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Dracoglossum
''Dracoglossum'' is a small genus of ferns in the family Lomariopsidaceae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). It is native to the Neotropics of the Americas. Taxonomy ''Dracoglossum'' was originally treated in ''Tectaria'', but is not related and was therefore placed in the family Dryopteridaceae. It appears to be most closely related to the genus '' Lomariopsis''.Maarten J.M. Christenhusz. 2007. "''Dracoglossum'', a new Neotropical fern genus (Pteridophyta)". ''Thaiszia Journal of Botany'' 17:1-10. (See ''External links'' below). Molecular evidence has confirmed this placement and it is now firmly placed in family Lomariopsidaceae, with which it shares characters of habit and stelar structure. Species , the ''Checklist of Ferns and Lycophytes of the World'' and ''Plants of the World Online'' recognized two species: *'' Dracoglossum plantagineum'' (Jacq.) Christenh. — Central America, the Lesser Antilles, Puerto Rico, and sub-Ande ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dracoglossum Sinuatum
''Dracoglossum'' is a small genus of ferns in the family Lomariopsidaceae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). It is native to the Neotropics of the Americas. Taxonomy ''Dracoglossum'' was originally treated in ''Tectaria'', but is not related and was therefore placed in the family Dryopteridaceae. It appears to be most closely related to the genus ''Lomariopsis''.Maarten J.M. Christenhusz. 2007. "''Dracoglossum'', a new Neotropical fern genus (Pteridophyta)". ''Thaiszia Journal of Botany'' 17:1-10. (See ''External links'' below). Molecular evidence has confirmed this placement and it is now firmly placed in family Lomariopsidaceae, with which it shares characters of habit and stelar structure. Species , the ''Checklist of Ferns and Lycophytes of the World'' and ''Plants of the World Online'' recognized two species: *'' Dracoglossum plantagineum'' (Jacq.) Christenh. — Central America, the Lesser Antilles, Puerto Rico, and sub-Andea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dracoglossum Plantagineum
''Dracoglossum'' is a small genus of ferns in the family Lomariopsidaceae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). It is native to the Neotropics of the Americas. Taxonomy ''Dracoglossum'' was originally treated in ''Tectaria'', but is not related and was therefore placed in the family Dryopteridaceae. It appears to be most closely related to the genus ''Lomariopsis''.Maarten J.M. Christenhusz. 2007. "''Dracoglossum'', a new Neotropical fern genus (Pteridophyta)". ''Thaiszia Journal of Botany'' 17:1-10. (See ''External links'' below). Molecular evidence has confirmed this placement and it is now firmly placed in family Lomariopsidaceae, with which it shares characters of habit and stelar structure. Species , the ''Checklist of Ferns and Lycophytes of the World'' and ''Plants of the World Online'' recognized two species: *'' Dracoglossum plantagineum'' (Jacq.) Christenh. — Central America, the Lesser Antilles, Puerto Rico, and sub-Andea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lomariopsidaceae
The Lomariopsidaceae is a family of ferns with a largely tropical distribution. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Polypodiineae (eupolypods I) of the order Polypodiales. Alternatively, it may be treated as the subfamily Lomariopsidoideae of a very broadly defined family Polypodiaceae ''sensu lato''. Genera The Pteridophyte Phylogeny Group classification of 2016 (PPG I) included four genera. ''Dryopolystichum'' was added in 2017, and ''Thysanosoria'' is now included in ''Lomariopsis'', so that four genera are recognized : *'' Cyclopeltis'' J.Sm. *'' Dracoglossum'' Christenh. *'' Dryopolystichum'' Copel. *'' Lomariopsis'' Fée (including ''Thysanosoria'') The genus '' Nephrolepis'' has also been placed in this family, but it is now placed in its own family, Nephrolepidaceae. Some members of the Lomariopsidaceae are cultivated as ornamental plants. Phylogeny The following cladogram for the suborder Poly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lesser Antilles
The Lesser Antilles ( es, link=no, Antillas Menores; french: link=no, Petites Antilles; pap, Antias Menor; nl, Kleine Antillen) are a group of islands in the Caribbean Sea. Most of them are part of a long, partially volcanic island arc between the Greater Antilles to the north-west and the continent of South America."West Indies." ''Merriam-Webster's Geographical Dictionary'', 3rd ed. 2001. () Springfield, MA: Merriam-Webster Inc., p. 1298. The islands of the Lesser Antilles form the eastern boundary of the Caribbean Sea where it meets the Atlantic Ocean. Together, the Lesser Antilles and the Greater Antilles make up the Antilles. (Somewhat confusingly, the word Caribbean is sometimes used to refer only to the Antilles, and sometimes used to refer to a much larger region.) The Lesser and Greater Antilles, together with the Lucayan Archipelago, are collectively known as the West Indies. History after European arrival The Spanish were the first Europeans to arrive on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vegetative Reproduction
Vegetative reproduction (also known as vegetative propagation, vegetative multiplication or cloning) is any form of asexual reproduction occurring in plants in which a new plant grows from a fragment or cutting of the parent plant or specialized reproductive structures, which are sometimes called vegetative propagules. Many plants naturally reproduce this way, but it can also be induced artificially. Horticulturists have developed asexual propagation techniques that use vegetative propagules to replicate plants. Success rates and difficulty of propagation vary greatly. Monocotyledons typically lack a vascular cambium, making them more challenging to propagate. Background Plant propagation is the process of plant reproduction of a species or cultivar, and it can be sexual or asexual. It can happen through the use of vegetative parts of the plants, such as leaves, stems, and roots to produce new plants or through growth from specialized vegetative plant parts. While m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaf
A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the shoot system. In most leaves, the primary photosynthetic tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of ''Eucalyptus'', palisade mesophyll is present on both sides and the leaves are said to be isobilateral. Most leaves are flattened and have distinct upper (adaxial) and lower ( abaxial) surfaces that differ in color, hairiness, the number of stomata (pores that intake and output gases), the amount and structure of epicuticular wax and other features. Leaves are mostly green in color due to the presence of a compound called chlorophyll that is essential for photosynthesis as it absorbs light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhizome
In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow horizontally. The rhizome also retains the ability to allow new shoots to grow upwards. A rhizome is the main stem of the plant that runs underground horizontally. A stolon is similar to a rhizome, but a stolon sprouts from an existing stem, has long internodes, and generates new shoots at the end, such as in the strawberry plant. In general, rhizomes have short internodes, send out roots from the bottom of the nodes, and generate new upward-growing shoots from the top of the nodes. A stem tuber is a thickened part of a rhizome or stolon that has been enlarged for use as a storage organ. In general, a tuber is high in starch, e.g. the potato, which is a modified stolon. The term "tuber" is often used imprecisely and is sometimes applied to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sorus
A sorus (pl. sori) is a cluster of sporangia (structures producing and containing spores) in ferns and fungi. A coenosorus (plural coenosori) is a compound sorus composed of multiple, fused sori. Etymology This New Latin word is from Ancient Greek σωρός (''sōrós'' 'stack, pile, heap'). Structure In lichens and other fungi, the sorus is surrounded by an external layer. In some red algae, it may take the form of depression into the thallus. In ferns, the sori form a yellowish or brownish mass on the edge or underside of a fertile frond. In some species, they are protected during development by a scale or film of tissue called the indusium, which forms an umbrella-like cover. Lifecycle significance Sori occur on the sporophyte generation, the sporangia within producing haploid meiospores. As the sporangia mature, the indusium shrivels so that spore release is unimpeded. The sporangia then burst and release the spores. As an aid to identification The shape, arrangemen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indusium
A sorus (pl. sori) is a cluster of sporangia (structures producing and containing spores) in ferns and fungi. A coenosorus (plural coenosori) is a compound sorus composed of multiple, fused sori. Etymology This New Latin word is from Ancient Greek σωρός (''sōrós'' 'stack, pile, heap'). Structure In lichens and other fungi, the sorus is surrounded by an external layer. In some red algae, it may take the form of depression into the thallus. In ferns, the sori form a yellowish or brownish mass on the edge or underside of a fertile frond. In some species, they are protected during development by a scale or film of tissue called the indusium, which forms an umbrella-like cover. Lifecycle significance Sori occur on the sporophyte generation, the sporangia within producing haploid meio spores. As the sporangia mature, the indusium shrivels so that spore release is unimpeded. The sporangia then burst and release the spores. As an aid to identification The shape, arran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecuador
Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ''Ekuatur Nunka''), is a country in northwestern South America, bordered by Colombia on the north, Peru on the east and south, and the Pacific Ocean on the west. Ecuador also includes the Galápagos Islands in the Pacific, about west of the mainland. The country's capital and largest city is Quito. The territories of modern-day Ecuador were once home to a variety of Indigenous groups that were gradually incorporated into the Inca Empire during the 15th century. The territory was colonized by Spain during the 16th century, achieving independence in 1820 as part of Gran Colombia, from which it emerged as its own sovereign state in 1830. The legacy of both empires is reflected in Ecuador's ethnically diverse population, with most of its mill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guianas
The Guianas, sometimes called by the Spanish loan-word ''Guayanas'' (''Las Guayanas''), is a region in north-eastern South America which includes the following three territories: * French Guiana, an overseas department and region of France * Guyana, formerly known as British Guiana from 1831 until 1966, after the colonies of Berbice, Essequibo, and Demerara, taken from the Netherlands in 1814, were merged into a single colony * Suriname, formerly Dutch Guiana, until 1814 together with Berbice, Essequibo and Demerara In the wider context, the Guianas also includes the following two territories: * Guayana Region in eastern Venezuela ( Amazonas, Bolívar, and Delta Amacuro states), formerly the Guayana Province, alternatively known as Spanish Guayana * State of Amapá in northern Brazil, known as Portuguese Guiana (or Brazilian Guiana) History Pre-colonial period Before the arrival of European colonials, the Guianas were populated by scattered bands of native Arawak peop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southern subregion of a single continent called America. South America is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie to the northwest. The continent generally includes twelve sovereign states: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela; two dependent territories: the Falkland Islands and South Georgia and the South Sandwich Islands; and one internal territory: French Guiana. In addition, the ABC islands of the Kingdom of the Netherlands, Ascension Island (dependency of Saint Helena, Ascension and Tristan da Cunha, a British Overseas Territory), Bouvet Island ( dependency of Norway), Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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