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Cirsium Peckii
''Cirsium peckii'', the Steens Mountain thistle, is a very spiny and prickly perennial plant in the family Asteraceae that grows in the Great Basin of the western United States.Great Basin Wildflowers, Laird R. Blackwell, 2006, Morris Book Publishing LLC., Growth pattern It is a perennial plant that grows with a single nonbranching erect stem from tall, covered with sharp stiff hairs. Leaves and stems Leaves are lanceolate and deeply divided, with sharp, pointed, yellow needle-like teeth on the points of lobes, and are either hairless or have sparse hairs on the midrib. The lower leaves are long. Inflorescence and fruit Light lavender heads of flowers are clustered at the base of the leaves along the upper part of the stem. It flowers from June to August. Range and habitat It grows from on dry slopes and rocky places in sagebrush steppe communities of the Great Basin, to southern Oregon where it can be found on Steens Mountain. Etymology Morton Peck was a 20th-centur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thorns, Spines, And Prickles
In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called ''spinose teeth'' or ''spinose apical processes''), are hard, rigid extensions or modifications of leaves, roots, stems or buds with sharp, stiff ends, and generally serve the same function: physically deterring animals from eating the plant material. Description In common language the terms are used more or less interchangeably, but in botanical terms, thorns are derived shoots (so that they may or may not be branched, they may or may not have leaves, and they may or may not arise from a bud),Simpson, M. G. 2010. "Plant Morphology". In: ''Plant Systematics, 2nd. edition''. Elsevier Academic Press. Chapter 9.Judd, Campbell, Kellogg, Stevens, Donoghue. 2007. "Structural and Biochemical Characters". In: ''Plant Systematics, a phylogenetic approach, third edition''. Chapter 4. spines are derived from leaves (either the entire leaf or some part of the leaf that has vascular bundles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perennial Plant
A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also widely used to distinguish plants with little or no woody growth (secondary growth in girth) from trees and shrubs, which are also technically perennials. Perennialsespecially small flowering plantsthat grow and bloom over the spring and summer, die back every autumn and winter, and then return in the spring from their rootstock or other overwintering structure, are known as herbaceous perennials. However, depending on the rigours of local climate (temperature, moisture, organic content in the soil, microorganisms), a plant that is a perennial in its native habitat, or in a milder garden, may be treated by a gardener as an annual and planted out every year, from seed, from cuttings, or from divisions. Tomato vines, for example, live several y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteraceae
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae were first described in the year 1740. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger family is unclear as the quantity of extant species in each family is unknown. Most species of Asteraceae are annual, biennial, or perennial herbaceous plants, but there are also shrubs, vines, and trees. The family has a widespread distribution, from subpolar to tropical regions in a wide variety of habitats. Most occur in hot desert and cold or hot semi-desert climates, and they are found on every continent but Antarctica. The primary common characteristic is the existence of sometimes hundreds of tiny individual florets which are held together by protective involucres in flower heads, or more technicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Basin
The Great Basin is the largest area of contiguous endorheic basin, endorheic watersheds, those with no outlets, in North America. It spans nearly all of Nevada, much of Utah, and portions of California, Idaho, Oregon, Wyoming, and Baja California. It is noted for both its arid climate and the basin and range topography that varies from the North American low point at Badwater Basin in Death Valley to the highest point of the contiguous United States, less than away at the summit of Mount Whitney. The region spans several physical geography, physiographic divisions, biomes, ecoregions, and deserts. Definition The term "Great Basin" is applied to hydrography, hydrographic, ecology, biological, floristic province, floristic, physiographic, topography, topographic, and Ethnography, ethnographic geographic areas. The name was originally coined by John C. Frémont, who, based on information gleaned from Joseph R. Walker as well as his own travels, recognized the hydrographic nature o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sagebrush Steppe
Sagebrush steppe is a type of shrub-steppe, a plant community characterized by the presence of shrubs, and usually dominated by sagebrush, any of several species in the genus ''Artemisia''.Sagebrush steppe. National Park Service. This ecosystem is found in the in the United States.Sagebrush Steppe Conservation Project /ID National Lab. Wildlife Conservation Society. The most common sagebrush species in the sagebrush steppe in mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steens Mountain
Steens Mountain is in the southeastern part of the U.S. state of Oregon, and is a large fault-block mountain. Located in Harney County, it stretches some north to south, and rises from the west side the Alvord Desert at elevation of about to a summit elevation of . Steens Mountain is not part of a mountain range but is properly a single mountain, the largest of Oregon's fault-block mountains.Conkling, C., Jackman, E. R., & Scharff, J. (1967)Steens Mountain in Oregon's high desert country Caxton Press. Retrieved April 25, 2022 The Steens Mountain Wilderness encompasses of Steens Mountain. of the Wilderness are protected from grazing and free of cattle. History The mountain was called the "Snowy Mountains" by John Work, one of the fur traders who were the first Europeans in the area. It was renamed in 1860 for United States Army Major Enoch Steen, who fought and drove members of the Paiute tribe off the mountain. American Indians used the Steens Mountain, particularly Big I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morton Peck
Morton Eaton Peck (1871–1959) was an American botanist specializing in flora of Oregon. He was professor of botany at Willamette University. He wrote '' Manual of the Higher Plants of Oregon''. Botanist Arthur Cronquist Arthur John Cronquist (March 19, 1919 – March 22, 1992) was an American biologist, botanist and a specialist on Compositae. He is considered one of the most influential botanists of the 20th century, largely due to his formulation of the Cr ... commented that Peck's Oregon plant collection was "the most complete, so far as I know that exists." References American botanists Willamette University faculty 1871 births 1959 deaths {{US-botanist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willamette University
Willamette University is a private liberal arts college with locations in Salem and Portland, Oregon. Founded in 1842, it is the oldest college in the Western United States. Originally named the Oregon Institute, the school was an unaffiliated outgrowth of the Methodist Mission. The name was changed to Wallamet University in 1852, followed by the current spelling in 1870. Willamette founded the first medical school and law school in the Pacific Northwest in the second half of the 19th century. The college is a member of the NCAA's Division III Northwest Conference. Approximately 2,100 students are enrolled at Willamette between the graduate and undergraduate programs. History The college was founded as the Oregon Institute by the missionary Jason Lee, who had arrived in what was then known as the Oregon Country in 1834 and had founded the Indian Manual Labor Institute for the education of the local Native Americans. Lee requested additional support for his mission, and recei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A Manual Of The Higher Plants Of Oregon
''Manual of the Higher Plants of Oregon'' was an early flora of plants of Oregon written by Morton Peck.Morton Peck, Oregon Encyclopedia/ref> It was praised for its format, portability, phylogenetic keys, having new species recorded, and completeness of both descriptions of plants and physiographic provinces.Morton Peck, Oregon Encyclopedia/ref> The second edition (1961) includes many changes to the first edition (1941) which, according to Peck, is "now decidedly out of date." See also * :Flora of Oregon, Flora of Oregon *Flora (publication) A Flora is a book or other work which describes the plant species occurring in an area or time period, often with the aim of allowing identification. The term is usually capitalized to distinguish it from the use of "flora" to mean the plants rathe ... References Florae (publication) . Botany in North America {{Plant-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirsium
''Cirsium'' is a genus of perennial and biennial flowering plants in the Asteraceae, one of several genera known commonly as thistles. They are more precisely known as plume thistles. These differ from other thistle genera ('' Carduus'', ''Silybum'' and ''Onopordum'') in having feathered hairs to their achenes. The other genera have a pappus of simple unbranched hairs. They are mostly native to Eurasia and northern Africa, with about 60 species from North America (although several species have been introduced outside their native ranges). Thistles are known for their effusive flower heads, usually purple, rose or pink, also yellow or white. The radially symmetrical disc flowers are at the end of the branches and are visited by many kinds of insects, featuring a generalised pollination syndrome. They have erect stems and prickly leaves, with a characteristic enlarged base of the flower which is commonly spiny. The leaves are alternate, and some species can be slightly hairy. E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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