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California Bay Laurel
''Umbellularia californica'' is a large hardwood tree native to coastal forests and the Sierra foothills of California, and to coastal forests extending into Oregon. It is the sole species in the genus ''Umbellularia''. The tree's pungent leaves have a similar flavor to bay leaves, though stronger, and it may be mistaken for bay laurel. The tree is endemic to the California Floristic Province. It is a host of the pathogen that causes sudden oak death. The dry wood has a color range from blonde (like maple) to brown (like walnut). It is considered an excellent tonewood and is sought after by luthiers and woodworkers. Description It is an evergreen tree growing to tall with a trunk up to in diameter. The largest recorded tree is in Mendocino County, California, and measured (as of 1997) in height with a spread. The thin bark is smooth and gray-brown when young, later turning reddish brown and scaly. The fragrant leaves are smooth-edged and lance-shaped, long and around a thir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Jackson Hooker
Sir William Jackson Hooker (6 July 178512 August 1865) was an English botany, botanist and botanical illustrator, who became the first director of Kew Gardens, Kew when in 1841 it was recommended to be placed under state ownership as a botanic garden. At Kew he founded the Kew Herbarium, Herbarium and enlarged the gardens and arboretum. Hooker was born and educated in Norwich. An inheritance gave him the means to travel and to devote himself to the study of natural history, particularly botany. He published his account of an expedition to Iceland in 1809, even though his notes and specimens were destroyed during his voyage home. He married Maria, the eldest daughter of the Norfolk banker Dawson Turner, in 1815, afterwards living in Halesworth for 11 years, where he established a herbarium that became renowned by botanists at the time. He held the post of Regius Professor of Botany at Glasgow University, where he worked with the botanist and lithographer Thomas Hopkirk and e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaves
A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the shoot system. In most leaves, the primary photosynthetic tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf, but in some species, including the mature foliage of ''Eucalyptus'', palisade mesophyll is present on both sides and the leaves are said to be isobilateral. The leaf is an integral part of the stem system, and most leaves are flattened and have distinct upper ( adaxial) and lower ( abaxial) surfaces that differ in color, hairiness, the number of stomata (pores that intake and output gases), the amount and structure of epicuticular wax, and other features. Leaves are mostly green in color due to the presence of a compound called chlorop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Francisco Water Department
The San Francisco Public Utilities Commission (SFPUC) is a public agency of the City and County of San Francisco that provides water, wastewater, and electric power services to the city. The SFPUC also provides wholesale water service to an additional 1.9 million customers in three other San Francisco Bay Area counties. Functions The SFPUC manages a complex water supply system consisting of reservoirs, tunnels, pipelines and treatment facilities and is the third largest municipal utility agency in California. The SFPUC provides fresh water from Hetch Hetchy Reservoir and other sources to 2.7 million customers for residential, commercial, and industrial uses. About one-third of its delivered water is sent to customers within San Francisco, while the remaining two-thirds are sent to customers in Alameda, San Mateo, and Santa Clara counties. The SFPUC has been an clean power provider for more than 100 years, when it began generating hydro power for the construction of the O'Sha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Mateo County
San Mateo County ( ), officially the County of San Mateo, is a county (United States), county located in the U.S. state of California. As of the 2020 United States census, the population was 764,442. Redwood City, California, Redwood City is the county seat, the third-most populated city in the county after Daly City, California, Daly City and San Mateo, California, San Mateo. San Mateo County is included in the San Francisco–Oakland–Berkeley, CA MSA (metropolitan statistical area), Silicon Valley, and is part of the San Francisco Bay Area, the nine counties bordering San Francisco Bay. As of 2020, it has a median household income of $128,091, the List of highest-income counties in the United States, fourth-highest household income of any county in the nation behind Loudoun County, Virginia, Falls Church, Virginia, and Santa Clara County, California. The county covers most of the San Francisco Peninsula. The county is predominantly suburban and is home to many corporate cam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willis Linn Jepson
Willis Linn Jepson (August 19, 1867 – November 7, 1946) was a late-19th and 20th century California botanist, professor, conservationist, and writer. A co-founder of the Sierra Club in 1892, he was much honored in later life for his research and impact on his fields. Career Jepson was born at Little Oak Ranch near Vacaville, California. He became interested in botany as a boy and explored the adjacent San Francisco Bay Area, coming into contact with various botanists before he entered college. In 1892, at the age of 25, Jepson, John Muir, and Warren Olney formed the Sierra Club, in Olney's San Francisco law office. From 1895 to 1898, Jepson served as instructor in Botany and carried on research at the University of California, Berkeley, Cornell University (1895), and Harvard University (1896–1897). He received his Ph.D. at Berkeley in 1899. He was made assistant professor in 1899, associate professor in 1911, professor in 1918, and professor emeritus in 1937. He wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lauraceae
Lauraceae, or the laurels, is a plant Family (biology), family that includes the bay laurel, true laurel and its closest relatives. This family comprises about 2850 known species in about 45 genus (biology), genera worldwide. They are dicotyledons, and occur mainly in warm temperate and tropical regions, especially Southeast Asia and South America. Many are aromatic evergreen trees or shrubs, but some, such as ''Sassafras'', are deciduous, or include both deciduous and evergreen trees and shrubs, especially in tropical and temperate climates. The genus ''Cassytha'' is unique in the Lauraceae in that its members are parasite, parasitic vines. Most laurels are highly poisonous. Overview The family has a worldwide distribution in tropical and warm climates. The Lauraceae are important components of tropical forests ranging from low-lying to Montane forest, montane. In several forested regions, Lauraceae are among the top five families in terms of the number of species present. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Persea
''Persea'' is a genus of about 111 species of evergreen trees belonging to the laurel family, Lauraceae. The best-known member of the genus is the avocado, ''P. americana'', widely cultivated in subtropical regions for its large, edible fruit. Overview They are medium-size trees, tall at maturity. The leaf, leaves are simple, lanceolate to broad lanceolate, varying with species from long and broad, and arranged spirally or alternately on the stems. The flowers are in short panicles, with six small greenish-yellow perianth segments long, nine stamens and an ovary with a single embryo. The fruit is an oval or pear-shaped berry (botany), berry, with a fleshy outer covering surrounding the single seed; size is very variable among the species, from in e.g. ''P. indica'', up to in some cultivars of ''P. americana''. Distribution and ecology The species of ''Persea'' have a disjunct distribution, with about 109 Neotropical realm, Neotropical species, ranging from Argentina and Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avocado
The avocado, alligator pear or avocado pear (''Persea americana'') is an evergreen tree in the laurel family (Lauraceae). It is native to Americas, the Americas and was first domesticated in Mesoamerica more than 5,000 years ago. It was prized for its large and unusually Avocado oil, oily fruit. The tree likely originated in the highlands bridging south-central Mexico and Guatemala. Avocado trees have a native growth range from Mexico to Costa Rica. Its fruit, sometimes also referred to as an alligator pear or avocado pear, is botanically a large Berry (botany), berry containing a single large seed. Sequencing of its genome showed that the evolution of avocados was shaped by polyploidy events and that commercial varieties have a Hybrid (biology), hybrid origin. Avocado trees are partly Self-pollination, self-pollinating, and are often Plant propagation, propagated through grafting to maintain consistent fruit output. Avocados are presently cultivated in the tropical and Medi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berry (botany)
In botany, a berry is a fleshy fruit without a drupe, drupe (pit) produced from a single flower containing one Ovary (botany), ovary. Berries so defined include grapes, Ribes, currants, and tomatoes, as well as cucumbers, eggplants (aubergines), persimmons and bananas, but exclude certain fruits that meet the berry, culinary definition of berries, such as strawberries and raspberries. The berry is the most common type of fleshy fruit in which the entire outer layer of the ovary wall ripens into a potentially edible "pericarp". Berries may be formed from one or more gynoecium, carpels from the same flower (i.e. from a simple or a compound ovary). The seeds are usually embedded in the fleshy interior of the ovary, but there are some non-fleshy exceptions, such as ''Capsicum'' species, with air rather than pulp around their seeds. Many berries are edible, but others, such as the Potato fruit, fruits of the potato and the deadly nightshade, are poisonous to humans. A plant that be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fruit
In botany, a fruit is the seed-bearing structure in flowering plants (angiosperms) that is formed from the ovary after flowering. Fruits are the means by which angiosperms disseminate their seeds. Edible fruits in particular have long propagated using the movements of humans and other animals in a symbiotic relationship that is the means for seed dispersal for the one group and nutrition for the other; humans, and many other animals, have become dependent on fruits as a source of food. Consequently, fruits account for a substantial fraction of the world's agricultural output, and some (such as the apple and the pomegranate) have acquired extensive cultural and symbolic meanings. In common language and culinary usage, ''fruit'' normally means the seed-associated fleshy structures (or produce) of plants that typically are sweet (or sour) and edible in the raw state, such as apples, bananas, grapes, lemons, oranges, and strawberries. In botanical usage, the term ''fruit'' als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurus
''Laurus'' () is a genus of evergreen trees or shrubs belonging to the laurel family, Lauraceae. The genus contains three or more species, including the bay laurel or sweet bay, ''L. nobilis'', widely cultivated as an ornamental plant and a culinary herb. Description They are slow-growing, large, evergreen aromatic shrubs or trees with alternate, ovate leaves and insignificant yellow male and female flowers borne on separate plants (dioecious). They are frost-hardy but in temperate zones they require a sheltered spot in full sun that is not subject to prolonged freezing. Plants in pots can be moved into a cold greenhouse during the winter months. Species The number of species in the genus has not yet been fully resolved. Three species are currently accepted: *'' Laurus azorica'', – Azores laurel. Native to the Azores. *''Laurus nobilis'' – bay laurel, true laurel, or sweet bay. Native to the Mediterranean region. Used as an ornamental plant and culinary herb (one type o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umbel
UMBEL (Upper Mapping and Binding Exchange Layer) is a logically organized knowledge graph of 34,000 concepts and entity types that can be used in information science for relating information from disparate sources to one another. It was retired at the end of 2019. UMBEL was first released in July 2008. Version 1.00 was released in February 2011. Its current release is version 1.50. The grounding of this information occurs by common reference to the permanent URIs for the UMBEL concepts; the connections within the UMBEL upper ontology enable concepts from sources at different levels of abstraction or specificity to be logically related. Since UMBEL is an open-source extract of the OpenCyc knowledge base, it can also take advantage of the reasoning capabilities within Cyc. UMBEL has two means to promote the semantic interoperability of information:. It is: * An ontology of about 35,000 reference concepts, designed to provide common mapping points for relating different on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
