All articles starting with P
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Pinus monticola
Pinus monticola, western white pine (mountain white pine, Idaho white pine, silver pine), a large five-needle timber pine of western North America, devastated by introduced white pine blister rust and now restored through resistant breeding programs.
Pinus nigra
Pinus nigra (European black pine, Austrian pine, Corsican pine) is a Mediterranean to Caucasus pine with five generally accepted subspecies, IUCN Least Concern status, heavy use in forestry, and low post-fire resilience.
Pinus oocarpa
Pinus oocarpa (ocote pine, pino ocote, egg-cone pine) is a pine native from Mexico to Nicaragua, dominant in Central American pine forests, valued for timber, pulp, and resin, with high resistance to pitch canker.
Pinus palustris
Pinus palustris, longleaf pine or southern pine, is a fire-adapted evergreen conifer of the southeastern US coastal plain, with a grass-stage seedling, needles in threes, and the largest cones of any eastern North American pine; its ecosystem has fallen about 97 percent since settlement.
Pinus patula
Pinus patula, Mexican weeping pine (pino colorado), is a fast-growing Mexican pine, the leading plantation softwood in South Africa (333,566 ha) and widely used for pulp and timber across tropical Africa and the Andes.
Pinus pinaster
Pinus pinaster, maritime pine (pino marítimo, pino negral), a western-central Mediterranean pine of family Pinaceae; thick-barked, serotinous-coned fire-adapted timber and resin tree; IUCN Least Concern; invasive where planted, e.g. southwest Australia.
Pinus ponderosa
Pinus ponderosa, ponderosa pine or western yellow pine, is a widespread, drought- and fire-tolerant timber pine of western North America, from British Columbia to Mexico, with thick bark, 300-600 year lifespans, and five recognized subspecies.
Pinus radiata
Pinus radiata (radiata pine, Monterey pine), a coastal California and Baja California island conifer, is the world's most widely planted softwood plantation tree, dominating New Zealand, Chile, and Australian forestry with 25-35 year rotations.
Pinus resinosa
Pinus resinosa, red pine or Norway pine, a fire-dependent conifer of the Great Lakes and St Lawrence region; 200-400 year lifespan, two needles per fascicle, regeneration from seed after fire, widely planted in the Lake States.
Pinus roxburghii
Pinus roxburghii, chir pine or long-leaved Indian pine (चीड), a Himalayan pine from Pakistan to NW India at 450–2300 m; dominant resin and timber tree, IUCN Least Concern, needles in threes, fire-resistant.
Pinus sibirica
Pinus sibirica (Siberian pine, Siberian stone pine, 西伯利亚五针松) is a five-needled taiga pine of NE Europe to N China, grown for edible cedar nuts, oil, and timber; closely related to Pinus cembra.
Pinus strobus
Pinus strobus, eastern white pine (northern white pine, Weymouth pine), a large five-needled North American conifer up to 150 ft tall, valued timber species threatened by white pine blister rust and white pine weevil.
Pinus subg. Strobus
Pinus subg. Strobus, the white or soft pines, is one of the two subgenera of the genus Pinus, holding about 48 species including white pines, stone pines, and pinyons.
Pinus sylvestris
Pinus sylvestris, Scots pine, is the most widely distributed pine in the world, native from Scotland to Siberia. A 15–30 m two-needle pine, fire-adapted, shade-intolerant, and the tree of Scotland's Caledonian pinewoods.
Pinus tabuliformis
Pinus tabuliformis, known as Chinese pine and Chinese red pine, is a coniferous tree native to China and Korea, and is the principal afforestation species of northern China.
Pinus taeda
Pinus taeda, the loblolly pine, is a needled evergreen pine native to the central and southeastern United States, the South's most important timber species on roughly 29 million acres.
Pinus thunbergii
Pinus thunbergii, Japanese black pine (kuromatsu, haesong), a coastal conifer native to Korea and central/southern Japan, used for erosion control and bonsai, threatened by pine wilt disease, Least Concern, invasive in parts of eastern North America and New Zealand.
Pinus virginiana
Pinus virginiana, Virginia pine (scrub pine, Jersey pine), a small two-needle pine of the eastern United States, a shade-intolerant pioneer on dry uplands, grown for pulpwood, Christmas trees, and mine-spoil reclamation.
Pinus yunnanensis
Pinus yunnanensis, the Yunnan pine, is a pine native to south-central China and northern Myanmar, named in 1899. It dominates Yunnan-Guizhou Plateau forests at 700 to 3000 m.
Pinwheel (TV series)
Pinwheel was an American preschool TV series combining humans, puppets, and animated shorts, premiering December 1, 1977 on QUBE channel C-3 in Columbus, Ohio, and becoming the founding program of Nickelodeon in 1979.
Pinwheel Galaxy
The Pinwheel Galaxy, also known as Messier 101, M101, or NGC 5457, is a large face-on spiral galaxy in Ursa Major, about 25 million light-years away.
Pinworm (parasite)
Pinworm (Enterobius vermicularis, enterobiasis, oxyuriasis) is a human intestinal roundworm causing nighttime anal itching, spread by fecal–oral egg transfer, diagnosed by tape test, and treated with two doses of mebendazole, albendazole, or pyrantel pamoate.
Pinworm infection
Pinworm infection (enterobiasis, Enterobius vermicularis, threadworm) is a common intestinal roundworm infection causing nighttime anal itching, diagnosed by tape test, and treated with two doses of mebendazole, albendazole, or pyrantel pamoate.
Pinya Kingdom
The Pinya Kingdom, also known as the Vijaia state, ruled central Myanmar from 1313 to 1365. Founded by Thihathu, it fell to Maw Shan raids in 1364 and was succeeded by Ava.
Pinyin (汉语拼音)
Hanyu Pinyin (汉语拼音), China's official romanization of Mandarin, approved 11 February 1958, ISO standard 7098 since 1982; 26 letters, 21 onsets, 39 rimes, four tones; used for literacy, indexing, and typing Chinese.
Pinyon Plain Mine
Pinyon Plain Mine, formerly Canyon Mine, is an underground uranium mine in the Kaibab National Forest near the Grand Canyon, Arizona, the state's only operating uranium mine since 2023.
Pinyon–juniper woodland
Pinyon–juniper woodland (PJ woodland), semiarid North American vegetation of pinyon pines and junipers covering over 190,000 km² of the western US; three types (persistent woodlands, savannas, wooded shrublands), centennial fire cycles, post-settlement expansion, and pinyon jay decline.
Pio (AutoStore)
Pio, short for Product In/Out, is a standardized, subscription-based warehouse automation system built on AutoStore cube storage technology, launched by the Norwegian company AutoStore in 2021 for small and mid-sized businesses.
Pío Baroja
Pío Baroja y Nessi (1872–1956) was a Spanish novelist of the Generation of '98 who wrote almost a hundred novels, including Zalacaín el aventurero and El árbol de la ciencia.
Pío del Río Hortega
Pío del Río Hortega (1882–1945) was a Spanish neurohistologist who discovered microglia and oligodendroglia, developed the silver carbonate stain, and was twice nominated for the Nobel Prize.