Encyclopedia: CYA...

Encyclopedia : C : CY : CYA (283 articles)

CYA
CYA can refer to: Internet slang for "see you"an acronym for "cover your ass"the Canadian Yachting Associationthe California Youth Authority, renamed California Division of Juvenile Justice in 2004 ..

Cyamelide
Cyamelide is an amorphous white solid (HNCO)x and is the polymerisation product of cyanic acid together with its cyclic trimer cyanuric acid. It is a porcelain-like white substance which is absolutely insoluble in water. References G. Fischer, J. Geith, T. Klapoetke, B. Krumm; Z. Naturforschung 57..

Cyamopsis
Cyamopsis is a genus of the family Fabaceae. Its species are distributed across Africa, Asia and the Pacific. ..

Cyan
This article is about the color. For other senses of this word see cyan (disambiguation). ..

Cyanamide
Cyanamide (CN2H2) is an amide of cyanogen, a white, crystalline compound. The term can also refer to a salt of this compound, having one or both of the hydrogen atoms replaced by another element or radical, such as in the most common case of calcium cyanamide (CaCN2), a compound used as a fertilizer..

Cyanate
The cyanate ion is an anion consisting of one oxygen atom, one carbon atom, and one nitrogen atom (OCN−), in that order, and possesses 1 unit of negative charge, borne mainly by the nitrogen atom. In organic compounds the cyanate group is a functional group. The cyanate ion is an ambident nucleop..

Cyane
In Greek mythology, Cyane was a nymph who tried to prevent Hades from abducting Persephone. Upon failure, she dissolved away in tears and melted into her pool. In the television show [[Xena:Warrior Princess]], Cyane is the name adopted by all queens of the Northern Amazons. The current Queen Cya..

Cyanea
Cyanea may be: A genus of Hawaiian plants (Hawaiian lobelioids) in the family CampanulaceaeA genus of jellyfish, such as the Lion's mane jellyfish, in the family Cyaneidaeredirect [[Template:Disambig]]..

Cyanea hardyi
Cyanea hardyi (Hawaiian hāhā) is a plant species in the Cyanea genus, family Campanulaceae, within the the Hawaiian lobelioids native to the island of Kauai, Hawaii. ..

Cyaneidae
Cyaneidae is a family of jellyfish. There are 14 species in this family. They are most commonly found in the southern part of the Atlantic Ocean. They are not known to be aggressive, though some attacks have occurred. Genera CyaneaDesmonemaDrymonema ..

Cyangugu
Cyangugu or Ciangugu was a province in south western Rwanda, lying at the southern end of Lake Kivu, east of Bukavu in the Democratic Republic of Congo. It is also the name of a town now found in the Western Province. The settlement has two main areas: Cyangugu itself is the lakeside resort, while..

Cyangugu, Rwanda
Cyangugu is a town located in south western Rwanda. The coordinates of the town are 2.48S, 28.90E. Its population in 2002 was approximately 19,900. ..

Cyanic acid
Cyanic acid is a colourless poisonous liquid with a boiling point of 23.5°C and a melting point of -81°C. At 0°C cyanic acid is converted to cyamelide. In water, cyanic acid hydrolyses to carbon dioxide and ammonia. Cyanic acid (H-N=C=O) is an isomer of fulminic acid (H-C=N-O). Two tautomers ..

Cyanide
A space-filling model of the cyanide ion A cyanide is any chemical compound that contains the cyano group -C≡N, with the carbon atom triple-bonded to the nitrogen atom. The CN group can be found in many kinds of compounds. Some are gases, others are solids or liquids. Some are salt-like,..

Cyanide and Happiness
This page has been deleted, and should not be re-created without a good reason. If you seek information about this subject, you may [ search for ] in other articles. If you are looking for a definition, you may [[Wiktionary:|look up ]] in Wiktionary, our sister dictionary project. To cont..

Cyanide fishing
Cyanide fishing is an illegal form of fishing common in South East Asia, which usually uses the chemical compound sodium cyanide - a close relation of potassium cyanide. Since 2000, increasing restrictions on illegal dynamite fishing have led to an increasing growth in this indiscriminate method –..

Cyanidin
Cyanidin, or flavan-3-ol, is a natural organic compound which is classified as a flavonoid and an anthocyanin. It is a pigment found in many redberries including but not limited to bilberry, blackberry, blueberry, cherry, cranberry, elderberry, hawthorn, loganberry and raspberry. It can also be f..

Cyanimide
Cyanimides are a group of chemical compounds sharing a common functional group with the general structure R1R2-N-CN. This group can be regarded as a secondary amine with a cyano substituent. References ↑ Bimetallic m-cyanoimide complexes prepared by NCN group transfer Daniel J. Mindiola, Yi..

Cyanine
Cyanine is a polymer hydroxide formula achieved in 1986 by the Universal Chemical Society. It is used as a dye for CD-R and DVD-R media. ..

Cyanoacrylate
A tube of Super glue Cyanoacrylate is the generic name for substances such as methyl-2-cyanoacrylate, which is typically sold under trademarks like Superglue and Krazy Glue, and 2-octyl cyanoacrylate, which is used in medical glues such as Dermabond and Traumaseal. Cyanoacrylate adhesives are..

Cyanobacteria
Cyanobacteria (Greek: κυανοs = blue) are a phylum (or "division") of Bacteria that obtain their energy through photosynthesis. They are often referred to as blue-green algae, even though it is now known that they are not algae. Nonetheless, the description is still sometimes used to reflect..

Cyanocarbon
A cyanocarbon is a member of a class of organic compounds formally derived from hydrocarbons by replacing every hydrogen atom with a cyanide radical, e.g. tetracyanomethane, C(CN)4. A cyanocarbon acid is a member of a class of strong organic acids, only known as their salts in which the negative ch..

Cyanocitta
The genus Cyanocitta is a New World genus of jays, passerine birds of the family Corvidae. Cyanocitta includes only two of the New World jays; they are blue, crested birds that differ in the colour of the head. Their ranges generally do not overlap. C. cristata, Blue JayC. stelleri, Steller's Jay..

Cyanocobalamin
Cyanocobalamin General Molecular formula C63H88CoN14O14P Molar mass 1355.37 g/mol [Chemical infoboxInfobox disclaimer and references] source [link] (all but the picture) The name vitamin B12 (or B12 for short) is used in two different ways. In a broader sense it ..

Cyanocorax
The tufted jays are a genus, Cyanocorax, of New World jays, passerine birds in the crow family Corvidae. It contains several closely related species and is dominant in Central and South America. The genus includes seventeen species: Black-chested Jay, Cyanocorax affinisPurplish-backed Jay, Cya..

Cyanogen
'''''' Chemical name ..

Cyanogen bromide
Cyanogen bromide is a chemical primarily used to 'activate' biopolymers, for example, polysaccharides (such as Sepharose, for use in chromatography columns), or protein materials (for immunoassays), for easy subsequent covalent coupling to other reagents under relatively mild conditions. CNBr reacts..

Cyanogen chloride
Cyanogen chloride Systematic name Chloroformonitrile Other names Chlorine cyanide Molecular formula CNCl Molar mass 61.46 g/mol CAS number [506-77-4] UN number 1589 Density 1.19 g/cm3 (liquid) Solubility (water) Soluble Melting point -6°C Boiling point..

Cyanohydrin
A cyanohydrin (or hydroxynitrile) is any of several compounds that contain both the cyanide and hydroxide groups. The formation of cyanohydrins is an important step in the synthesis of some carboxylic acids. Geminal cyanohydrins can be formed by reacting a ketone with hydrogen cyanide (HCN) and a sm..

Cyanohydrin reaction
A Cyanohydrin reaction is an organic reaction by an aldehyde or ketone with a cyanide anion or a nitrile to form a cyanohydrin. This nucleophilic addition is a reversible reaction but with aliphatic carbonyl compounds equilibrium is in favor of the reaction products. The cyanide source can be potas..

Cyanolichens
Cyanolichens are lichens that contain cyanobacteria, otherwise known as blue-green algae. Some lichens contain both green algae and cyanobacteria. In these cases, the cyanobacteria may be enclosed in cephalodia. These outgrowths of the main thallus can take many forms. The cyanobacteria which ..

Cyanolyca
Cyanolyca is a genus of jays including: Cyanolyca armillata Black-collared JayCyanolyca turcosa Turquoise JayCyanolyca viridicyana White-collared JayCyanolyca cucullata Azure-hooded JayCyanolyca pulchra Beautiful JayCyanolyca pumilo Black-throated JayCyanolyca nana Dwarf JayCyanolyca mirabilis Whi..

Cyanophycin
Cyanophycin, or multi-L-arginyl-poly(L-aspartic acid), is a non-protein, non-ribosomally produced amino acid polymer composed of an aspartic acid backbone and arginine side groups. Cyanophycin was first detected in 1887 by an italian scientist (Borzi, 1887) and can be found in most cyanobacteria a..

Cyanoramphus
Cyanoramphus is a genus of parakeets native to New Zealand and islands of the southern Pacific Ocean. The full list of Cyanoramphus species is: Yellow-crowned Parakeet C. auriceps (Kuhl, 1820)Orange-fronted Parakeet C. malherbi Souancé, 1857[Conservation statusConservation status:] Crit..

Cyanosis
Cyanosis refers to the bluish coloration of the skin due to the presence of deoxygenated hemoglobin in blood vessels near the skin surface. Contents 1 Types1.1 Central cyanosis1.2 Peripheral cyanosis2 See also3 External links Types It can occur in the fingers, includi..

Cyanotic
This article is about a band. For the medical condition, see cyanosis. Cyanotic is a Chicago-based industrial rock band that formed in 2002 and released its first full-length album in 2005. Cyanotic is known for its genre-blending work, which fuses traditional industrial beats and vocals with d..

Cyanotic heart defect
A cyanotic heart defect is a group-type of congenital heart defects. The patient appears blue (cyanotic), due to deoxygenated blood bypassing the lungs and entering the systemic circulation. This can be caused by right-to-left or bidirectional shunting, or malposition of the great arteries. Defect..

Cyanotoxin
A cyanotoxin is a toxin produced by certain cyanobacteria (blue-green algae). Examples Chemical structure of Anatoxin-a Anatoxin-a Chemical structure of Anatoxin-as Anatoxin-as Chemical structure of Aplysiatoxin Aplysiatoxin Chemical structure of Cylindro..

Cyanotrichite
Cyanotrichite is a copper aluminium sulfate mineral, Cu4Al2(OH)12SO4·2H2O, also known as lettsomite, very similar to halotrichite, and a member of the same group. However, it is much rarer. It forms velvety aggregates of extremely fine fibres and radial aggregates. It crystallizes in the orthorhomb..

Cyanotype
Cyanotype is an old monochrome photographic printing process which gives a cyan-blue print. The English scientist and astronomer Sir John Herschel discovered this procedure in 1842. Though Sir John Herschel is perhaps the inventor of the cyanotype process, it was Anna Atkins, a British scientist,..

Cyanuric acid
Cyanuric acid or 1,3,5-triazine-2,4,6-triol is an organic chemical compound with the chemical formula C3H3N3O3. Synonyms include 1,3,5-triazinetriol,s-triazinetriol, 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, s-triazinetrione, tricarbimide, isocyanuric acid, and pseudocyanuric acid. This triazine deriv..

Cyan (album)
Cyan is the tenth album by American rock band Three Dog Night, released in 1973 (see 1973 in music). Contents 1 Track listing2 Personnel3 Production4 Charts Track listing "Happy Song" (Allsup) - 3:37"Play Children Play" (Kent Sprague, Gary Stovall) - 4:10"Storybook Feeling" ..

Cyan (band)
Cyan is a progressive rock band original formed in 1984, but split up after a few gigs and one demo tape. In 1991 Rob Reed (Magenta, Trippa) received a letter from a French fan who had received the original demo from Nick Barrett (of Pendragon and a fan of the band) and was amazed that there was s..

Cyan (disambiguation)
Cyan can mean: Cyan, a color between green and blueThe Final Fantasy VI character Cyan GaramondeThe computer game company Cyan Worlds.Cyan is a character in the Norwegian comic strip Nemi This is a [disambiguationdisambiguation] page: a list of articles associated with the same title. If..

Cyan Garamonde
}" title="}}}" /> |caption= |series=Final Fantasy series |firstgame=Final Fantasy VI |artist=Yoshitaka Amano |inuniverse= }} Cyan Garamonde is a fictional character of the Square Co., Ltd.'s computer role-playing game Final Fantasy VI. Cyan hails from Doma, a country at war with Gestahl's Empire. ..

Cyan Worlds
Photo of Cyan Worlds Cyan Worlds, Inc. (formerly Cyan, Inc.) is a computer game company, founded by brothers Rand and Robyn Miller in 1988. After the release of Riven: The Sequel to Myst in 1997, Robyn left Cyan to pursue other interests (including the music CD, Ambo [link]). To clar..

Cyarubare
Cyarubare is a district (akarere) of the Rwandan province of Kibungo. Population: 67,184 (2002 figures); area: 405 square kilometers. References [statoids.com] ..

Cyathea
Cyathea is a genus of tree ferns, the type genus of the fern order Cyatheales. They are mostly terrestrial ferns, usually with a single tall stem. Rarely, the trunk may be branched or creeping. Many species also develop a fibrous mass of roots at the base of the trunk. The genus has a pantropical ..

Cyatheaceae
The Cyatheaceae is a family of fern that includes the world's tallest tree ferns, which reach heights up to 20 m. They are also very ancient plants, appearing in the fossil record in the late Jurassic, though the modern genera likely appeared in the Tertiary. All Cyatheaceae have scales instead o..

Cyatheales
The order Cyatheales is a taxonomic division of the fern subclass, Cyatheatae, which includes the tree ferns. In general, any fern that grows with a trunk elevating the fronds (leaves) above ground level can be called a tree fern. However, the plants formally known as tree ferns comprise a group ..

Cyathea abbottii
Cyathea abbottii is a species of tree fern native to Hispaniola, where it grows in shaded montane forest at an altitude of 700-1200 m. The trunk is erect and can grow up to 1.6 m in height and 5 cm in diameter. Fronds may reach 1.5 m in length and are pinnate. The rachis is brown and is covered in..

Cyathea acanthophora
Cyathea acanthophora is a species of tree fern endemic to Kinabalu National Park in Borneo, where it grows in montane rain forest at an altitude of 1250-2000 m. The trunk is erect and can grow as tall as 5 m or higher. Fronds are 2-3 m in length and bi- or tripinnate. The stipe is dark towards the..

Cyathea acrostichoides
Cyathea acrostichoides is a species of tree fern native to the Maluku Islands and western New Guinea, where it grows in forest and disturbed sites at an altitude of 650-1100 m. The trunk is erect and usually 1-3 m tall. Fronds are bipinnate and 1-2 m long. The stipe is slender and covered with spi..

Cyathea acuminata
Cyathea acuminata is a species of tree fern native to the islands of Panay and Samar in the Philippines. The trunk is erect and 1-4 m tall or more. Fronds are bi- or tripinnate and about 1 m in length. The stipe is covered with scattered scales and spines. The scales are flat and dull brown in col..

Cyathea affinis
Cyathea affinis is a variable species of tree fern native to Fiji, Samoa, the Cook Islands, Austral Islands, Tahiti, and the Marquesas Islands. The trunk is erect and 2-6 m tall. Fronds are bipinnate and 2-3 m in length. The rachis and stipe are pale to brown in colour, or flushed with red towards..

Cyathea albidosquamata
Cyathea albidosquamata is a species of tree fern native to the Maluku Islands and New Guinea, where it grows in rain forest and montane forest at an altitude of 1200-1500 m. The trunk is erect and about 2 m tall. Fronds are bi- or tripinnate and 1-1.5 m in length. The lower surface of the rachis i..

Cyathea alderwereltii
Cyathea alderwereltii is a species of tree fern endemic to Mount Sago in central Sumatra, where it is nevertheless abundant and grows in forest at an altitude of 1000-1500 m. It has an erect trunch which may be 4 m tall or more. Fronds are bi- or tripinnate and 1-2 m long. The stipe of this specie..

Cyathea alleniae
Cyathea alleniae is a species of tree fern native to the Malay Peninsula, where it grows in forest margin on steep ground at an altitude of approximately 1200 m. The trunk is erect, about 4 m tall and 15 cm in diameter. It is usually unbranched, but may branch to form several small crowns. Fronds ..

Cyathea alpicola
Cyathea alpicola is a species of tree fern native to central Sumatra, where it grows in montane rain forest at an altitude of 2000-2750 m. The erect trunk can reach 5 m or more in height. Fronds are bi- or tripinnate and usually 2-3 m long. They have a tendency to persist on the plant after wither..

Cyathea amboinensis
Cyathea amboinensis is a species of tree fern native to the Maluku Islands and possibly central and southern Sulawesi, where it grows in swamp and forest at low elevations. This species has an erect trunk, usually 2-4 m tall. Fronds are 1-2 m long and bi- or tripinnate. The stipe is warty near the..

Cyathea amintae
Cyathea amintae is a species of tree fern native to Puerto Rico, where it grows in shaded areas and cloud forest at an altitude of 1000-1200 m. The erect trunk may be 1.3 m tall and approximately 5 cm in diameter. Fronds are pinnate and up to 1.6 m long. The rachis is often purplish brown and cove..

Cyathea andersonii
Cyathea andersonii is a species of tree fern native to India, Bhutan and southern China, where it grows in moist valleys and montane forest at an altitude of 300-1200 m. The trunk is erect and 6-10 m tall. Fronds are bi- or tripinnate and 2-3 m long. The entire plant is relatively dark in appearan..

Cyathea aneitensis
Cyathea andersonii is a species of tree fern native to Vanuatu and possibly New Caledonia. This species has an erect trunk up to 3 m tall. Fronds are bipinnate and may reach 2 m in length. The rachis and stipe are either very dark and smooth or have a few scales towards the base of the stipe. The ..

Cyathea annae
Cyathea annae is a species of tree fern native to Ambon in the Maluku Islands, where it grows in forest from sea level to about 650 m. The erect trunk is slender and may be as tall as 3 m. Fronds are bipinnate and 1-2 m in length. Characteristically of this species, the final pair of pinnae are u..

Cyathea apiculata
Cyathea apiculata is a species of tree fern native to Sumatra, where it grows in montane rain forest at an altitude of about 1800 m. The trunk is erect and usually 5 m tall or more. Fronds are bi- or tripinnate and 2-3 m long. The stipe is pale, becoming darker towards the base. It is covered with..

Cyathea apoensis
Cyathea apoensis is a species of tree fern native to Mindanao, Negros and southern Luzon in the Philippines, where it grows in dense forest at an altitude of approximately 1800 m. The trunk is erect and 2-5 m tall. The rachis is dark and warty. The stipe is covered with scattered scales, which are..

Cyathea approximata
Cyathea approximata is a species of tree fern endemic to Madagascar. The trunk is erect, spiny and about 2 m tall. Fronds are bipinnate and usually 2 m long. They often form a crown of two whorls of about seven fronds each. Dark brown scales with a paler margin cover the stipe. Sori are round and ..

Cyathea archboldii
Cyathea archboldii is a species of tree fern native to New Guinea and Bougainville, where it is common in submontane rain forest at an altitude of 1000-3000 m. The trunk is erect and up to about 3 m tall. Fronds are bipinnate and 2-3 m long. The rachis may be purplish and has short spines and scal..

Cyathea ascendens
Cyathea ascendens is a species of tree fern native to northeastern New Guinea, where it grows in rain forest at an altitude of 800-1000 m. The erect trunk is slim and 1-2 m tall. Fronds are bi- or tripinnate and may be over 1 m in length. They form a distinctive open crown. The stipe is covered in..

Cyathea atropurpurea
Cyathea atropurpurea is a species of tree fern native to the islands of Luzon, Mindanao, Leyte and Mindanao in the Philippines, where it grows in forest at above 1000 m. The erect trunk is slender and may be up to 3 m tall. Fronds are bipinnateand 1-2 m long. Characteristically of this species, th..

Cyathea australis
Cyathea australis, also known as the Rough Tree Fern, is a species of tree fern native to southeastern Queensland, New South Wales and southern Victoria in Australia, as well as Tasmania and Norfolk Island. It grows in moist shady forest, both coastal and montane, at an altitude of up to 1280 m, o..

Cyathea baileyana
Cyathea baileyana, also known as the Wig Tree Fern, is a species of tree fern native to northeastern Queensland in Australia, where it grows in wet gullies and forest at an altitude of 850-1200 m. It is a rare species that is seldom found in the wild. The erect trunk is 4-5 m tall, approximately 1..

Cyathea balanocarpa
Cyathea balanocarpa is a species of tree fern native to Cuba, Jamaica and Hispaniola. Despite its wide distribution, little is known about this species. It is apparently of hybrid origin. References Braggins, John E. & Large, Mark F. 2004. Tree Ferns. Timber Press, Inc., p. 103. ISBN 0881926302&#..

Cyathea batjanensis
Cyathea batjanensis is a species of tree fern native to the Maluku Islands and western New Guinea, where it grows in rain forest at an altitude of approximately 600 m. The trunk is erect and 2-3 m tall. Fronds are bi- or tripinnate and 1-2 m long. The stipe is spiny, warty and covered with scatter..

Cyathea biformis
Cyathea biformis is a species of tree fern native to New Guinea and the Maluku Islands, where it grows against trees in mossy forest and rain forest at an altitude of 850-2200 m. The climbing trunk is very thin, only 1-2 cm in diameter, but can reach 3 m in height. The apex of the trunk is covered..

Cyathea borneensis
Cyathea borneensis is a species of tree fern native to southern parts of Thailand and Cambodia, as well as the Malay Peninsula and Borneo, where it grows in lowland forest at an altitude of 400-1100 m. The trunk is erect and usually up to 2 m tall or more. Fronds are bi- to tripinnate and 2-3 m lo..

Cyathea brevipinna
Cyathea brevipinna is a species of tree fern endemic to the higher parts of Mount Gower (875 m) on Lord Howe Island, where it grows in exposed areas at an altitude of about 790 m. The trunk is erect and may reach 3 m in height. It is often covered with reddish brown scales and stipe bases. This sp..

Cyathea brooksii
Cyathea brooksii is a species of tree fern native to Cuba, Hispaniola and Puerto Rico, where it grows on serpentine soils in shaded ravines, along streams, and on forested slopese at an altitude of 250-950 m. The trunk is prostrate and only about 6 cm in diameter. Fronds are pinnate or bipinnate a..

Cyathea brownii
Cyathea brownii, commonly known as the Norfolk Tree Fern or Smooth Tree Fern, is probably the largest tree fern species in the world. An endemic of Norfolk Island in the wild it is reported to reach 20 m or more in height. The broad, lance shaped, bipinnate-pinnatifid to tripinnate fronds can re..

Cyathea bryophila
Cyathea bryophila is a species of tree fern native to Puerto Rico, where it grows in the understory in wet montane and mossy forest at an altitude of 750-1200 m. The trunk is erect, up to 7 m tall and about 10 cm in diameter. Fronds are pinnate or bipinnate and grow to 2 m in length. The underside..

Cyathea buennemeijerii
Cyathea buennemeijerii is a species of tree fern endemic to the Natuna Islands in Indonesia, where it grows in open scrub at an altitude of about 600 m. This rare species is known only from the summits of two low hills. The trunk is erect and may be 5 m tall or more. Fronds are bi- or tripinnate a..

Cyathea callosa
Cyathea callosa is a species of tree fern endemic to Luzon in the Philippines, where it grows in midmontane forest. The trunk is erect and about 3 m tall or more. Fronds are bi- or tripinnate and 1-2 m long. The stipe is spiny and covered with scattered scales that are dark and have pale, fragile ..

Cyathea camerooniana
Cyathea camerooniana is a species of tree fern native to Sierra Leone, Cameroon, northern Angola and western Uganda, where it grows in montane forest at an altitude of 900-1200 m. The trunk is erect and 2-3 m tall. Fronds are pinnate and 2-3 m long. The rachis ranges in colour from dark to pale an..

Cyathea capensis
Cyathea capensis, also known as the Forest Tree Fern, is a widespread and highly variable species of tree fern. It is divided into two subspecies: C. c. capensis from the Old World Tropics and C. c. polypodioides from the New World Tropics. It is the only member of the family Cyatheaceae found in ..

Cyathea catillifera
Cyathea catillifera is a species of tree fern native to eastern New Guinea, where it grows in montane scrub at an altitude of about 2800 m and above. It is a rare plant, known only from the type locality. The erect trunk is up to about 1 m tall and 10 cm in diameter. Characteristically of this spe..

Cyathea caudata
Cyathea caudata is a species of tree fern native to the islands of Luzon and Mindanao in the Philippines, where it grows in montane forest. The trunk is erect and up to 4 m tall or more. Fronds are bi- or tripinnate and 1-2 m long. The stipe is warty and covered with dark, narrow, glossy scales. S..

Cyathea chinensis
Cyathea chinensis is a species of tree fern native to Yunnan in China, Sikkim in India, as well as Nepal, Myanmar, Laos and Vietnam. Plants grow in forest and montane forest at an altitude of 900-1800 m. The trunk is erect and 1-2 m tall. Fronds are bipinnate and 1-2 m long. The stipe is either lo..

Cyathea christii
Cyathea christii is a species of tree fern endemic to Mindanao in the Philippines, where it grows in forest at an altitude of 900-1800 m. The trunk is erect and may be 5 m tall or more. Fronds are bi- or tripinnate and 2-3 m long. The stipe is covered with some warts and narrow, brown scales. Sori..

Cyathea cincinnata
Cyathea cincinnata is a species of tree fern native to eastern New Guinea, where it grows at an altitude of 1300 m or higher. It is known only from a few collections in the Sepik region (East Sepik and West Sepik). The trunk is erect and short. Fronds are bi- or tripinnate and 1-1.5 m long. The st..

Cyathea cinerea
Cyathea cinerea is a species of tree fern endemic to Mindanao in the Philippines, where it grows in forest at an altitude of about 1000 m. The trunk is erect, up to 5 m tall and about 12 cm in diameter. Fronds are bi- or tripinnate and 1-2 m long. The stipe has long spines and scattered scale]s, w..

Cyathea coactilis
Cyathea coactilis is a rare species of tree fern known only from the southern highlands of Papua New Guinea, where it grows in alpine shrubland at an altitude of about 3000 m. The trunk is erect and 2-3 m tall. Fronds are bi- or tripinnate and usually 1-2 m long. Characteristically of this species..

Cyathea colensoi
Cyathea colensoi, also known as the Creeping Tree Fern, Mountain Tree Fern and Golden Tree Fern, is a species of tree fern native to New Zealand, from the southern part of the North Island south to Stewart Island. It grows in submontane to montane forest in damp areas, particularly near the tree-l..

Cyathea cooperi
Cyathea cooperi, also known as the Australian Tree Fern, Lacy Tree Fern, Scaly Tree Fern, or Cooper’s Tree Fern, is a medium-to-large, fast growing tree fern native to Australia. This fern grows to 15 m in height with a 30 cm thick trunk. The apex of the trunk and unfurling crosiers are particul..

Cyathea corcovadensis
Cyathea corcovadensis is a species of tree fern native to Paraguay and Serra do Mar in southern Brazil, where it grows in primary and secondary forest, as well as scrub, at an altitude of 250-2100 m. The erect trunk is short, usually about 30-60 cm tall. Fronds are bipinnate and 2.5 m or more in l..

Cyathea costalisora
Cyathea costalisora is a species of tree fern native to western New Guinea, where it grows on the edges of forest and in moist hollows at an altitude of 1900-3225 m. The trunk is erect, up to 4 m tall and may branch near the base. Fronds are bi- or tripinnate and 1-1.5 m long. The stipe is warty, ..

Cyathea costulisora
Cyathea costulisora is a species of tree fern native to Sumatra. The trunk is erect and usually 1-4 m tall. Fronds are bi- or tripinnate and 1-2 m long. The stipe is covered with warts and scales. The scales are either pale and glossy or dark and flat. Sori occur near the fertile pinnule midvein a..

Cyathea crassa
Cyathea crassa is a species of tree fern endemic to the Santo Domingo area in the Dominican Republic. Little is known about this rare tree fern. C. crassa is part of the Cyathea woodwardioides complex from the Greater Antilles together with five other species: Cyathea fulgens, Cyathea grevilleana..

Cyathea croftii
Cyathea croftii is a species of tree fern endemic to Manus Island in the Admiralty Islands, where it grows in damp forest on steep slopes at an altitude of about 500 m. It is relatively uncommon in the wild. The trunk is erect, up to 3 m tall and about 6 cm in diameter. Fronds bi- or tripinnate an..

Cyathea cucullifera
Cyathea cucullifera is a species of tree fern native to eastern New Guinea, where it grows in montane forest at an altitude of about 2400 m. The trunk is erect and 2-3 m tall. Fronds are bi- or tripinnate and 2-3 m long. Characteristically of this species, they occur in two whorls of four to six f..

Cyathea cunninghamii
Cyathea cunninghamii, also known as the Gully Tree Fern and Slender Tree Fern, is a species of tree fern native to Victoria, New South Wales, southeastern Queensland and Tasmania in Australia, as well as North Island, South Island and Chatham Island in New Zealand (and possibly New Caledonia also)..

Cyathea cuspidata
Cyathea cuspidata is a widespread species of tree fern native to Central and South America, where it grows in tropical rain forest up to the montane zone, as well as in open sites, on riverbanks and cleared pastureland at an altitude of 0-800 m. Its natural distribution covers Mexico, Guatemala, B..

Cyathea deckenii
Cyathea deckenii is a species of tree fern native to the Democratic Republic of the Congo, Tanzania and Mozambique, where it grows in wet forest at an altitude of 1350-2300 m. The trunk is erect and up to 10 m tall. Fronds are bipinnate and 2-3 m long. Characteristically of this species, the most ..

Cyathea decora
Cyathea decora is a species of tree fern native to Ecuador and possibly other parts of western South America. Little is known about this species and it is the source of some taxonomic confusion. References [The International Plant Names Index: Cyathea decora] ..

Cyathea decrescens
Cyathea decrescens is a species of tree fern endemic to Madagascar. The trunk is erect, 2-3 m tall and 10-12 cm in diameter. It usually has characteristic elliptical scars caused by fallen stipe bases. Fronds are bipinnate and 1-1.5 m long. The fronds may be densely pubescent and the lower pinnule..

Cyathea dicksonioides
Cyathea dicksonioides is a species of tree fern native to northeastern New Guinea, where it grows in grassland at an altitude of 2600-2900 m. It is a relatively uncommon species. The erect trunk may be 3 m tall or more and about 20 cm in diameter. Fronds are bi- or tripinnate and approximately 1 m..

Cyathea dimorpha
Cyathea dimorpha is a species of tree fern native to central and southeastern Sulawesi, where it grows at an altitude of 120-1700 m. The trunk is erect and 3-4 m tall. Fronds are pinnate to bipinnate and up to 2 m long. Fertile pinnules are rediced in size. The stipe is short and bears basal scale..

Cyathea doctersii
Cyathea doctersii is a species of tree fern endemic to Sumatra, where it grows in forest at an altitude of approximately 150 m. The trunk is erect and 2-3 m tall. Fronds are bi- or tripinnate and 2-3 m long. The stipe is covered with scattered flat, brown scales and some hairs. Sori occur near the..

Cyathea dregei
Cyathea dregei, also known as the Common Tree Fern and Gewone Boomvaring in Afrikaans, is a widespread species of tree fern native to Swaziland, Lesotho, Zimbabwe, Mozambique, Madagascar and South Africa from the Western Cape province to KwaZulu-Natal and Mpumalanga. It grows on stream banks, in f..

Cyathea edanoi
Cyathea edanoi is a species of tree fern endemic to Luzon in the Philippines, where it grows in montane forest at an altitude of about 1300 m. The trunk is erect and 1-2 m tall. Fronds are bi- or tripinnate and approximately 1 m long. The stipe is covered in dark, glossy scales that have narrow, f..

Cyathea elongata
Cyathea elongata is a species of tree fern native to Venezuela and Colombia, where it grows in montane areas at an altitude of 2000-3000 m. The trunk is erect and up to 11 m tall. Fronds are pinnate and usually 2-3 m long. The rachis and stipe are brown, may be smooth to warty and have basal tan s..

Cyathea erinacea
Cyathea erinacea is a species of tree fern native to Mexico, Costa Rica, Panama, Venezuela, Colombia, Ecuador, Peru and Bolivia. It grows in tropical rain forest, particularly in the understory, and on riverbanks up to the montane zone at an altitude of about 800-2100 m. The erect trunk is up to 1..

Cyathea eriophora
Cyathea eriophora is a species of tree fern native to eastern New Guinea, where it grows in wet ravine forest at an altitude of 1400-2000 m. The trunk is erect and 2-3 m tall. Fronds are bi- or tripinnate and 2-3 m long. The stipe is dark and covered with spines and scales. The scales are variable..

Cyathea esmeraldensis
Cyathea esmeraldensis is a species of tree fern native to the western Andes of Ecuador, where it grows on the sides of rocky streambeds at an altitude of 500-1000 m. The erect, slender trunk is about 80 cm tall and approximately 3 cm in diameter. Fronds may be either simply pinnate or bipinnate ba..

Cyathea everta
Cyathea everta is a species of tree fern native to western New Guinea, where it grows in the edges of forest or in mossy forest at an altitude of 1400-2800 m. The trunk is erect and up to 5 m tall. Fronds are bi- or tripinnate and 1-1.5 m long. Numerous fronds are present at any one time and form ..

Cyathea excavata
Cyathea excavata is a species of tree fern endemic to the Cameron Highlands in Peninsular Malaysia, where it grows in habitats ranging from forest, streamsides, clearings and open grassy areas at an altitude of approximately 1800 m. The trunk is erect and up to 2 m tall or more. It forms lateral s..

Cyathea exilis
Cyathea exilis is a species of tree fern endemic to the Cape York Peninsula in Queensland, Australia, where it grows in vine forest on a substrate of sandstone. It is a rare plant known only from one location, specifically by a stream in Mann Creek in the William Thompson Range. In its natural hab..

Cyathea fadenii
Cyathea exilis is a species of tree fern endemic to the Uluguru Mountains in Tanzania, where it grows on exposed ridges and on the upper edge of montane forest at an altitude of 1700-2100 m. The trunk is erect, up to 4 m tall and 3-5 cm in diameter. Fronds are bipinnate. Characteristically of this..

Cyathea fenicis
Cyathea fenicis is a species of tree fern native the Philippines and Taiwan, where it grows in wet forest, forest margins and on hillsides. The trunk is erect, up to 1 m tall and about 6 cm in diameter. Fronds are tripinnate and 1.5-2 m long. Characteristically of this species, the lowest pinnae a..

Cyathea ferruginea
Cyathea ferruginea is a species of tree fern native to the the islands of Negros, Palawan and Balabac, where it grows in mossy forest up to an altitude of about 1200 m. The trunk is erect and 2-4 m tall. Fronds are bi- or tripinnate and up to 1 m in length. The stipe bears short spines and sparse ..

Cyathea foersteri
Cyathea foersteri is a species of tree fern native to eastern New Guinea, where it grows in scrub in forest margins and mossy forest at an altitude of 1600-2800 m. The trunk is erect and up to 10 m tall. Fronds may be bi- or tripinnate and 2-2.5 m long. Usually around nine or ten live fronds are p..

Cyathea fulgens
Cyathea fulgens is a species of tree fern native to Cuba, Jamaica and Hispaniola. It forms part of the complex centered around Cyathea woodwardioides comprising six very similar taxa from the Greater Antilles. The other five species are Cyathea crassa, Cyathea grevilleana, Cyathea portoricensis an..

Cyathea fuliginosa
Cyathea fuliginosa is a species of tree fern native to the islands of Luzon, Biliran and Mindanao in the Philippines, where it grows in forest at an altitude of 640-2400 m. This tree fern has an erect trunk up to 5 m tall or more. Fronds are bi- or tripinnate and 1-3 m in length. The stipe is wart..

Cyathea geluensis
Cyathea geluensis is a species of tree fern native to central and eastern New Guinea as well as the Louisiade Archipelago, where it grows in mossy forest. In New Guinea itself, plants grow at an altitude of 1000-2000 m, however they are present at lower elevations of 700-900 m on associated island..

Cyathea gigantea
Cyathea gigantea is a species of tree fern native to northeastern to southern India, Sri Lanka, Nepal to Myanmar, Thailand, Laos, Vietnam, the Malay Peninsula, as well as central Sumatra and western Java. It grows in moist open areas at an altitude of 600-1000 m. The trunk of this species is erect..

Cyathea recommutata
Cyathea recommutata is a species of tree fern native to the Malay Peninsula, central and southern Sumatra and Borneo, where it grows in acidic peaty or sandy soils in wet forest, as well as swamp forest, from sea level to an altitude of 1500 m. The trunk is erect and rarely taller than 3 m. Fronds..

Cyathea squamulata
Cyathea squamulata is a species of tree fern native the Malay Peninsula, Sumatra, Java, Borneo and the southern Philippines, including the Sulu Archipelago, where it grows in forest from the lowlands to an altitude of about 1500 m. The trunk is erect and up to 2 m tall. Fronds are pinnate or bipin..

Cyathea × dryopteroides
Cyathea × dryopteroides is a tree fern native to Puerto Rico, where it grows at an altitude of 1000-1200 m. It is now known to be of hybrid origin between Cyathea amintae and Cyathea bryophila. References Braggins, John E. & Large, Mark F. 2004. Tree Ferns. Timber Press, Inc., p. 127. ISBN 08819..

Cyatholipidae
The Cyatholipidae are a spider family with 58 described species in 23 genera. They were discovered in the late 1800's in Africa. Cyatholipidae live mostly in moist, montane forests. Certain species, such as Scharffia rossi, however, live in dry regions, such as savannah. Most members of this fam..

Cyaxares
Hvakhshathra or Cyaxares or Kayxosrew (r. 625 - 585 BC) was the most capable king of Media (Iran). He reorganized and modernized the Median Army, then joined with King Nabopolassar of Babylon. This alliance was formalized through the marriage of Cyaxares daughter, Amytis with Nabopolassar's son, Ne..

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