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Hesperostipa
''Hesperostipa'' is a genus of grasses in the family Poaceae. Members of the genus are commonly known as needle-and-thread grass or needlegrass. The ''Hesperostipa'' species, formerly called ''Stipa'', are endemic to North America. The new name adds , as other ''Stipa'' species are found on the Eurasian continent (i.e., the eastern hemisphere). Selected species *''Hesperostipa comata'' (Trin. & Rupr.) Barkworth – needle-and-thread grass **''Hesperostipa comata'' subsp. ''comata'' **''Hesperostipa comata'' subsp. ''intermedia'' (Scribn. & Tweedy) Barkworth *''Hesperostipa curtiseta'' (Hitchc.) Barkworth – Canadian needlegrass *''Hesperostipa neomexicana'' (Thurb.) Barkworth – New Mexico needlegrass *''Hesperostipa saxicola ''Hesperostipa'' is a genus of grasses in the family Poaceae. Members of the genus are commonly known as needle-and-thread grass or needlegrass. The ''Hesperostipa'' species, formerly called '' Stipa'', are endemic to North America. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hesperostipa Spartea
''Hesperostipa spartea'', formerly ''Stipa spartea'', is a species of grass known by the common names porcupine grass, western porcupine grass, short-awn porcupine grass, porcupine needlegrass, and big needlegrass. It is native to North America, where it is widespread from British Columbia to Ontario in Canada and through the central and Great Lakes regions of the United States. It is a bunchgrass species in the genus ''Hesperostipa''.USDA - ''Hesperostipa spartea'' . accessed 6.26.2012 Distribution ''Hesperostipa spartea'' is native to the Great Plains and |
Hesperostipa Neomexicana
''Hesperostipa'' is a genus of grasses in the family Poaceae. Members of the genus are commonly known as needle-and-thread grass or needlegrass. The ''Hesperostipa'' species, formerly called '' Stipa'', are endemic to North America. The new name adds , as other ''Stipa'' species are found on the Eurasian continent (i.e., the eastern hemisphere). Selected species *''Hesperostipa comata'' (Trin. & Rupr.) Barkworth – needle-and-thread grass **''Hesperostipa comata'' subsp. ''comata'' **''Hesperostipa comata'' subsp. ''intermedia'' (Scribn. & Tweedy) Barkworth *'' Hesperostipa curtiseta'' (Hitchc.) Barkworth – Canadian needlegrass *'' Hesperostipa neomexicana'' (Thurb.) Barkworth – New Mexico needlegrass *'' Hesperostipa saxicola'' (Hitchc.) Valdés-Reyna & Barkworth *''Hesperostipa spartea ''Hesperostipa spartea'', formerly ''Stipa spartea'', is a species of grass known by the common names porcupine grass, western porcupine grass, short-awn porcupine grass, p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hesperostipa Comata
''Hesperostipa comata'', commonly known as needle-and-thread grass, is a species of grass native to North America, especially the western third. It has a wide distribution spanning from northern Canada to Mexico. Description ''Hesperostipa comata'' is a perennial bunchgrass producing erect, unbranched stems to about in maximum height. The narrow inflorescence is up to long in taller plants, with the mature spikelet bearing a spiraling, hairy, spear-shaped awn up to in length. The seeds of this grass have hygroscopic extensions that bend with changes in humidity, enabling them to disperse over the ground. Each seed has an awn that twists several turns when the seed is released. Increased moisture causes it to untwist, and, upon drying, to twist again, thus the seed is drilled into the ground. Habitat This is a grass of many habitat types, from grassland to pine forest. Young shoots provide a favored food source for black-tailed prairie dogs and black-tailed jackrabbits, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stipa
''Stipa'' is a genus of around 300 large perennial hermaphroditic grasses collectively known as feather grass, needle grass, and spear grass. They are placed in the subfamily Pooideae and the tribe Stipeae, which also contains many species formerly assigned to ''Stipa'', which have since been reclassified into new genera. Many species are important forage crops. Several species such as ''Stipa brachytricha'', ''S. arundinacea'', ''S. splendens'', ''S. calamagrostis'', ''S. gigantea'' and ''S. pulchra'' are used as ornamental plants. One former species, esparto grass ('' Macrochloa tenacissima''), is used for crafts and extensively in paper making. It is a coarse grass with inrolled leaves and a panicle patterned inflorescence. Ecology Species of the genus ''Stipa'' can occur in grasslands or in savanna habitats. Certain specific prairie plant associations are dominated by grasses of the genus ''Stipa'', which genus often lends its name to the terminology of some prairie typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mary Barkworth
Mary Elizabeth Barkworth (born 1941, Marlborough, England) is an American botanist and professor emerita at Utah State University in Logan, Utah. Education and career Barkworth has a B.Sc. from the University of British Columbia, and went on to teach school in British Columbia after graduation. She has an M.Ed. and a Ph.D. in 1975 from Western Washington University where she worked on variation in '' Brodiaea''. Following her Ph.D. she worked with Agriculture Canada until moving to Utah State University in 1979, where she also served as the director of the Intermountain Herbarium. Barkworth retired in 2012. Barkworth is known for her work on grasses, particularly members of the Stipeae and Triticeae. She also had responsibility for production of the two grass volumes in the ''Flora of North America The ''Flora of North America North of Mexico'' (usually referred to as ''FNA'') is a multivolume work describing the native plants and naturalized plants of North America, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poaceae
Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns and pasture. The latter are commonly referred to collectively as grass. With around 780 genera and around 12,000 species, the Poaceae is the fifth-largest plant family, following the Asteraceae, Orchidaceae, Fabaceae and Rubiaceae. The Poaceae are the most economically important plant family, providing staple foods from domesticated cereal crops such as maize, wheat, rice, barley, and millet as well as forage, feed for meat-producing animals. They provide, through direct human consumption, just over one-half (51%) of all dietary energy; rice provides 20%, wheat supplies 20%, maize (corn) 5.5%, and other grains 6%. Some members of the Poaceae are used as building materials (bamboo, thatch, and straw); others can provide a source of bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example ''Cytisus aeolicus'' is an endemite of the Italian flora. ''Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurasia
Eurasia (, ) is the largest continental area on Earth, comprising all of Europe and Asia. Primarily in the Northern and Eastern Hemispheres, it spans from the British Isles and the Iberian Peninsula in the west to the Japanese archipelago and the Russian Far East to the east. The continental landmass is bordered by the Atlantic Ocean and Africa to the west, the Pacific Ocean to the east, the Arctic Ocean to the north, and by Africa, the Mediterranean Sea, and the Indian Ocean to the south. The division between Europe and Asia as two continents is a historical social construct, as many of their borders are over land; thus, in some parts of the world, Eurasia is recognized as the largest of the six, five, or four continents on Earth. In geology, Eurasia is often considered as a single rigid megablock. However, the rigidity of Eurasia is debated based on paleomagnetic data. Eurasia covers around , or around 36.2% of the Earth's total land area. It is also home to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pooideae
The Pooideae are the largest subfamily of the grass family Poaceae, with about 4,000 species in 15 tribes and roughly 200 genera. They include some major cereals such as wheat, barley, oat, rye and many lawn and pasture grasses. They are often referred to as cool-season grasses, because they are distributed in temperate climates. All of them use the C3 photosynthetic pathway. The Pooideae are the sister group of the bamboos within the BOP clade, and are themselves subdivided into 15 tribes. Phylogeny Relationships of tribes in the Pooideae according to a 2017 phylogenetic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ... classification, also showing the bamboos as sister group: References External links Poaceae subfamilies {{Poaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bunchgrasses Of North America
Tussock grasses or bunch grasses are a group of grass species in the family Poaceae. They usually grow as singular plants in clumps, tufts, hummocks, or bunches, rather than forming a sod or lawn, in meadows, grasslands, and prairies. As perennial plants, most species live more than one season. Tussock grasses are often found as forage in pastures and ornamental grasses in gardens. Many species have long roots that may reach or more into the soil, which can aid slope stabilization, erosion control, and soil porosity for precipitation absorption. Also, their roots can reach moisture more deeply than other grasses and annual plants during seasonal or climatic droughts. The plants provide habitat and food for insects (including Lepidoptera), birds, small animals and larger herbivores, and support beneficial soil mycorrhiza. The leaves supply material, such as for basket weaving, for indigenous peoples and contemporary artists. Tussock and bunch grasses occur in almost any hab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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