viewed as part of a single megalopolis . The 2010 U.S. Census showed that the Bay Area grew at a faster rate than the Greater Los Angeles Area while Greater Sacramento had
532-769: A revolt and seized the small Mexican garrison in Sonoma. They raised the " Bear Flag " of the California Republic over Sonoma. The "Bear Flag Republic" lasted only 26 days, until the U.S. Army, led by John Frémont , took over on July 9. The California state flag today is based on this original Bear Flag, and continues to contain the words "California Republic." Commodore John Drake Sloat ordered his naval forces to occupy Yerba Buena (present San Francisco ) on July 7 and within days American forces controlled San Francisco, Sonoma, and Sutter's Fort in Sacramento. The treaty ending
608-514: A windbreak tree or an ornamental tree due to its drought tolerance. It is also grown as a Christmas tree , liked for the soft needles but with stiffer branches than an Eastern white pine . The large seeds are edible, and were reportedly consumed by Native Americans in Montana. Pine See List of Pinus species for complete taxonomy to species level. See list of pines by region for list of species by geographic distribution . A pine
684-516: Is a geographic and cultural region that comprises the northern portion of the U.S. state of California , spanning the northernmost 48 of the state's 58 counties . Northern California in its largest definition is determined by dividing the state into two regions, the other being Southern California . The main northern population centers include the San Francisco Bay Area (anchored by the cities of San Jose , San Francisco , and Oakland ),
760-590: Is also home to one of the largest Air Force Bases on the West Coast, and the largest in California by square meters, Travis Air Force Base . Northern California's largest metropolitan area is the San Francisco Bay Area which consists of 9 counties: Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, and Sonoma counties. The Bay Area consists of the major cities of San Jose , San Francisco , Oakland , and their many suburbs . Although not
836-530: Is any conifer tree or shrub in the genus Pinus ( / ˈ p aɪ n ə s / ) of the family Pinaceae . Pinus is the sole genus in the subfamily Pinoideae . World Flora Online accepts 187 species names of pines as current, with additional synonyms, making it the largest family among the conifers. The American Conifer Society (ACS) and the Royal Horticultural Society accept 121 species. The highest species diversity of pines
SECTION 10
#1732886487650912-566: Is diverse, though more concentrated in high technology. It is home to the state capital, as well as several Western United States regional offices in San Francisco, such as the Federal Reserve and 9th Circuit Court . Northern California has a warm or mild to cool climate, in which the Sierra mountains gets snow in the late fall through winter and occasionally into spring. Summers are mild along
988-777: Is found in Mexico. Pines are widely distributed in the Northern Hemisphere ; they occupy large areas of boreal forest , but are found in many habitats, including the Mediterranean Basin . The timber from pine trees is called "pine"; it is one of the most extensively used types of timber. There are currently 818 named cultivars (or trinomials ) recognized by the ACS. It is a well-known type of Christmas tree . Pine trees are evergreen , coniferous resinous trees (or, rarely, shrubs ) growing 3–80 metres (10–260 feet) tall, with
1064-515: Is lightweight and soft. Pinus flexilis is typically a high-elevation pine, often marking the tree line either on its own, or with whitebark pine ( Pinus albicaulis ), either of the bristlecone pines , or lodgepole pine ( Pinus contorta ). In favorable conditions, it makes a tree to 20 metres (65 feet), rarely 25 m (80 ft) tall. On exposed tree line sites, mature trees are much smaller, reaching heights of only 5–10 m (15–35 ft). In steeply-sloping, rocky, and windswept terrain in
1140-449: Is now restricted to fir ( Abies ) and Douglas-fir ( Pseudotsuga ). Pines are gymnosperms . The genus is divided into two subgenera based on the number of fibrovascular bundles in the needle. The subgenera can be distinguished by cone, seed, and leaf characters: Phylogenetic evidence indicates that both subgenera have a very ancient divergence from one another. Each subgenus is further divided into sections and subsections. Many of
1216-434: Is often considered as having an additional division north of the urban areas of the San Francisco Bay Area and Sacramento metropolitan areas. Extreme northern residents have felt under-represented in state government and, in 1941, attempted to form a new state with southwestern Oregon to be called Jefferson , or more recently to introduce legislation to split California into two or three states . The coastal area north of
1292-785: Is one of the world's oldest living organisms at around 4,800 years old. This tree can be found in the White Mountains of California. An older tree, now cut down, was dated at 4,900 years old. It was discovered in a grove beneath Wheeler Peak and it is now known as " Prometheus " after the Greek immortal . The spiral growth of branches, needles, and cones scales are arranged in Fibonacci number ratios. The new spring shoots are sometimes called "candles"; they are covered in brown or whitish bud scales and point upward at first, then later turn green and spread outward. These "candles" offer foresters
1368-629: Is the largest genus of the Pinaceae , the pine family, which first appeared in the Jurassic period. Based on recent Transcriptome analysis, Pinus is most closely related to the genus Cathaya , which in turn is closely related to spruces . These genera, with firs and larches , form the pinoid clade of the Pinaceae. Pines first appeared during the Early Cretaceous, with the oldest verified fossil of
1444-598: The California state quarter . Other prominent parks are the Kings Canyon - Sequoia National Park complex, Redwood National Park , Pinnacles National Park , Lassen Volcanic National Park and the largest in the contiguous forty-eight states, Death Valley National Park . Other areas under federal protection include Muir Woods National Monument , Giant Sequoia National Monument , Devils Postpile National Monument , Lava Beds National Monument , Point Reyes National Seashore ,
1520-661: The Central Valley , one of the world's most productive agricultural regions. Northern California is also home to Silicon Valley , the global headquarters for some of the most powerful tech and Internet-related companies in the world, including Meta , Apple , Google , and Nvidia . The Northern California Megaregion , one of the 11 megaregions of the United States is centered in Northern California, and extends from Metropolitan Fresno north to Greater Sacramento, and from
1596-464: The Cold War –era expansion of the defense industry. Since the 2000 U.S. Census, Northern California has grown at a faster rate than Southern California due to the strong economic performances of the Bay Area and Sacramento. The U.S. National Park System controls a large and diverse group of parks in northern California. The best known is Yosemite National Park , which is displayed on the reverse side of
SECTION 20
#17328864876501672-856: The Greater Sacramento area (anchored by the state capital Sacramento ), the Redding, California , area south of the Cascade Range , and the Metropolitan Fresno area (anchored by the city of Fresno ). Northern California also contains redwood forests, along with most of the Sierra Nevada , including Yosemite Valley and part of Lake Tahoe , Mount Shasta (the second-highest peak in the Cascade Range after Mount Rainier in Washington ), and most of
1748-812: The Missouri Compromise . But instead, the passing of the Compromise of 1850 enabled California to be admitted to the Union as a free state . The decades following the Gold Rush brought dramatic expansion to northern California, both in population and economically – particularly in agriculture. The completion of the First transcontinental railroad in 1869, with its terminus in Sacramento (and then later, Oakland), meant that northern California's agricultural produce (and some manufactured goods) could now be shipped economically to
1824-731: The Monterey Bay National Marine Sanctuary , and the Cordell Bank and Gulf of the Farallones National Marine Sanctuaries (both off the coast of San Francisco). Included within the latter National Marine Sanctuary is the Farallon National Wildlife Refuge ; this National Wildlife Refuge is one of approximately twenty-five such refuges in northern California. National forests occupy large sections of northern California, including
1900-735: The Rosie the Riveter World War II Home Front National Historical Park in Richmond , and the Tule Lake National Monument outside of Tulelake . Northern California hosts a number of world-renowned universities including Stanford University and University of California, Berkeley . Top-tier public graduate schools include Boalt Hall and Hastings law schools and UC San Francisco (a top-ranked medical school) and UC Davis School of Veterinary Medicine ,
1976-710: The Shasta tribe in the north, to the Miwoks in the central coast and Sierra Nevada, to the Yokuts of the southern Central Valley, northern California was among the most densely populated areas of pre-Columbian North America. The first European to explore the coast was Juan Rodríguez Cabrillo , sailing for the Spanish Crown; in 1542, Cabrillo's expedition sailed perhaps as far north as the Rogue River in today's Oregon . Beginning in 1565,
2052-622: The Shasta–Trinity , Klamath , Modoc , Lassen , Mendocino , Eldorado , Tahoe , and Sequoia national forests, among others. Included within (or adjacent to) national forests are federally protected wilderness areas, including the Trinity Alps , Castle Crags , Granite Chief , and Desolation wilderness areas. In addition, the California Coastal National Monument protects all islets, reefs, and rock outcroppings from
2128-546: The Siskiyou Trail from missions in northern California to British and American settlements in Oregon . Although a small number of American traders and trappers had lived in northern California since the early 1830s, the first organized overland party of American immigrants to arrive in northern California was the Bartleson-Bidwell Party of 1841 via the new California Trail . Also in 1841, an overland exploratory party of
2204-575: The Spanish mission at Monterey was the first European settlement in the area, followed by other missions along the coast—eventually extending as far north as Sonoma County . Northern California is not a formal geographic designation. Historically, the state was divided by the Tehachapi Mountains which was a barrier to travelers before highways were built, and remains a bioregion barrier. This geographical barrier curves from Point Conception at
2280-525: The Summer of Love , winemaking , the cradle of the international environmental movement, and the open, casual workplace first popularized in the Silicon Valley dot-com boom and now widely in use around the world. Other examples of innovation across diverse fields range from Genentech (development and commercialization of genetic engineering) to CrossFit as a pioneer in extreme human fitness and training. It
2356-760: The Transverse Ranges in Southern California . Continuing south the species is found in the San Jacinto Mountains , Santa Rosa Mountains , and Hot Springs Mountain of the Peninsular Ranges . There are small disjunct populations in eastern Oregon , in western North Dakota and Nebraska , and in the Black Hills of South Dakota . It is found at a wide range of altitudes depending on the latitude, from 850 to 3,810 m (2,790 to 12,500 ft). In
Pinus flexilis - Misplaced Pages Continue
2432-654: The United States Exploring Expedition came down the Siskiyou Trail from the Pacific Northwest. In 1846, the Donner Party earned notoriety as they struggled to enter northern California. When the Mexican–American War was declared on May 13, 1846, it took almost two months (mid-July 1846) for word to get to California. On June 14, 1846, some 30 non-Mexican settlers, mostly Americans, staged
2508-414: The 1830s, a significant number of non- Californios had immigrated to northern California. Chief among these was John Sutter , a European immigrant from Switzerland , who was granted 48,827 acres (197.60 km ) centered on the area of today's Sacramento . American trappers began entering northern California in the 1830s. In 1834, American visionary Ewing Young led a herd of horses and mules over
2584-506: The Bay Area east across the Nevada state line to encompass the entire Lake Tahoe – Reno area. Evidence of Native American habitation in the area dates from at least 19,000 years ago and successive waves of arrivals led to one of the most densely populated areas of pre-Columbian North America. The arrival of European explorers from the early 16th to the mid-18th centuries did not establish European settlements in northern California. In 1770,
2660-540: The Bay Area is often referred to as the North Coast , touching the counties of Mendocino , Lake , Humboldt , and Del Norte . The interior region north of Sacramento metropolitan area is referred to by locals as the Northstate , consisting of about 20 counties. "Northern California" was used by Tim Draper as the name of the northernmost state to be created by splitting California into three new states. The bill, Cal 3 ,
2736-422: The Central Valley, as well as Fresno and Visalia on the southern end. Though smaller in each case, with the notable exception of Fresno , than the larger cities of the general region, these smaller regional centers are often of historical and economic importance for their respective size, due to their locations, which are primarily rural or otherwise isolated. Inhabited for millennia by Native Americans , from
2812-444: The Gold Rush era (52%) came during the 1940s, as the region was the destination of many post-War veterans and their families, attracted by the greatly expanding industrial base and (often) by their time stationed in northern California during World War II . The largest absolute increase occurred during the 1980s (over 2.1 million person increase), attracted by job opportunities in part by the expansion taking place in Silicon Valley and
2888-644: The Indo-European base *pīt- ‘resin’ (source of English pituitary ). Before the 19th century, pines were often referred to as firs (from Old Norse fura , by way of Middle English firre ). In some European languages, Germanic cognates of the Old Norse name are still in use for pines — in Danish fyr , in Norwegian fura/fure/furu , Swedish fura/furu , Dutch vuren , and German Föhre — but in modern English, fir
2964-574: The Mexican–American War was signed on February 2, 1848, and Mexico formally ceded Alta California (including all of present-day northern California) to the United States. The California Gold Rush took place almost exclusively in northern California from 1848 to 1855. It began on January 24, 1848, when gold was discovered at Sutter's Mill in Coloma . News of the discovery soon spread, resulting in some 300,000 people coming to California from
3040-518: The Pacific Ocean eastward through Mount Pinos , Tejon Pass and Tehachapi Pass , then cuts northward through the Sierra Nevada mountain range to Mount Patterson and the Nevada border. The Mojave Desert and the Great Basin Desert are separated from Northern California by mountain ranges in this definition of bioregions. California's north–south midway division is around 37°N , near
3116-510: The Rocky Mountains of southern Alberta, limber pine is even more stunted, occurring in old stands where mature trees are consistently less than 3 m (10 ft) in height. One of the world's oldest living limber pine trees grows on the banks of the upper North Saskatchewan River at Whirlpool Point in Alberta. Recent measurements give a maximum girth of 185". In 1986, a core sample 10 cm
Pinus flexilis - Misplaced Pages Continue
3192-459: The Russian state-sponsored Russian-American Company established Fort Ross , a fur trading outpost on the coast of today's Sonoma County . Fort Ross was the southernmost Russian settlement, located some 60 miles (97 km) north of Spanish colonies in San Francisco. In 1839, the settlement was abandoned due to its inability to meet resource demands, and the increasing Mexican and American presence in
3268-645: The Spanish Manila galleons crossed the Pacific Ocean from Mexico to the Spanish Philippines , with silver and gemstones from Mexico. The Manila galleons returned across the northern Pacific, and reached North America usually off the coast of northern California, and then continued south with their Asian trade goods to Mexico. In 1579, northern California was visited by the English explorer Sir Francis Drake who landed north of today's San Francisco and claimed
3344-482: The area for England. In 1602, the Spaniard Sebastián Vizcaíno explored California's coast as far north as Monterey Bay , where he went ashore. Other Spanish explorers sailed along the coast of northern California for the next 150 years, but no settlements were established. The first European inhabitants were Spanish missionaries, who built missions along the California coast. The mission at Monterey
3420-416: The bristlecone pines, which share five needles per fascicle but have a semi-persistent sheath. Distinguishing limber pine from the related whitebark pine ( P. albicaulis ), also a white pine, is very much more difficult, and can only easily be done by the cones. In limber pine, the cones are 6–15 cm ( 2 + 1 ⁄ 4 –6 in) long where the species overlap, green when immature, and open to release
3496-520: The coast and generally warm and dry, while winters are cool and usually wet. The high temperatures range from 50s °F (10–15 °C) to 30s °F (−1 – +4 °C) in the winters while summers temperature range is 90s °F (32–37 °C) to 60s °F (15–20 °C) or 50s °F (10–15 °C), with highs well into the 100s °F (37–42 °C) for the Sacramento region. Snow covers the mountains (generally above 3,000 feet (910 m)) in mid January through February. Fog occurs infrequently or occurs normally in
3572-452: The coasts. The Gold Rush also had negative effects: American colonists chose to use genocide as a tool to remove the Indigenous people so that they could look for gold on their land. The Gold Rush also increased pressure to make California a U.S. state . Pro-slavery politicians initially attempted to permanently divide northern and southern California at 36 degrees, 30 minutes, the line of
3648-481: The development of world-famous and online business models (such as Apple , Hewlett-Packard , Google , Yahoo! , and eBay ), northern California has been at the forefront of new ways of doing business. In science, advances range from being the first to isolate and name fourteen transuranic chemical elements , to breakthroughs in microchip technology. Cultural contributions include the works of Ansel Adams , George Lucas , and Clint Eastwood , as well as beatniks ,
3724-406: The disease. The tree has also been damaged by bark beetle epidemics, particularly at drought-affected low elevations. The popular cultivar P. flexilis 'Vanderwolf's Pyramid' is widely available as an ornamental tree for gardens . 'Vanderwolf's Pyramid' derives from P. reflexa , though it is usually listed in nursery catalogs under P. flexilis . The Southwestern white pine is popular as
3800-556: The forest itself. Pinus flexilis is an important source of food for several species, including red squirrels and Clark's nutcrackers , the latter being an important distributor of seeds. There is evidence that limber pines co-evolved with Clark's nutcrackers, which are the primary dispersers of the seeds. In a relic, low elevation population, seeds are also dispersed by small rodents. American black bears and grizzly bears may raid squirrel caches for limber pine nuts. Squirrels, Northern flickers , and mountain bluebirds often nest in
3876-550: The genus being Pinus yorkshirensis from the Hauterivian - Barremian boundary (~130-125 million years ago) from the Speeton Clay , England. The evolutionary history of the genus Pinus has been complicated by hybridization . Pines are prone to inter-specific breeding. Wind pollination, long life spans, overlapping generations, large population size, and weak reproductive isolation make breeding across species more likely. As
SECTION 50
#17328864876503952-401: The largest growth rate of any metropolitan area in California. The state's larger inland cities are considered part of Northern California in cases when the state is divided into two parts. Key cities in the region which are not in major metropolitan areas include Eureka on the far North Coast , Redding , at the northern end of the Central Valley, Chico , and Yuba City in the mid-north of
4028-561: The largest veterinary school in the United States. (Partial list) (Partial list) The following regions are entirely or partly within northern California: Northern California is home to three of the state's four extended metropolitan areas , which are home to over three-fourths of the region's population as of the 2010 United States Census : The following are major central business districts: See also articles: See also categories: There are 11 airports in Northern California categorized as Primary Service Commercial airports by
4104-399: The level of Morgan Hill and Chowchilla . (The geographic center of California is at 37°09′58″N 119°26′58″W / 37.16611°N 119.44944°W / 37.16611; -119.44944 near North Fork , northeast of Fresno. ) Popularly, though, "Northern California" usually refers to the state's northernmost 48 counties. Because of California's large size and diverse geography,
4180-453: The majority of species reaching 15–45 m (50–150 ft) tall. The smallest are Siberian dwarf pine and Potosi pinyon , and the tallest is an 83.45 m (273.8 ft) tall sugar pine located in Yosemite National Park . Pines are long lived and typically reach ages of 100–1,000 years, some even more. The longest-lived is the Great Basin bristlecone pine ( P. longaeva ). One individual of this species, dubbed " Methuselah ",
4256-507: The male and female cones on the same tree. The male cones are small, typically 1–5 cm long, and only present for a short period (usually in spring, though autumn in a few pines), falling as soon as they have shed their pollen . The female cones take 1.5–3 years (depending on species) to mature after pollination , with actual fertilization delayed one year. At maturity the female cones are 3–60 cm long. Each cone has numerous spirally arranged scales, with two seeds on each fertile scale;
4332-481: The northern California coast by Spain. By 1820, Spanish influence extended inland approximately 25 to 50 miles (80 km) from the missions. Outside of this zone, perhaps 200,000 to 250,000 Native Americans continued to lead traditional lives. The Adams-Onís Treaty , signed in 1819 between Spain and the young United States, set the northern boundary of the Spanish claims at the 42nd parallel, effectively creating today's northern boundary of northern California. In 1812,
4408-464: The northern Rockies and the Sierra Nevada east slope. The most useful clue here is that limber pine needles are entire (smooth when rubbed gently in both directions), whereas Western white pine needles are finely serrated (feeling rough when rubbed gently from tip to base). Limber pine needles are also usually shorter, 4–7 cm ( 1 + 1 ⁄ 2 – 2 + 3 ⁄ 4 in) long, while western white pine needles are 5–10 cm (2–4 in), though
4484-414: The northern half of its range, it grows in the montane zone near the lower tree line ; in the middle of its range between the 45th and 40th parallels , it grows on windswept sites in the montane and subalpine zones ; and in the southern part of its range, it grows mainly at high elevations in the subalpine zone near the upper tree line. It can more often be found at the outer fringes of a forest than in
4560-426: The oldest limber pine was identified in 2006 near the Alta Ski Area in Utah; called "Twister", the tree was confirmed to be at least 1,700 years old and thought to be even older. Its pliant branches gives it the common name "limber" and specific epithet flexilis . Its needles are about 8 centimeters ( 3 + 1 ⁄ 4 in) long and a dark, blueish green. Its bark is heavily creased and dark grey. Its pale wood
4636-817: The pines have diversified, gene transfer between different species has created a complex history of genetic relatedness. P. nelsonii P. aristata P. balfouriana P. longaeva P. pinceana P. maximartinezii P. rzedowskii P. quadrifolia P. monophylla P. culminicola P. discolor P. remota P. edulis P. cembroides P. bungeana P. squamata P. gerardiana P. krempfii P. peuce P. lambertiana P. strobus P. chiapensis P. monticola P. flexilis P. strobiformis P. ayacahuite P. albicaulis P. koraiensis P. sibirica P. cembra P. parviflora P. wallichiana Northern California Northern California (commonly shortened to NorCal )
SECTION 60
#17328864876504712-447: The ranges overlap. The largest part of the limber pine's range is in the Rocky Mountains , from southwest Alberta and southeastern British Columbia south through Colorado and New Mexico into the northern states of Mexico . It is also found through the Great Basin states of Nevada and Utah , in the eastern Sierra Nevada and White Mountains of Northern California , and in the San Bernardino and San Gabriel Mountains of
4788-400: The region. After Mexico gained independence from Spain in 1821, Mexico continued Spain's missions and settlements in northern California as well as Spain's territorial claims. The Mexican Californios (Spanish-speaking Californians) in these settlements primarily traded cattle hides and tallow with American and European merchant vessels. In 1825, the Hudson's Bay Company established
4864-422: The rest of the United States and abroad. San Francisco grew from a tiny hamlet, home to about 1,000 Californios into a boomtown of over 50,000 people in the 12 years between 1848 and 1860. New roads, churches, and schools were built, and new towns sprung up, aided in part by the development of new methods of transportation such as steamships which came into regular service and railroads which now connected
4940-429: The rest of the United States. In return, immigrants from the rest of the United States (and Europe) could comfortably come to northern California. A network of railroads spread throughout northern California, and in 1887, a rail link was completed to the Pacific Northwest . Almost all of these railways came under the control of the Southern Pacific Railroad , headquartered in San Francisco, and San Francisco continued as
5016-453: The scales at the base and tip of the cone are small and sterile, without seeds. The seeds are mostly small and winged, and are anemophilous (wind-dispersed), but some are larger and have only a vestigial wing, and are bird -dispersed. Female cones are woody and sometimes armed to protect developing seeds from foragers. At maturity, the cones usually open to release the seeds. In some of the bird-dispersed species, for example whitebark pine ,
5092-469: The seeds are only released by the bird breaking the cones open. In others, the seeds are stored in closed cones for many years until an environmental cue triggers the cones to open, releasing the seeds. This is called serotiny . The most common form of serotiny is pyriscence, in which a resin binds the cones shut until melted by a forest fire, for example in P. rigida . The modern English name "pine" derives from Latin pinus , which some have traced to
5168-524: The seeds; the scales are not fragile. In whitebark pine, the cones are 4–7 cm ( 1 + 1 ⁄ 2 – 2 + 3 ⁄ 4 in) long, dark purple when immature, and do not open on drying, but are fragile and are pulled apart by birds to release the seeds. A useful clue is that whitebark pines almost never have intact old cones lying under them, whereas limber pines usually do. In the absence of cones, limber pine can also be hard to tell from Western white pine ( P. monticola ) where they occur together in
5244-446: The shore of northern California out to a distance of 12 nmi (22 km), along the entire northern California coastline. In addition, the National Park Service administers protected areas on Alcatraz Island , the Golden Gate National Recreation Area , Whiskeytown–Shasta–Trinity National Recreation Area , and the Smith River National Recreation Area . The NPS also administers the Manzanar National Historic Site in Inyo County ,
5320-422: The smaller groups of Pinus are composed of closely related species with recent divergence and history of hybridization. This results in low morphological and genetic differences. This, coupled with low sampling and underdeveloped genetic techniques, has made taxonomy difficult to determine. Recent research using large genetic datasets has clarified these relationships into the groupings we recognize today. Pinus
5396-468: The state can be subdivided in other ways as well. For example, the Central Valley is a region that is distinct both culturally and topographically from coastal California, though in northern versus southern California divisions, the Sacramento Valley and most of the San Joaquin Valley are usually placed in northern California. Some observers describe three partitions of California, with north and south sections separated by Central California . The state
5472-399: The trees. There is some evidence that P. flexilis has a symbiotic relationship with nitrogen-fixing bacteria that inhabit the needles. The species is generally shade tolerant and resistant to fire, but does not thrive in dense habitats, instead occurring in areas relatively hostile to other species. Limber pine is susceptible to white pine blister rust , caused by Cronartium ribicola ,
5548-462: The west and coast, especially in the summer, creating some of the coolest summer conditions in North America. Since the first decade of the 21st century, droughts and wildfires have increased in frequency as a consequence of climate change . The population of the forty-eight counties of northern California has shown a steady increase over the years. The largest percentage increase outside
5624-452: Was first established in 1770, and at San Francisco in 1776. In all, ten missions stretched along the coast from Sonoma to Monterey (and still more missions to the southern tip of Baja California ). In 1786, the French signaled their interest in the northern California area by sending a voyage of exploration to Monterey. The first twenty years of the 19th century continued the colonization of
5700-529: Was prevented from appearing on the 2018 California ballot because of a constitutional review by the Supreme Court of California . Since the events of the California Gold Rush , Northern California has been a leader on the world's economic, scientific, and cultural stages. From the development of gold mining techniques and logging practices in the 19th century that were later adopted around the world, to
5776-410: Was retrieved by two researchers who counted 400 rings. Extrapolating this data gives an age close to 3,000 years. Pinus flexilis is a member of the white pine group, Pinus subgenus Strobus , and like all members of that group, the leaves ('needles') are in fascicles (bundles) of five, with a deciduous sheath. This distinguishes it from the lodgepole pine , with two needles per fascicle, and
#649350