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Greasegrass
''Tridens flavus'', the purpletop tridens, red top, or greasegrass, is a large, robust perennial bunchgrass native to eastern North America. It widespread throughout its range and is most often found in man-made habitats, such as hay meadows and lawns. The seeds are purple, giving the grass its common name. The seeds are also oily, leading to its other common name, "greasegrass". It reproduces by seed and tillers. The grass is often confused with the similar looking Johnson grass (''Sorghum halepense''), although it is only distantly related. ''Tridens flavus'' is easily distinguished by its short, hairy ligule. It is a larval host to the common wood nymph, crossline skipper, little glassywing, and the Zabulon skipper The Zabulon skipper (''Lon zabulon'') (sometimes called the southern dimorphic skipperJames A. Scott (1986). ''The Butterflies of North America''. Stanford University Press, Stanford, CA. ) is a North American butterfly first described by the ....The Xer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . Linnaeus was born in Råshult, the countryside of Småland, in southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his ' in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he continued to collect an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perennial
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 ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bunchgrass
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 habitat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johnson Grass
Johnson grass or Johnsongrass, ''Sorghum halepense'', is a plant in the grass family, Poaceae, native to Asia and northern Africa. The plant has been introduced to all continents except Antarctica, and most larger islands and archipelagos. It reproduces by rhizomes and seeds. Johnson grass has been used for Fodder, forage and to stop erosion, but it is often considered a weed because: * Foliage that becomes wilted from frost or hot, dry weather can contain sufficient amounts of hydrogen cyanide to kill cattle and horses if it is eaten in quantity. * The foliage can cause 'bloat' in such herbivores from the accumulation of excessive nitrates; otherwise, it is edible. * It grows and spreads rapidly, it can 'choke out' other cash crops planted by farmers. This species occurs in crop fields, pastures, abandoned fields, rights-of-way, forest edges, and along streambanks. It thrives in open, disturbed, rich, bottom ground, particularly in cultivated fields. Johnson grass that is resi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ligule
A ligule (from "strap", variant of ''lingula'', from ''lingua'' "tongue") is a thin outgrowth at the junction of leaf and leafstalk of many grasses (Poaceae) and sedges. A ligule is also a strap-shaped extension of the corolla, such as that of a ray floret in plants in the daisy family Asteraceae. Poaceae and Cyperaceae The ligule is part of the leaf that is found at the junction of the blade and sheath of the leaf. It may take several forms, but it is commonly some form of translucent membrane or a fringe of hairs. The membranous ligule can be very short 1–2 mm (Kentucky bluegrass, ''Poa pratensis'') to very long 10–20 mm (Johnson grass, ''Sorghum halepense''), it can also be smooth on the edge or very ragged. Some grasses do not have a ligule, for example barnyardgrass (''Echinochloa crus-galli''). A ligule can also be defined as a membrane-like tissue or row of delicate hairs typically found in grasses at the junction of the leaf sheath and blade. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cercyonis Pegala
The common wood-nymph (''Cercyonis pegala'') is a North American butterfly in the family Nymphalidae. It is also known as the wood-nymph, grayling, blue-eyed grayling, and the goggle eye. Description The common wood-nymph can vary greatly. All individuals are brown with two eyespots on each forewing – the lower one often being larger than the upper one. Some may have many, few, or no eyespots on the ventral surface of the hindwing. In the southeastern part of its range, it has a large yellow patch on both surfaces of the forewing. In the western part of its range, it may have a pale yellow patch or may be lacking one. Individuals in the Northeast also lack the yellow patch, i.e., ''C. p. nephele''. In individuals with no yellow patch, there are two pale yellow eye rings that encircle both the forewing eyespots. The wingspan measures 5.3 to 7.3 cm (2.1 to 2.9 in). These butterflies have ears on their forewings that are most sensitive to low frequency sounds (l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crossline Skipper
''Polites origenes'', the crossline skipper, funet.fi is a in the family Hesperiidae. It is found in the eastern United States, excepting Florida, southern Ontario, and Quebec. The is 23–30 mm.Crossline Skipper Butterflies of Canada There is one generation in Can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Glassywing
''Vernia verna'', the little glassywing, is a species of butterfly of the family Hesperiidae. It is found in the eastern United States and southeastern Canada, from central New England west to central Nebraska, south to northern Florida, the Gulf Coast and southern Texas. The wingspan is 27–39 mm. Adults preferably feed on the nectar of white, pink and purple flowers, including ''Apocynum'', '' Prunella'', ''Mentha × piperita'', ''Eutrochium'' and ''Asclepias''. The larvae feed on ''Tridens flavus ''Tridens flavus'', the purpletop tridens, red top, or greasegrass, is a large, robust perennial bunchgrass native to eastern North America. It widespread throughout its range and is most often found in man-made habitats, such as hay meadows an ...''. Subspecies *''Vernia verna verna'' *''Vernia verna sequoyah'' (Freeman, 1942) References Butterflies described in 1862 Hesperiinae {{Hesperiinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zabulon Skipper
The Zabulon skipper (''Lon zabulon'') (sometimes called the southern dimorphic skipperJames A. Scott (1986). ''The Butterflies of North America''. Stanford University Press, Stanford, CA. ) is a North American butterfly first described by the French naturalists Jean Baptiste Boisduval and John Eatton Le Conte from the state of Georgia, United States. Description This small butterfly has slim, triangular wings. The upperside of the male's wings is mostly orange with the margins being dark brown. The underside of the male's wings is mainly yellow orange with the margins being dark brown.Rick Cech and Guy Tudor (2005). ''Butterflies of the East Coast''. Princeton University Press, Princeton, NJ. There is a yellow basal spot enclosed with brown.Jim P. Brock and Kenn Kaufman (2003). ''Butterflies of North America''. Houghton Mifflin, New York, NY. The upperside of the female's wings is dark brown with large, glassy spots near the forewing outer margin. The underside of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chloridoideae
Chloridoideae is one of the largest subfamilies of grasses, with roughly 150 genera and 1,600 species, mainly found in arid tropical or subtropical grasslands. Within the PACMAD clade, their sister group are the Danthonioideae. The subfamily includes widespread weeds such as Bermuda grass (''Cynodon dactylon'') or goosegrass (''Eleusine indica''), but also millet species grown in some tropical regions, namely finger millet (''Eleusine coracana'') and teff (''Eragrostis tef''). With the exception of some species in ''Ellisochloa'' and Eleusine indica, most of the subfamily's species use the C4 photosynthetic pathway. The first evolutionary transition from C3 to C4 photosynthesis in the grasses probably occurred in this subfamily, around 32 to 25 million years ago in the Oligocene. Phylogeny Relationships of tribes in the Chloridoideae according to a 2017 phylogenetic classification, also showing the Danthonioideae as sister group: The following genera have not been assigned t ... [...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 habitat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Described In 1753
Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes (the archaea and bacteria). By one definition, plants form the clade Viridiplantae (Latin name for "green plants") which is sister of the Glaucophyta, and consists of the green algae and Embryophyta (land plants). The latter includes the flowering plants, conifers and other gymnosperms, ferns and their allies, hornworts, liverworts, and mosses. Most plants are multicellular organisms. Green plants obtain most of their energy from sunlight via photosynthesis by primary chloroplasts that are derived from endosymbiosis with cyanobacteria. Their chloroplasts contain chlorophylls a and b, which gives them their green color. Some plants are parasitic or mycotrophic and have lost the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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