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Senega Lewtonii
''Senega lewtonii'' is a rare species of flowering plant in the Polygalaceae, milkwort family known by the common name Lewton's polygala, or Lewton's milkwort. It is endemic to Florida in the United States, where it is limited to the central ridge of the peninsula. There are about 49 occurrences of the plant remaining.USFWS''Polygala lewtonii'' Five-year Review.August 2010. Most occurrences contain very few plants. The species is threatened by the loss and degradation of its habitat.''Polygala lewtonii''. The Nature Conservancy. This is a federally listed endangered species of the United States. Description The plant is a short-lived perennial herb producing erect, fleshy stems from the top of its taproot. The stems grow up to 20 centimeters tall. The leaves are alternatel ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polygalaceae
The Polygalaceae or the milkwort family are made up of flowering plants in the order Fabales. They have a near-cosmopolitan range, with about 27 genera and ''ca''. 900 known species of herbs, shrubs and trees. Over half of the species are in one genus, '' Polygala'', the milkworts. The family was first described in 1809 by Johann Hoffmansegg and Johann Link. In 1896, Robert Chodat split it into 3 tribes. A fourth tribe was split off from the tribe Polygaleae in 1992. Under the Cronquist classification system, Polygalaceae were treated in a separate order of their own, Polygalales. Currently, according to the Angiosperm Phylogeny Group, the family belongs in Fabales. Description ''Polygalaceae'' are annual or perennial herbs, shrubs, trees or lianas. Its zygomorphic, hermaphrodite, bisexual flowers have 3-5 petals and 5 sepals. Its leaves are usually alternate, but may be opposite, fascicled, or verticillate. Each flower usually contains 8&nb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pheidole Morrissii
''Pheidole'' () is a genus of ants that belongs to the ant subfamily Myrmicinae. The genus is widespread and ecologically dominant. Many species in the genus first evolved in the Americas, while some, such as ''Pheidole indica'' and ''Pheidole megacephala,'' originated from East Asia and Africa, respectively. These species eventually began spreading across the globe. ''Pheidole megacephala'' is considered a particularly problematic invasive species. Colony structure Most species of ''Pheidole'' are dimorphic, which means that colonies contain two castes of workers, the "minor" workers, and the "major" workers, or "soldiers". The latter generally have much larger heads and mandibles in comparison to their usually fairly modest body size. This caste is also notable due to the presence of wings, found in the queen ants as well as in the males. A colony may contain one or several queens, and also in larger colonies of '' Pheidole morrisi'', alates - virgin winged females and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire Regime
A fire regime is the pattern, frequency, and intensity of the bushfires and wildfires that prevail in an area over long periods of time. It is an integral part of fire ecology, and renewal for certain types of ecosystems. A fire regime describes the spatial and temporal patterns and ecosystem impacts of fire on the landscape, and provides an integrative approach to identifying the impacts of fire at an ecosystem or landscape level.Morgan, Penelope; Hardy; Swetnam; Rollins; Long (1999)"Mapping fire regimes across time and space: Understanding coarse and fine-scale fire patterns"(PDF). '' International Journal of Wildland Fire''. 10: 329–342 – via Google Scholar. If fires are too frequent, plants may be killed before they have matured, or before they have set sufficient seed to ensure population recovery. If fires are too infrequent, plants may mature, senesce, and die without ever releasing their seed. Fire regimes can change with the spatial and temporal variations in topograph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nolina Brittoniana
''Nolina brittoniana'' is a rare species of flowering plant in the asparagus family known by the common name Britton's beargrass. It is endemic to Florida, where there are 72 known populations, only a few large enough to be considered viable.USFWS''Nolina brittoniana''.May 2010. It is federally listed as an endangered species of the United States. This plant has no aboveground stem. It is a rosette of leaves attached at a bulblike base that arises from an underground caudex, a modified stem. The grasslike leaves are up to a meter long and rarely more than a centimeter wide. The edges are serrated with cartilaginous teeth. The inflorescence is a large, erect panicle up to a meter tall. It has small bracts and reduced leaves. The many small flowers have tepals measuring only 1 or 2 millimeters long. While the flowers are bisexual, they are functionally unisexual, with either the male or female part reduced and not functional. Most plants have either functionally male or female flowe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prunus Geniculata
''Prunus geniculata'' is a rare species of plum known by the common name scrub plum. The species is endemic to Florida. Description This plant is a low, rounded shrub with a gnarled trunk emerging from the sand and branching densely to form a mound up to two meters tall. The zig-zagging, angled, sharp-tipped branches are sometimes buried in sand and emerge covered in lichens. The gray bark cracks, revealing new reddish brown bark beneath. The alternately arranged leaves have smooth blades 1 to 3 centimeters long with wavy or toothed edges. Blooming occurs before the leaves appear. The flowers are usually solitary. They have five red sepals and five white petals a few millimeters long. There are many stamens at the center, each with a yellow anther. The species is andromonoecious, with individuals bearing both bisexual and male-only flowers. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ziziphus Celata
''Pseudoziziphus celata'', commonly known as the Florida jujube or Florida ziziphus, is a small xeric-adapted shrub endemic to the Lake Wales Ridge in central Florida (restricted to Polk and Highlands counties), and is one of the rarest plants in Florida. It is listed as federally endangered in the United States and state endangered in Florida. It is the sister species of '' Pseudoziziphus parryi'' (U.S. Southwest) comprising the only two species in the genus, which are wild relatives of the cultivated jujube ( ''Ziziphus jujuba''). Description Florida ziziphus is a small spiny shrub that is usually less than 2 meters tall. Clusters of highly fragrant tiny yellow-green flowers are borne in December - February, and grape-sized, yellow-orange fruit may develop in April - May (though they are very rare). It bears small, round, shiny leaves arranged alternately, which are deciduous in the winter dry season. The plant is highly clonal, able to produce numerous ramets from a single gene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Line
An overhead power line is a structure used in electric power transmission and Electric power distribution, distribution to transmit electrical energy along large distances. It consists of one or more electrical conductor, conductors (commonly multiples of three) suspended by Transmission tower, towers or Utility pole, poles. Since the surrounding air provides good cooling, electrical insulation, insulation along long passages, and allows optical inspection, overhead power lines are generally the lowest-cost method of power transmission for large quantities of electric energy. Construction Towers for support of the lines are made of wood (as-grown or laminated), steel or aluminum (either lattice structures or tubular poles), concrete, and occasionally reinforced plastics. The bare wire conductors on the line are generally made of aluminum (either plain or ACSR, reinforced with steel, or composite materials such as carbon and glass fiber), though some copper wires are used in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Laevis
''Quercus laevis'', the turkey oak, is a member of the red oak group of oaks. It is native to the southeastern United States. The name turkey oak derives from the resemblance of the leaves to a turkey's foot. A Turkish and southern European species '' Quercus cerris'' is also commonly referred to as Turkey oak, so ''Quercus laevis'' is sometimes referred to as American turkey oak to distinguish it from the European species. Description ''Quercus laevis'' is a small tree, sometimes shrubby, typically only tall, though occasionally reaching . The leaves are variable in size, mostly long but occasionally just or as much as long. They have 3–7 slender lobes, deeply incised between the lobes, each lobe with 1–3 bristle teeth at the tip. The leaves turn red in Autumn. The acorns are about long, and, like other red oaks, take 18 months to mature. Distribution and habitat Turkey oak occurs on the coastal plain from Virginia south to southwestern Florida, and west to so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Palustris
The longleaf pine (''Pinus palustris'') is a pine species native to the Southeastern United States, found along the coastal plain from East Texas to southern Virginia, extending into northern and central Florida. In this area it is also known as "yellow pine" or "long leaf yellow pine", although it is properly just one out of a number of species termed yellow pine. It reaches a height of and a diameter of . In the past, before extensive logging, they reportedly grew to with a diameter of . The tree is a cultural symbol of the Southern United States, being the official state tree of Alabama. This particular species is one of the eight pine tree species that falls under the "Pine" designation as the state tree of North Carolina. Description The bark is thick, reddish-brown, and scaly. The leaves are dark green and needle-like, and occur in bundles of mainly three, sometimes two or four, especially in seedlings. They often are twisted and in length. A local race of ''P. palu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florida Scrub
Florida scrub is a forest ecoregion found throughout Florida in the United States. It is found on coastal and inland sand ridges and is characterized by an evergreen Xerophyte, xeromorphic plant community dominated by shrubs and dwarf oaks. Because the low-nutrient sandy soils do not retain moisture, the ecosystem is effectively an arid one. Wildfires infrequently occur in the Florida scrub. Most of the annual rainfall (about ) falls in summer. The ecosystem is endangered by residential, commercial and agricultural development. The largest remaining block lies in and around the Ocala National Forest. Lake Wales Ridge National Wildlife Refuge also holds a high proportion of remaining scrub habitat, while the Archbold Biological Station near Lake Placid, Florida, Lake Placid contains about of scrub habitat and sponsors biological research on it. Definition Florida scrub is a community of Xerophyte, xeromorphic species living on poor, well-drained soil, including some combination o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Florida
Central Florida is a Regions of the United States#Florida, region of the U.S. state of Florida. Different sources give different definitions for the region, but as its name implies it is usually said to comprise the central part of the state, including the Tampa Bay area and the Greater Orlando, Greater Orlando area, though in recent times the Tampa Bay area has often been described as its own region, with "Central Florida" becoming more synonymous with the Orlando area (most notably, this is what the local news channels in each respective metro area call their region). It is one of Florida's three directional regions, along with North Florida and South Florida. Under the previously mentioned "usual" definition, it includes the following 13 counties: Brevard County, Florida, Brevard, Citrus County, Florida, Citrus, Hernando County, Florida, Hernando, Hillsborough County, Florida, Hillsborough, Lake County, Florida, Lake, Orange County, Florida, Orange, Osceola County, Florida, Os ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
