Def Leppard: …it was the metal classic Pyromania (1983), with hits such as “Photograph” and “Rock of Ages” and sales of more than 10 million copies, that assured the group’s place in rock history.

pyromania, impulse-control disorder characterized by the recurrent compulsion to set fires. The term refers only to the setting of fires for sexual or other gratification provided by the fire itself, not to arson for profit or revenge. Pyromania is usually a symptom of underlying psychopathology,

pyrometallurgy, extraction and purification of metals by processes involving the application of heat. The most important operations are roasting, smelting, and refining. Roasting, or heating in air without fusion, transforms sulfide ores into oxides, the sulfur escaping as sulfur dioxide, a gas.

rock: Rock types: …to meteorite impact events and pyrometamorphism taking place near burning coal seams ignited by lightning strikes.

pyrometer, device for measuring relatively high temperatures, such as are encountered in furnaces. Most pyrometers work by measuring radiation from the body whose temperature is to be measured. Radiation devices have the advantage of not having to touch the material being measured. Optical

pyromorphite, a phosphate mineral, lead chloride phosphate, [Pb5(PO4)3Cl], that is a minor ore of lead. It occurs with galena, cerussite, and limonite in the oxidized zone of lead deposits, where it forms very brightly coloured, heavy, barrel-shaped crystals or globular masses. For properties, see

mouse: General features: At one extreme are the spiny-furred species in the subgenus Pyromys, whose upperparts and undersides are covered with flat, channeled spines nestled in soft underfur (juveniles are not spiny). At the other extreme are the shrew-mice from Sumatra (M. crociduroides) and Java (M. vulcani), whose soft, short, and dense coat…

cup fungus: …name for two genera (Pyronema and Anthracobia) of the order that grow on burned wood or steamed soil.

pyrope, magnesium aluminum garnet (Mg3Al2), the transparent form of which is used as a gemstone. Its colour varies from brownish red to purplish red. A beautiful, deep-red pyrope is often called ruby, in combination with the locality of occurrence, as Cape ruby from South Africa. It is also used in

organometallic compound: Reduction: …spontaneously flammable in air (pyrophoric). Accordingly, techniques have been developed to handle these and other pyrophoric compounds. Glass reaction vessels sealed from the atmosphere and purged with nitrogen gas are commonly used for handling air-sensitive organometallic compounds in the laboratory. Large quantities of pyrophoric compounds such as Al2(C2H5)6 are…

click beetle: Major genera and species: The genus Pyrophorus, which occurs in the tropical areas of the Western Hemisphere, is bioluminescent, giving off a greenish and red-orange light. Several of these species can provide light sufficient for reading, and they have even been used as emergency light sources during surgery.

metabolism: Formation of fatty acyl coenzyme A molecules: …most tissues contain highly active pyrophosphatase enzymes [21a], which catalyze the virtually irreversible hydrolysis of inorganic pyrophosphate (PPi) to two molecules of inorganic phosphate (Pi), reaction [21] proceeds overwhelmingly to completion—i.e., from left to right.

isoprenoid: Tail-to-tail coupling of isoprenoids: …enzymatic reaction patterns of the pyrophosphate units (see below Biosynthesis of isoprenoids). Tail-to-tail coupling does not appear to follow expected reaction patterns. Squalene, which has the most notable example of tail-to-tail coupling, is formed by the joining of two equivalents of farnesyl pyrophosphate. In the 1960s the British chemist John…

pyrophyllite, very soft, pale-coloured silicate mineral, hydrated aluminum silicate, Al2(OH)2 Si4O10, that is the main constituent of some schistose rocks. The most extensive commercial deposits are in North Carolina, but pyrophyllite is also mined in California, China, India, Thailand, Japan,

coast redwood: Physical description: Coast redwoods are exceptionally fire-adapted. In August 2020, stands of the trees were burned in various wildfires in northern and central California, including a famous grove of old-growth trees in Big Basin State Park. Although some individuals were lost, most were expected to survive, owing to their ability to…

coast redwood: Physical description: Coast redwoods are exceptionally fire-adapted. In August 2020, stands of the trees were burned in various wildfires in northern and central California, including a famous grove of old-growth trees in Big Basin State Park. Although some individuals were lost, most were expected to survive, owing to their ability to…

pyruvic acid, (CH3COCOOH), is an organic acid that probably occurs in all living cells. It ionizes to give a hydrogen ion and an anion, termed pyruvate. Biochemists use the terms pyruvate and pyruvic acid almost interchangeably. Pyruvic acid is a key product at the crossroads between the catabolism

Claude-François-Dorothée, marquis de Jouffroy d’Abbans: …River near Lyon in his Pyroscaphe, the first really successful steamboat.

sorosilicate, any member of a group of compounds with structures that have two silicate tetrahedrons (each consisting of a central silicon atom surrounded by four oxygen atoms at the corners of a tetrahedron) linked together. Because one oxygen atom is shared by two tetrahedrons, the chemical

bioluminescence: The range and variety of bioluminescent organisms: The genus Pyrosoma includes several species that account for the brilliant luminescence among macroplanktons of the seas, giving rise to the name “fire body.” Pyrosoma is a floating colonial form, pelagic and translucent. The colonies usually reach a length of 3 to 10 cm (about 1 to…

tunicate: Annotated classification: Order Pyrosomida Zooids embedded in a tube open at one end. Order Doliolida Complex alternation of generations between a solitary, asexually and sexually reproducing gonozooid and colonial, asexually reproducing oozooids; gill with several to many stigmata. Order Salpida

tunicate: Annotated classification: Order Pyrosomida Zooids embedded in a tube open at one end. Order Doliolida Complex alternation of generations between a solitary, asexually and sexually reproducing gonozooid and colonial, asexually reproducing oozooids; gill with several to many stigmata. Order Salpida

arsenic: Commercial production and uses: …used in bronzing and in pyrotechnics.Very highly purified arsenic finds applications in semiconductor technology, where it is used with silicon and germanium, as well as in the form of gallium arsenide, GaAs, for diodes, lasers, and transistors.

pyroxene, any of a group of important rock-forming silicate minerals of variable composition, among which calcium-, magnesium-, and iron-rich varieties predominate. Pyroxenes are the most significant and abundant group of rock-forming ferromagnesian silicates. They are found in almost every variety

pyroxene: Chemical composition: …join is known as the pyroxene quadrilateral. Ferrous iron and magnesium substitute freely since they have similar ionic sizes and identical charges. Complete substitution exists between enstatite (Mg2Si2O6) and ferrosilite (Fe2Si2O6), and complete solid solution of iron for magnesium exists between diopside (CaMgSi2O6) and

metamorphic rock: Pyroxene-hornfels facies: Rocks of the pyroxene-hornfels facies are characteristically formed near larger granitic (granite) or gabbroic (gabbro) bodies at depths of a few kilometres or at pressures of a few hundred bars. The mineral assemblages are again largely anhydrous, but, unlike the

pyroxenite, dark-coloured, intrusive igneous rock that consists chiefly of pyroxene. Pyroxenites are not abundant; they occur in discrete inclusions, in layered sills (tabular bodies inserted between other rocks) and lopoliths (laccoliths with basin-shaped bases), in branching veins, in narrow

nitrocellulose: Chronology of development and use: …composition eventually found use as collodion, employed through the 19th century as a photographic carrier and antiseptic wound sealant.

Deucalion: …in Thessaly, and husband of Pyrrha; he was also the father of Hellen, the mythical ancestor of the Hellenic race.

tiger moth: Major genera and species: A typical arctiid, the Isabella tiger moth (Pyrrharctia isabella), emerges in spring and attains a wingspan of 37 to 50 mm (1.5 to 2 inches). Black spots mark its abdomen and yellow wings. The larva, known as the banded woolly bear, is brown in the middle and black at…

prosody: Syllable-stress metres: …spondaic foot (′ ′) and pyrrhic foot (˘˘) into their scansions; however, spondees and pyrrhics occur only as substitutions for other feet, never as determinants of a metrical pattern:

Pyrrhic victory, a success that brings such significant harm to the victor that it differs little from defeat. Although the triumphant party in a Pyrrhic victory is considered the overall winner, the costs incurred and their future repercussions diminish the sense of genuine success. It is

ancient Rome: The Pyrrhic War, 280–275 bc: Rome spent the 280s bc putting down unrest in northern Italy, but its attention was soon directed to the far south as well by a quarrel between the Greek city of Thurii and a Samnite tribe. Thurii called upon the assistance…

Western dance: Dance in Classical Greece: …flourished in Greece was the pyrrhichē, a weapon dance. Practiced in Sparta as part of military training, it was a basis for the claim of the philosopher Socrates that the best dancer is also the best warrior. Other choral dances that came to Athens from Crete include two dedicated to…

Pyrrhon Of Elis was a Greek philosopher from whom Pyrrhonism takes its name; he is generally accepted as the father of Skepticism. Pyrrhon was a pupil of Anaxarchus of Abdera and in about 330 established himself as a teacher at Elis. Believing that equal arguments can be offered on both sides of

chough: …Isles to China, and the alpine chough (P. graculus), of high mountains from Morocco and Spain to the Himalayas. Both are about 38 cm (15 inches) long and glossy blue-black; the former is red-billed, the latter yellow-billed. These choughs are gregarious, have whistling calls, and are aerial acrobats. In the…

chough: …Corvidae (order Passeriformes) are the common chough (Pyrrhocorax pyrrhocorax), of sea cliffs and rocky uplands from the British Isles to China, and the alpine chough (P. graculus), of high mountains from Morocco and Spain to the Himalayas. Both are about 38 cm (15 inches) long and glossy blue-black; the former…

red bug, any insect of the family Pyrrhocoridae (order Heteroptera), which contains more than 300 species. The red bug—a fairly common, gregarious, plant-feeding insect found mostly in the tropics and subtropics—is oval in shape and brightly coloured with red. It ranges in length from 8 to 18 mm

red bug, any insect of the family Pyrrhocoridae (order Heteroptera), which contains more than 300 species. The red bug—a fairly common, gregarious, plant-feeding insect found mostly in the tropics and subtropics—is oval in shape and brightly coloured with red. It ranges in length from 8 to 18 mm

Pyrrhon Of Elis was a Greek philosopher from whom Pyrrhonism takes its name; he is generally accepted as the father of Skepticism. Pyrrhon was a pupil of Anaxarchus of Abdera and in about 330 established himself as a teacher at Elis. Believing that equal arguments can be offered on both sides of

Aenesidemus: In his Pyrrhonian Discourses, Aenesidemus formulated 10 tropes in defense of Skepticism, four suggesting arguments that arise from the nature of the perceiver, two dealing with the thing perceived, and four concerning the relationship between the perceiver and the thing perceived.

Pyrrhonism, philosophy of Skepticism derived from Pyrrho of Elis (c. 370–c. 272 bce), generally regarded as the founder of ancient Skepticism. He identified as wise men those who suspend judgment (practice epochē) and take no part in the controversy regarding the possibility of certain knowledge.

Pyrrhonism, philosophy of Skepticism derived from Pyrrho of Elis (c. 370–c. 272 bce), generally regarded as the founder of ancient Skepticism. He identified as wise men those who suspend judgment (practice epochē) and take no part in the controversy regarding the possibility of certain knowledge.

dinoflagellate, (division Dinoflagellata), any of numerous one-celled aquatic organisms bearing two dissimilar flagella and having characteristics of both plants and animals. Most are marine, though some live in freshwater habitats. The group is an important component of phytoplankton in all but

pyrrhotite, iron sulfide mineral (Fe1–xS) in the niccolite group; in it, the ratio of iron to sulfur atoms is variable but is usually slightly less than one. It commonly is found with pentlandite and other sulfides in silica-poor igneous rocks, as at Kongsberg, Nor.; Andreas-Berg, Ger.; Trentino,

cardinal: The desert cardinal (C. sinuatus) is common to the thorn scrub of the American Southwest. Less showy than the northern cardinal, this gray bird with a red mask is also called pyrrhuloxia (formerly part of the bird’s scientific name, combining the Latin name for the bullfinch…

Neoptolemus, in Greek legend, the son of Achilles, the hero of the Greek army at Troy, and of Deïdamia, daughter of King Lycomedes of Scyros; he was sometimes called Pyrrhus, meaning “Red-haired.” In the last year of the Trojan War the Greek hero Odysseus brought him to Troy after the Trojan seer

Pyrrhus was the king of Hellenistic Epirus whose costly military successes against Macedonia and Rome gave rise to the phrase “Pyrrhic victory.” His Memoirs and books on the art of war were quoted and praised by many ancient authors, including Cicero. Upon becoming ruler at the age of 12, Pyrrhus

owl: General features: …birds; others, such as the Palau owl (Pyrroglaux podargina) and the Seychelles owl (Otus insularis), are endemic island species with small populations. Owls often attain higher population densities than hawks and have survived better in areas of human activity. Their nocturnal habits and inconspicuous daytime behaviour provide them some protection…

pyrrole, any of a class of organic compounds of the heterocyclic series characterized by a ring structure composed of four carbon atoms and one nitrogen atom. The simplest member of the pyrrole family is pyrrole itself, a compound with molecular formula C4H5N. The pyrrole ring system is present in

heterocyclic compound: Comparison with carbocyclic compounds: …atom of nitrogen, the compound pyrrolidine, a chemical relative of pyrrole, is produced. The structural formula of pyrrolidine is written:

dinoflagellate, (division Dinoflagellata), any of numerous one-celled aquatic organisms bearing two dissimilar flagella and having characteristics of both plants and animals. Most are marine, though some live in freshwater habitats. The group is an important component of phytoplankton in all but

dinoflagellate, (division Dinoflagellata), any of numerous one-celled aquatic organisms bearing two dissimilar flagella and having characteristics of both plants and animals. Most are marine, though some live in freshwater habitats. The group is an important component of phytoplankton in all but

Santalaceae: Major genera and species: …oil, or buffalo, nut (Pyrularia pubera), the oil-filled pear-shaped fruit of a North American parasite, are other commonly known members of the family.

pear, (genus Pyrus), genus of some 20–45 trees and shrubs in the rose family (Rosaceae), including the common pear (Pyrus communis). One of the most important fruit trees in the world, the common pear is cultivated in all temperate-zone countries of both hemispheres. The fruit is commonly eaten

pear: …rose family (Rosaceae), including the common pear (Pyrus communis). One of the most important fruit trees in the world, the common pear is cultivated in all temperate-zone countries of both hemispheres. The fruit is commonly eaten fresh or is canned. It is also used to produce perry, an alcoholic beverage.…

carboxylic acid: Hydroxy and keto acids: …the form of its salt pyruvate) is involved in the normal metabolism of carbohydrates as the final product of a series of some 11 or 12 steps starting from glucose or fructose. It is then converted (by loss of carbon dioxide) to acetyl coenzyme A, which enters the tricarboxylic acid…

metabolism: The oxidation of pyruvate: … and coenzymes collectively called the pyruvate dehydrogenase complex; i.e., a multienzyme complex in which the substrates are passed consecutively from one enzyme to the next, and the product of the reaction catalyzed by the first enzyme immediately becomes the substrate for the second enzyme in the complex. The overall reaction…

metabolism: The formation of ATP: …PEP to ADP, catalyzed by pyruvate kinase [10], is also highly exergonic and is thus virtually irreversible under physiological conditions.

pyruvic acid, (CH3COCOOH), is an organic acid that probably occurs in all living cells. It ionizes to give a hydrogen ion and an anion, termed pyruvate. Biochemists use the terms pyruvate and pyruvic acid almost interchangeably. Pyruvic acid is a key product at the crossroads between the catabolism

Pyryatyn, city, east-central Ukraine, on the Uday River. Pyryatyn dates at least from 1155, when it is first documented, and was incorporated in 1781. Before the Russian Revolution of 1917, it was an administrative centre and later became a railway junction. Its varied industries have produced such

heterocyclic compound: Six-membered rings with one heteroatom: Positively charged ions (cations) of pyrylium and thiopyrylium are the parent six-membered, aromatic, monocyclic oxygen and sulfur compounds of their respective groups.

Pyshma River, river in Sverdlovsk and Tyumen oblasti, Russia, a right-bank tributary of the Tura River, part of the Ob River basin. The Pyshma drains a basin of approximately 7,600 square miles (19,700 square km). The river rises on the eastern slopes of the central Ural Mountains, just north of

Pyshma River, river in Sverdlovsk and Tyumen oblasti, Russia, a right-bank tributary of the Tura River, part of the Ob River basin. The Pyshma drains a basin of approximately 7,600 square miles (19,700 square km). The river rises on the eastern slopes of the central Ural Mountains, just north of

Pythagoras was a Greek philosopher, mathematician, and founder of the Pythagorean brotherhood that, although religious in nature, formulated principles that influenced the thought of Plato and Aristotle and contributed to the development of mathematics and Western rational philosophy. (For a fuller

Pythagoras was a noted Greek sculptor of Rhegium (present-day Reggio di Calabria, Italy), a contemporary of Myron and Polyclitus and their rival in making statues of athletes. One of those, that of the boxer Euthymus of Locri, was erected after the latter’s third victory at Olympia in 472 bce.

veganism, the theory or practice of abstaining from the consumption and use of animal products. While some vegans avoid only animal-derived food, many others also exclude any items that use animals as ingredients or for testing. These prohibited products can range from clothing (e.g., leather) to

comma: …which is audible, is the Pythagorean comma.

vegetarianism, the theory or practice of living solely upon vegetables, fruits, grains, legumes, and nuts—with or without the addition of milk products and eggs—generally for ethical, ascetic, environmental, or nutritional reasons. All forms of flesh (meat, fowl, and seafood) are excluded from all

number game: Pythagorean triples: The study of Pythagorean triples as well as the general theorem of Pythagoras leads to many unexpected byways in mathematics. A Pythagorean triple is formed by the measures of the sides of an integral right triangle—i.e., any set of three positive integers such…

South Asian arts: Qualities of the scales: …found in the ancient Greek Pythagorean scale. Thus, if in a mode the consonance ri-pa (E–A) were needed, one would tune to the madhyamagrama scale. But, if the consonance sa-pa (D–A) were important, it could be obtained with the sadjagrama tuning. There was a further development in this system caused…

Pythagorean theorem, the well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic notation, a2 + b2 = c2. Although the theorem has long been associated with Greek

mathematics: Geometric and algebraic problems: (Such solutions are sometimes called Pythagorean triples.) A tablet in the Columbia University Collection presents a list of 15 such triples (decimal equivalents are shown in parentheses at the right; the gaps in the expressions for h, b, and d separate the place values in the sexagesimal numerals):

tuning and temperament: Classic tuning systems: …in the Middle Ages, one, Pythagorean tuning, makes all the fifths perfectly consonant. As a result, all the major thirds and major sixths are sharp (too wide) by 22 cents (a cent is 1/1200 of an octave) or by the ratio of 81:80. This amount is called a comma of…

Pythagoreanism, philosophical school and religious brotherhood, believed to have been founded by Pythagoras of Samos, who settled in Croton in southern Italy about 525 bce. The character of the original Pythagoreanism is controversial, and the conglomeration of disparate features that it displayed

Pytheas was a navigator, geographer, astronomer, and the first Greek to visit and describe the British Isles and the Atlantic coast of Europe. Though his principal work, On the Ocean, is lost, something is known of his ventures through the Greek historian Polybius (c. 200–c. 118 bc). Sailing from

ecstasy: The Pythia (priestess) of the oracle at Delphi often went into an ecstatic state during which she uttered sounds revealed to her by the Greek god Apollo. Her “words” were then interpreted by a priest to help a suppliant find a way to avoid calamities, especially…

fungus: Annotated classification: Order Pythiales Pathogenic in plants, algae, and fungi, some are saprotrophic in soil or water; hyphae may grow within or between cells of plants, causing root rot; example genera include Pythium, Phytophthora, and Pythiogeton. Order Rhipidiales Aquatic, saprotrophic, often found in

Pythian Games, in ancient Greece, various athletic and musical competitions held in honour of Apollo, chiefly those at Delphi. The musicians’ contest there dated from very early times. In 582 bc it was made quadrennial, and athletic events including foot and chariot races were added in emulation of

Coleoptera: Annotated classification: …temperate region; example Pyrochroa Family Pythidae Few species widely distributed in Eurasia and America; example Pytho. Family Ripiphoridae (wedge-shaped beetles) About 400 species, many with specialized parasitic habits on other insects; complicated life cycle; examples Pelecotoma, Metoecus.

Pythium: insidiosum causes pythiosis, a rare and deadly tropical disease found in dogs, horses, humans, and certain other mammals.

Pythium, genus of destructive root parasites of the family Pythiaceae (phylum Oomycota, kingdom Chromista). Pythium species have filamentous sporangia, smooth-walled spherical oogonia, and stalked antheridia. Several are often responsible for serious diseases in plants, such as damping-off and rot.

Pythium: P. insidiosum causes pythiosis, a rare and deadly tropical disease found in dogs, horses, humans, and certain other mammals.

Priene: Built by Pythius, probable architect of the Mausoleum of Halicarnassus, the temple was recognized in ancient times as the classic example of the pure Ionic style. Priene is laid out on a grid plan, with 6 main streets running east-west and 15 streets crossing at right angles,…

ecstasy: The Pythia (priestess) of the oracle at Delphi often went into an ecstatic state during which she uttered sounds revealed to her by the Greek god Apollo. Her “words” were then interpreted by a priest to help a suppliant find a way to avoid calamities, especially…

Python, general-purpose high-level computer programming language valued for its English-like syntax and powerful built-in data analysis and data science functions and libraries. Dutch programmer Guido van Rossum developed Python in 1991 after expressing frustration with the limitations of the

Python, in Greek mythology, a huge serpent that was killed by the god Apollo at Delphi either because it would not let him found his oracle, being accustomed itself to giving oracles, or because it had persecuted Apollo’s mother, Leto, during her pregnancy. In the earliest account, the Homeric Hymn

python, any of about 40 species of snakes, all but one of which are found in the Old World tropics and subtropics. Most are large, with the reticulated python (Malayopython reticulatus) of Asia being the longest, with the largest adults measuring 7–8 meters (23–26.2 feet) in length, but there are

tactical weapons system: Air-to-air systems: …Israeli missile system, known as Python 3, is said to have shot down 50 Syrian aircraft in the invasion of Lebanon in 1982. When that system detects an airplane within range, it lights an indicator lamp and sounds a warning in the cockpit of the aircraft carrying the missile. The…

Burmese python, (Python bivittatus), species of constrictor snake that is native to various environments in southern and Southeast Asia, including several islands in Indonesia, and is known for its exceptional size and its environmental adaptability. Burmese pythons inhabit mangrove forests,

python: Old world pythons: sebae), India (P. molurus), Southeast Asia and Java (P. bivittatus), New Guinea (L. papuanus), and Australia (L. amethistinus) regularly exceed 3 metres (10 feet). Despite their large size, some of these species survive in urban and suburban areas, where their secretive habits and recognized value as…

Burmese python, (Python bivittatus), species of constrictor snake that is native to various environments in southern and Southeast Asia, including several islands in Indonesia, and is known for its exceptional size and its environmental adaptability. Burmese pythons inhabit mangrove forests,

reticulated python, (Malayopython reticulatus), species of giant constricting snake belonging to the python family, Pythonidae, and known for being the longest living snake in the world, with the largest recorded individual measuring 10 meters (32.8 feet) in length. The reticulated python inhabits

python: Old world pythons: …metre, but some pythons of Africa (P. sebae), India (P. molurus), Southeast Asia and Java (P. bivittatus), New Guinea (L. papuanus), and Australia (L. amethistinus) regularly exceed 3 metres (10 feet). Despite their large size, some of these species survive in urban and suburban areas, where their secretive habits and…

Louise Erdrich: Birchbark Books and other literary works: …she published the short-story collection Python’s Kiss, which features illustrations by her daughter Aza Erdrich Abe.

Myanmar: The Pyu state: Between the 1st century bce and the 9th century ce, speakers of Tibeto-Burman languages known as the Pyu established city-kingdoms in Myanmar at Binnaka, Mongamo, Shri Kshetra, and Halingyi. At the time, a long-standing trade route between China and India passed through northern…

pyx, in Christianity, vessel containing the consecrated bread used in the service of Holy Communion. Although pyxes were made in various shapes, such as that of a dove, the most common form was that of a small cylindrical box fitted with a cover, which is generally conical. An English pyx dating

African bullfrog, (Pyxicephalus adspersus), species of large frog (family Pyxicephalidae) that is found mainly in Southern Africa. African bullfrogs live in many different habitats, including grasslands, shrublands, freshwater lakes, marshes, and farmland. The animals are sometimes kept as pets.

fungus: Annotated classification: Order Pyxidiophorales Ectoparasitic on mandibulate arthropods, may be mycoparasitic; mycelial; anamorphs lack vesiculate conidiophores; example genus includes Pyxidiophora. Class Lecanoromycetes Forms lichens; thick ascal apex with narrow canal; includes subclasses Acarosporomycetidae, Lecanoromycetidae, and Ostropomycetidae; contains 10

African bullfrog, (Pyxicephalus adspersus), species of large frog (family Pyxicephalidae) that is found mainly in Southern Africa. African bullfrogs live in many different habitats, including grasslands, shrublands, freshwater lakes, marshes, and farmland. The animals are sometimes kept as pets.