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Hastingsia Bracteosa
''Hastingsia bracteosa'' is a rare species of flowering plant in the agave subfamily of the asparagus family known by the common name large-flowered rushlily. It is endemic to Oregon in the United States, where it is limited to a twelve-mile stretch of the Illinois Valley in the southwestern part of the state.''Hastingsia bracteosa''. Center for Plant Conservation. This plant grows from a dark-coated and produces gray-green leaves up to 52 centimeters long. The slender, erect scape grows up to 87 centimeters tall. At the top is an |
Sereno Watson
Sereno Watson (December 1, 1826 in East Windsor Hill, Connecticut – March 9, 1892 in Cambridge, Massachusetts) was an American botanist. Graduating from Yale in 1847 in Biology, he drifted through various occupations until, in California, he joined the Clarence King Expedition and eventually became its expedition botanist. Appointed by Asa Gray as assistant in the Gray Herbarium of Harvard University in 1873, he later became its curator, a position he maintained until his death. Watson was elected a Fellow of the American Academy of Arts and Sciences in 1874, and a member of the National Academy of Sciences in 1889. Works * ''Botany'', in ''Report of the geological exploration of the 40th parallel made ... by Clarence King'', 1871 * * Publications by and about S. Watsoon WorldCat References External linksBiographical sketch at the Gray Herbarium site [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spring (hydrosphere)
A spring is a point of exit at which groundwater from an aquifer flows out on top of Earth's crust (pedosphere) and becomes surface water. It is a component of the hydrosphere. Springs have long been important for humans as a source of fresh water, especially in arid regions which have relatively little annual rainfall. Springs are driven out onto the surface by various natural forces, such as gravity and hydrostatic pressure. Their yield varies widely from a volumetric flow rate of nearly zero to more than for the biggest springs. Formation Springs are formed when groundwater flows onto the surface. This typically happens when the groundwater table reaches above the surface level. Springs may also be formed as a result of karst topography, aquifers, or volcanic activity. Springs also have been observed on the ocean floor, spewing hot water directly into the ocean. Springs formed as a result of karst topography create karst springs, in which ground water travels throu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rudbeckia Californica
''Rudbeckia californica'' is a species of flowering plant in the family Asteraceae, known by the common name California coneflower.Sierra Nevada Wildflowers, Karen Wiese, 2nd Ed, 2013, p.120 Habitat and range It is native to California, where it grows in the Sierra Nevada, the Klamath Mountains, and northern coastal areas. It can be found in moist habitat types, such as mountain meadows and streambanks. Growth pattern It is an erect perennial herb growing from a thick rhizome, its stem exceeding one meter in maximum height and sometimes approaching two meters. It usually has no branches. Leaves Most of the large leaves are basal, with a few alternately arranged along the stem. The leaves can be up to 30 centimeters long and are lance-shaped to oval, smooth-edged or lobed. Inflorescence and fruit The inflorescence is a usually solitary sunflower-like flower head with a base up to 6 centimeters wide lined with several ray florets, each of which are 2 to 6 centimeters long. The ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castilleja Miniata
''Castilleja miniata'' is a species of Indian paintbrush known by the common name giant red Indian paintbrush. It is native to western North America from Alaska to Ontario to California to New Mexico, where it grows usually in moist places in a wide variety of habitat types. Description This wildflower is a perennial herb growing up to about 80 centimeters tall, slender and green to dark purple in herbage color. The lance-shaped leaves are 3 to 6 centimeters long, pointed, and coated in thin hairs. The inflorescence is made up of bright red to pale orange or orange-tipped bracts. Between the bracts emerge the yellow-green, red-edged tubular flowers. Flowers bloom May to September. Because most species of the genus are parasitic on other plants, sophisticated networks are formed between their roots and those of other species. They therefore cannot be transplanted in most cases. Its native habitats include wet mountain meadows and stream banks below . Subspecies There are three s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gentiana Setigera
''Gentiana setigera'' is a species of gentian known by the common name Mendocino gentian. It is native to southern Oregon and northern California where it grows in wet places in the California Coast Ranges. It grows in serpentine soils. Description This is a low perennial herb with stems running along the ground and reaching up to about 40 centimeters in length. Leaves are spoon-shaped near the base and oval-shaped and paired further along the stem. Flowers appear singly or in inflorescences of a few flowers. Each flower is bell-shaped and bright blue with a speckled white center. The four to five lobes of the corolla are diamond-shaped and between them are sinus appendages that end in thready projections. The fruit is a capsule containing winged seeds. References External links Plant of the Week: ''Gentiana setigera''.United States Forest Service.''Gentiana setigera''.In: Jepson Flora Project (eds.) Jepson eFlora. Accessed 9 July 2017.Inventory of Rare and Endangered Plants. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chamaecyparis Lawsoniana
''Chamaecyparis lawsoniana'', known as Port Orford cedar or Lawson cypress, is a species of conifer in the genus ''Chamaecyparis'', family Cupressaceae. It is native to Oregon and northwestern California, and grows from sea level up to in the valleys of the Klamath Mountains, often along streams. Description A large evergreen tree, specimens mature up to tall or more, with trunks in diameter, exceptionally . The bark is silver-brown, vertically furrowed, and thick near the base. The foliage is arranged in lacy, flat sprays with a feathery appearance, usually somewhat glaucous (i.e. blue-green) in color. The leaves are scale-like, long, with narrow white markings on the underside, and produced on somewhat flattened shoots. The foliage gives off a rather pungent scent, not unlike parsley. The seed cones are globose, in diameter, with 6–10 scales, green at first, maturing brown in early fall, 6–8 months after pollination. The male cones are long, dark red, turning brow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helenium Bigelovii
''Helenium bigelovii'' is a North American perennial plant in the sunflower family, commonly known as Bigelow's sneezeweed.Sierra Nevada Wildflowers, Karen Wiese, 2nd Ed., 2013, p. 116 It grows in moist areas such as meadows, marshes, or streamsides. It is found at moderate and higher elevations (3000-10,000 ft) in the foothills and mountains of California and Oregon: Cascades, Coast Ranges, Klamath Mountains, Sierra Nevada, etc. Cultivars of the species are used in gardening as ornamentals. ''Helenium bigelovii'' is a perennial herb sometimes as much as tall. One plant can produce as many as 20 flower heads, either one per branch or in branching arrays. Each head has 14-20 yellow ray florets (bending backwards and with teeth at the tips) surrounding sometimes as many as 800 disc florets (yellow at first, turning brown as they get older).Norman F. Weeden, A Sierra Nevada Flora, 4th Ed., Wilderness Press, 1996. The species is named for J.M. Bigelow, a plant collector on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darlingtonia Californica
''Darlingtonia californica'' , also called the California pitcher plant, cobra lily, or cobra plant, is a species of carnivorous plant. It is the sole member of the genus ''Darlingtonia'' in the family Sarraceniaceae. This pitcher plant is native to Northern California and Oregon, US, growing in bogs and seeps with cold running water usually on serpentine soils. This plant is designated as uncommon due to its rarity in the field. The name "cobra lily" stems from the resemblance of its tubular leaves to a rearing cobra, complete with a forked leaf – ranging from yellow to purplish-green – that resemble fangs or a serpent's tongue. The plant was discovered in 1841 by the botanist William D. Brackenridge at Mount Shasta. In 1853 it was described by John Torrey, who named the genus ''Darlingtonia'' after the Philadelphian botanist William Darlington (1782–1863). In cultivation in the UK this plant has gained the Royal Horticultural Society's Award of Garden Merit. Biology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serpentine Soil
Serpentine soil is an uncommon soil type produced by weathered ultramafic rock such as peridotite and its metamorphic derivatives such as serpentinite. More precisely, serpentine soil contains minerals of the serpentine subgroup, especially antigorite, lizardite, and chrysotile or white asbestos, all of which are commonly found in ultramafic rocks. The term "serpentine" is commonly used to refer to both the soil type and the mineral group which forms its parent materials. Serpentine soils exhibit distinct chemical and physical properties and are generally regarded as poor soils for agriculture. The soil is often reddish, brown, or gray in color due to its high iron and low organic content. Geologically, areas with serpentine bedrock are characteristically steep, rocky, and vulnerable to erosion, which causes many serpentine soils to be rather shallow. The shallow soils and sparse vegetation lead to elevated soil temperatures and dry conditions. Due to their ultramafic origin, ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wet Meadow
A wet meadow is a type of wetland with soils that are saturated for part or all of the growing season. Debate exists whether a wet meadow is a type of marsh or a completely separate type of wetland. Wet prairies and wet savannas are hydrologically similar. Wet meadows may occur because of restricted drainage or the receipt of large amounts of water from rain or melted snow. They may also occur in riparian zones and around the shores of large lakes. Unlike a marsh or swamp, a wet meadow does not have standing water present except for brief to moderate periods during the growing season. Instead, the ground in a wet meadow fluctuates between brief periods of inundation and longer periods of saturation. Wet meadows often have large numbers of wetland plant species, which frequently survive as buried seeds during dry periods, and then regenerate after flooding. Wet meadows therefore do not usually support aquatic life such as fish. They typically have a high diversity of plant speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tepal
A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e. of very similar appearance), as in ''Magnolia'', or because, although it is possible to distinguish an outer whorl of sepals from an inner whorl of petals, the sepals and petals have similar appearance to one another (as in ''Lilium''). The term was first proposed by Augustin Pyramus de Candolle in 1827 and was constructed by analogy with the terms "petal" and "sepal". (De Candolle used the term ''perigonium'' or ''perigone'' for the tepals collectively; today, this term is used as a synonym for ''perianth''.) p. 39. Origin Undifferentiated tepals are believed to be the ancestral condition in flowering plants. For example, '' Amborella'', which is thought to have separated earliest in the evolution of flowering plants, has flowers with undiffer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agavoideae
Agavoideae is a subfamily of monocot flowering plants in the family Asparagaceae, order Asparagales. It has previously been treated as a separate family, Agavaceae. The group includes many well-known desert and dry-zone types, such as the agaves and yuccas (including the Joshua tree). About 640 species are placed in around 23 genera; they are widespread in the tropical, subtropical, and warm temperate regions of the world. Description and uses Species may be succulent or not. In general, Agavoideae leaves occur as rosettes at the end of a woody stem, which may range from extremely short to tree-like heights, as in the Joshua tree. The leaves are parallel-veined, and usually appear long and pointed, often with a hardened spine on the end, and sometimes with additional spines along the margins. ''Agave'' species are used to make ''tequila, pulque,'' and ''mezcal'', while others are valued for their fibers. They are quite popular for xeriscaping, as many have showy flowers. Sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
