Deltoid pinnae

The Boston fern (Nephrolepis exaltata) is a spreading plant is often grown in hanging baskets or similar conditions. The leaflets are in a clearly alternate pattern. The fonds of the fern may be three feet long and span six inches, each pinnae being about three inches. (Pinnae are the small "leaflets" on either side of the midrib.) The pinnae are generally deltoid, as seen in the picture to the right. The pinnate vein pattern is also visible on these highly compound leaves. The edges appear slightly serrate. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Divisions Green algae Land plants (embryophytes) Non-vascular embryophytes Hepatophyta - liverworts Anthocerophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Seedless vascular plants Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants... Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern, or pteridophyte, is any one of a group of some twenty thousand species of plants classified in the Division Pteridophyta, formerly known as Filicophyta. ... Subclasses Subclass: Cyatheatae Subclass: Schizaeatae Subclass: Pteriditae Subclass: Polypoditae The Pteridopsida is a class of plants in the Division Pteridophyta that includes the modern ferns. ... Families Dryopteridaceae Elaphoglossaceae Lomariopsidaceae The Dryopteridales are wood ferns and sword ferns. ... Genera Arachniodes Bolbitis Ctenitis Cyrtomium Dryopteris Phanerophlebia Polystichum Rumohra The Dryopteridaceae includes many ferns prized as ornamentals, including the wood ferns, holly ferns, florists fern, and others. ... In biology, binomial nomenclature is a standard convention used for naming species. ... Divisions Green algae Land plants (embryophytes) Non-vascular embryophytes Hepatophyta - liverworts Anthocerophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Seedless vascular plants Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants... In botany, a leaf is an above-ground plant organ specialized for photosynthesis. ... Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern, or pteridophyte, is any one of a group of some twenty thousand species of plants classified in the Division Pteridophyta, formerly known as Filicophyta. ...

Life cycle and hardiness

The Boston fern is a perennial in the USDA hardiness zones 9 through 11. Although the fern may appear totally dead due to frost, it will re-emerge in the spring. In general, the Boston Fern likes damp, but not soggy soil that is rich in nutrients. Of the common cultivated ferns, the Boston Fern is the most tolerant to drought. The fern thrives best in humid conditions, so when grown as a house plant it becomes necessary to mist the plant when relative humidity falls below around 80%. Although outdoors this plant prefers partial shade or full shade, inside it grows best in bright filtered light. This plant is usually propagated by division of the rooted runners, as the varieties will not come from true spores. A Red Valerian, a perennial plant. ... The U.S. Department of Agriculture, also called the Agriculture Department, or USDA, is a Cabinet department of the United States Federal Government. ... Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern, or pteridophyte, is any one of a group of some twenty thousand species of plants classified in the Division Pteridophyta, formerly known as Filicophyta. ... For the heavy metal band see Soil (band) Soil is the layer of minerals and organic matter, in thickness from centimetres to a metre or more, on the land surface. ... A drought is an extended period where water availability falls below the statistical requirements for a region. ... A houseplant is a plant that one grows in a dwelling, such as a house or office. ... The term spore has several different meanings in biology. ...

It is a common in humid forests and swamps, especially in Florida, South America, Mexico, Central America, the West Indies, Polynesia and Africa. This is due to the wind carrying the spores. Some specific cultivars have established themselves in Florida. Forest - Wikipedia /**/ @import /skins/monobook/IE50Fixes. ... A freshwater swamp swamp (disambiguation) A swamp is a wetland that features permanent inundation of large areas of land by shallow bodies of water, generally with a substantial number of hummocks, or dry-land protrusions. ... State nickname: Everglade State, Sunshine State Other U.S. States Capital Tallahassee Largest city Jacksonville Governor Jeb Bush Official languages English Area 170,451 km² (22nd)  - Land 137,374 km²  - Water 30,486 km² (17. ... South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ... Central America is the region of North America located between the southern border of Mexico and the northwest border of Colombia, in South America. ... The Caribbean or the West Indies is a group of islands in the Caribbean Sea. ... Polynesia (from Greek, poly = many and nesi = island) is a large grouping of over 1,000 islands in the central and southern Pacific Ocean. ... A satellite composite image of Africa Africa is the worlds second-largest continent in both area and population, after Asia. ... A cultivar is a cultivated variety of a plant species. ...

Background information

The first fossil records of ferns date back to the early Carboniferous era. By the Triassic period, there is the first evidence of ferns related to several modern families. During the Cretaceous, many modern families of ferns first appeared. Ever since recorded history began, and probably before, people have found pieces of rock and other hard material with indentations from the remains of dead organisms. ... The Carboniferous is a major division of the geologic timescale that extends from the end of the Devonian period, about 340 million years ago (mya), to the beginning of the Permian period, about 280 mya. ... The Triassic is a Geologic period that extends from about 248 to 202 million years (My or megayears) before the present. ... The Cretaceous period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic period (about 135 mya) to the beginning of the Paleocene epoch of the Tertiary period (65 mya). ...

Classification

Ferns have traditionally been grouped in the class Filices, but some modern classifications assign them their own division in the plant kingdom, known as Pteridophyta. Variety: Bostoniensis Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern, or pteridophyte, is any one of a group of some twenty thousand species of plants classified in the Division Pteridophyta, formerly known as Filicophyta. ...

*This variety of fern has been clasified under the Davalliaceae, Polypodiaceae, and Oleandraceae families by various authorities.

External links

• http://www.floridata.com/ref/N/neph_exa.cfm