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Aspidotis Meifolia
''Aspidotis'' is a small genus of leptosporangiate ferns known commonly as laceferns. Most species are native to slopes, ridges, and rocky outcroppings, primarily in California and Mexico, although one species included in the genus by some authorities is widely distributed in eastern Africa. Description Members of ''Aspidotis'' are small ferns, with shiny, tufted fronds generally less than 35 centimeters long (although ''A. schimperi'' may be larger). Fertile leaves have false indusia formed by the leaves' inrolled margins, which partially conceal the spore-bearing sori. Taxonomy The taxonomy of laceferns has been considerably refined since they were first described in the late 1800s. Species currently placed in ''Aspidotis'' were originally assigned to a section of '' Hypolepis'', then to '' Cheilanthes''. David Lellinger established ''Aspidotis'' as a distinct genus based on characteristic features of its false indusia and its leaves, including their shiny surface, altho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspidotis Densa
''Aspidotis densa'' is a species of fern in the Cheilanthoid subfamily, known by the common name Indian's dream or Serpentine fern or dense lace fern. It is native to the west coast of North America from British Columbia to California and east to the Rocky Mountains in Idaho, Montana, and Wyoming; there is a disjunct population on serpentine soils in Quebec. Hitchcock, C.L. and Cronquist, A. 2018. Flora of the Pacific Northwest, 2nd Edition, p. 55. University of Washington Press, Seattle. Description This fern has leaves on long wiry brown to black petioles (stem below the leaf), with the leaf blade occupying less than half of the total length of the leaf when including the petiole. The leaves emerge from a short creeping rhizome covered with firm narrow scales. Where the petiole joins the leaf, the stem color grades to green and acquires a groove on its adaxial (top) surface. The leaf blades are medium to dark green, sometimes with a glaucous or bluish cast. The leaf blade is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspidotis Californica
''Aspidotis californica'' is a species of fern known by the common name California lacefern. It is native to California and Baja California. It grows in rock cracks and crevices in many types of habitat, including Chaparral, Yellow pine forest Ponderosa pine forest is a plant association and plant community dominated by ponderosa pine and found in western North America. It is found from the Rocky Mountains to the Pacific Coast Ranges in the Western United States and Western Canada. In ..., Foothill oak woodland, and Valley grassland. Description ''Aspidotis californica'' has leaves that are thin and dissected into many triangular leaflets which are subdivided into small segments with curled teeth. The leaf segments bear sori containing sporangia, with the edges of the leaves rolled under to create a false indusium over the sori. References External linksCalflora Database: ''Aspidotis californica'' (California lace fern) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greek Language
Greek ( el, label=Modern Greek, Ελληνικά, Elliniká, ; grc, Ἑλληνική, Hellēnikḗ) is an independent branch of the Indo-European family of languages, native to Greece, Cyprus, southern Italy (Calabria and Salento), southern Albania, and other regions of the Balkans, the Black Sea coast, Asia Minor, and the Eastern Mediterranean. It has the longest documented history of any Indo-European language, spanning at least 3,400 years of written records. Its writing system is the Greek alphabet, which has been used for approximately 2,800 years; previously, Greek was recorded in writing systems such as Linear B and the Cypriot syllabary. The alphabet arose from the Phoenician script and was in turn the basis of the Latin, Cyrillic, Armenian, Coptic, Gothic, and many other writing systems. The Greek language holds a very important place in the history of the Western world. Beginning with the epics of Homer, ancient Greek literature includes many works of lasting impo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultramafic
Ultramafic rocks (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals (dark colored, high magnesium and iron content). The Earth's mantle is composed of ultramafic rocks. Ultrabasic is a more inclusive term that includes igneous rocks with low silica content that may not be extremely enriched in Fe and Mg, such as carbonatites and ultrapotassic igneous rocks. Intrusive ultramafic rocks Intrusive ultramafic rocks are often found in large, layered ultramafic intrusions where differentiated rock types often occur in layers. Such cumulate rock types do not represent the chemistry of the magma from which they crystallized. The ultramafic intrusives include the dunites, peridotites and pyroxenites. Other rare varieties include troctolite which has a greater percenta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edaphic
Edaphology (from Greek , ''edaphos'', "ground",, ''-logia'') is concerned with the influence of soils on living beings, particularly plants. It is one of two main divisions of soil science, the other being pedology. Edaphology includes the study of how soil influences humankind's use of land for plant growth as well as people's overall use of the land. General subfields within edaphology are agricultural soil science (known by the term agrology in some regions) and environmental soil science. (Pedology deals with pedogenesis, soil morphology, and soil classification.) In Russia, edaphology is considered equivalent to pedology, but is recognized to have an applied sense consistent with agrophysics and agrochemistry outside Russia. History Xenophon (431–355 BC), and Cato (234–149 BC), were early edaphologists. Xenophon noted the beneficial effect of turning a cover crop into the earth. Cato wrote De Agri Cultura ("On Farming") which recommended tillage, crop rotatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disjunct Distribution
In biology, a taxon with a disjunct distribution is one that has two or more groups that are related but considerably separated from each other geographically. The causes are varied and might demonstrate either the expansion or contraction of a species' range. Range fragmentation Also called range fragmentation, disjunct distributions may be caused by changes in the environment, such as mountain building and continental drift or rising sea levels; it may also be due to an organism expanding its range into new areas, by such means as rafting, or other animals transporting an organism to a new location (plant seeds consumed by birds and animals can be moved to new locations during bird or animal migrations, and those seeds can be deposited in new locations in fecal matter). Other conditions that can produce disjunct distributions include: flooding, or changes in wind, stream, and current flows, plus others such as anthropogenic introduction of alien introduced species either acciden ... [...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] |
Chaparral
Chaparral ( ) is a shrubland plant community and geographical feature found primarily in the U.S. state of California, in southern Oregon, and in the northern portion of the Baja California Peninsula in Mexico. It is shaped by a Mediterranean climate (mild wet winters and hot dry summers) and infrequent, high-intensity crown fires. Chaparral features summer-drought-tolerant plants with hard sclerophyllous evergreen leaves, as contrasted with the associated soft-leaved, drought-deciduous, scrub community of coastal sage scrub, found often on drier, southern facing slopes within the chaparral biome. Three other closely related chaparral shrubland systems occur in central Arizona, western Texas, and along the eastern side of central Mexico's mountain chains (mexical), all having summer rains in contrast to the Mediterranean climate of other chaparral formations. Chaparral comprises 9% of California's wildland vegetation and contains 20% of its plant species. The name comes from th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asparagus Setaceus
''Asparagus setaceus'', commonly known as common asparagus fern, asparagus grass, lace fern, climbing asparagus, or ferny asparagus, is a climbing plant in the genus ''Asparagus''. Despite its common name, the plant is not a true fern, but has leaves that resemble one. Naming Originally described by the German botanist Carl Sigismund Kunth, its Latin specific epithet ''setaceus'' means "hairy". Description ''Asparagus setaceus'' is a scrambling perennial herb with tough green stems and leaves, which may reach several metres in length. The leaves are actually leaf-like cladodes up to 7 mm long by 0.1 mm in diameter, which arise in clumps of up to 15 from the stem, making a fine, soft green fern-like foliage. Sharp barbed thorns occur on the stem. Occurring from spring to autumn, the small greenish-white bell-shaped flowers are 0.4 cm long, and are followed by small green berries, which blacken with maturity. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order (biology)
Order ( la, wikt:ordo#Latin, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between Family_(biology), family and Class_(biology), class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microlepia Strigosa
''Microlepia strigosa'', known as hay-scented fern, lace fern, rigid lace fern and palapalai, is a fern A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except t ... indigenous to the Hawaiian islands and is also native to other parts of the tropics and subtropics including India and Malaysia. This fern belongs to a group of about seventy '' Microlepia'' species in the bracken or hay-scented fern family ( Dennstaedtiaceae). There are two indigenous species and a hybrid found in the main Hawaiian Islands. It is also known by the botanical names: ''Davallia hirta'', ''Davallia setosa'', ''Davallia strigosa'', ''Dicksonia kaulfussiana'', ''Dicksonia strigosa'', ''Microlepia hirta'', ''Microlepia setosa'', ''Stenoloma tenuifolium'', ''Trichomanes strigosum''. It has coarse, light to medium green ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspidotis Schimperi
''Aspidotis'' is a small genus of leptosporangiate ferns known commonly as laceferns. Most species are native to slopes, ridges, and rocky outcroppings, primarily in California and Mexico, although one species included in the genus by some authorities is widely distributed in eastern Africa. Description Members of ''Aspidotis'' are small ferns, with shiny, tufted fronds generally less than 35 centimeters long (although ''A. schimperi'' may be larger). Fertile leaves have false indusia formed by the leaves' inrolled margins, which partially conceal the spore-bearing sori. Taxonomy The taxonomy of laceferns has been considerably refined since they were first described in the late 1800s. Species currently placed in ''Aspidotis'' were originally assigned to a section of '' Hypolepis'', then to '' Cheilanthes''. David Lellinger established ''Aspidotis'' as a distinct genus based on characteristic features of its false indusia and its leaves, including their shiny surface, altho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
