cardiovascular disease: Therapy: …of obtaining a donor heart, left ventricular assist devices have been developed to increase patient survival while awaiting a transplant. These devices work by taking part of the blood from the left ventricle and mechanically pumping it into the arterial circulation. This mechanical assistance reduces the amount of work required…

Lviv, city, western Ukraine, on the Roztochchya Upland. Founded in the mid-13th century by Prince Daniel Romanovich of Galicia, Lviv has historically been the chief centre of Galicia, a region now divided between Ukraine and Poland. Its position controlling east-west routes and passes across the

LVMH, multinational conglomerate headquartered in Paris that is the largest luxury goods group in the world. LVMH owns 75 luxury brands, including Louis Vuitton, Christian Dior, and Tiffany & Co. It is the only group whose subsidiaries span all five sectors of the luxury goods market: wines and

LVMH, multinational conglomerate headquartered in Paris that is the largest luxury goods group in the world. LVMH owns 75 luxury brands, including Louis Vuitton, Christian Dior, and Tiffany & Co. It is the only group whose subsidiaries span all five sectors of the luxury goods market: wines and

Lviv, city, western Ukraine, on the Roztochchya Upland. Founded in the mid-13th century by Prince Daniel Romanovich of Galicia, Lviv has historically been the chief centre of Galicia, a region now divided between Ukraine and Poland. Its position controlling east-west routes and passes across the

Georgy Yevgenyevich, Prince Lvov was a Russian social reformer and statesman who was the first head of the Russian provisional government established during the February Revolution (1917). An aristocrat who held a degree in law from the University of Moscow, Lvov worked in the civil service until

amphibious vehicle: The LVT resembled a tank, whereas the DUKW moved on rubber tires ashore and was propeller-driven when afloat. Each began its operational life as little more than a floating truck. The rigours of combat demonstrated the need for armour plating, however, and the LVT, with the…

lwa, the primary spirits of Vodou. They are akin to the orishas of Yoruba religion and of similar Afro-Caribbean new religious movements, but, unlike the orishas, the lwa are not deities but are spirits, whether of human or divine origin, that were created by Bondye (God) to assist the living in

Martyrs of Uganda: Charles Lwanga, Mukasa’s successor, then secretly baptized those boys who had only been catechumens. The following day they were herded away to the village of Namugongo. Three of them—Pontian Ngondwe, a soldier, and the royal servants Athanasius Bazzekuketta and Gonzaga Gonza—were murdered en route. All…

Luvale, Bantu-speaking people of northwestern Zambia and southeastern Angola. In terms of history, language, material culture, and religion, the Luvale are closely related to the Lunda and Ndembu to the northeast, who extend northward into southern Congo (Kinshasa). They are also culturally similar

André Lwoff was a French biologist who contributed to the understanding of lysogeny, in which a bacterial virus, or bacteriophage, infects bacteria and is transmitted to subsequent bacterial generations solely through the cell division of its host. Lwoff’s discoveries brought him (with François

André Lwoff was a French biologist who contributed to the understanding of lysogeny, in which a bacterial virus, or bacteriophage, infects bacteria and is transmitted to subsequent bacterial generations solely through the cell division of its host. Lwoff’s discoveries brought him (with François

André Lwoff was a French biologist who contributed to the understanding of lysogeny, in which a bacterial virus, or bacteriophage, infects bacteria and is transmitted to subsequent bacterial generations solely through the cell division of its host. Lwoff’s discoveries brought him (with François

Luo, people living among several Bantu-speaking peoples in the flat country near Lake Victoria in western Kenya and northern Tanzania. More than four million strong, the Luo constitute the fourth largest ethnic group in Kenya (about one-tenth of the population) after the Kikuyu (with whom they

Lviv, city, western Ukraine, on the Roztochchya Upland. Founded in the mid-13th century by Prince Daniel Romanovich of Galicia, Lviv has historically been the chief centre of Galicia, a region now divided between Ukraine and Poland. Its position controlling east-west routes and passes across the

nuclear reactor: Light-water reactors: Light-water reactors (LWRs) are power reactors that are cooled and moderated with ordinary water. There are two basic types: the pressurized-water reactor (PWR) and the boiling-water reactor (BWR). In the PWR, water at high pressure and temperature removes heat from…

John Birt, Baron Birt: …appointed director of programs of London Weekend Television (LWT), one of the most profitable companies in British independent television, not least because of its knack of producing light entertainment programs with mass appeal. Despite being more familiar with the more austere end of television output, Birt found little difficulty in…

lux, unit of illumination (see luminous intensity) in the International System of Units (SI). One lux (Latin for “light”) is the amount of illumination provided when one lumen is evenly distributed over an area of one square metre. This is also equivalent to the illumination that would exist on a

Septuagint, the earliest extant Greek translation of the Old Testament from the original Hebrew. The Septuagint was presumably made for the Jewish community in Egypt when Greek was the common language throughout the region. Analysis of the language has established that the Torah, or Pentateuch (the

Francesco Borgongini-Duca: His Le LXX settimane di Daniele e le date Messianiche (1951; “The Seventy Weeks of Daniel and the Messianic Date”) fixed the date of Jesus Christ’s crucifixion as April 7, ad 30.

Ly Nam De was the founder of the first Vietnamese dynasty mentioned in extant historical records and Vietnam’s first great champion of independence. Ly Nam De led a successful revolt against the Chinese governor of Giao-chao province in 542 and captured the capital at Long Bien. Two years later he

Ly Nam De was the founder of the first Vietnamese dynasty mentioned in extant historical records and Vietnam’s first great champion of independence. Ly Nam De led a successful revolt against the Chinese governor of Giao-chao province in 542 and captured the capital at Long Bien. Two years later he

Ly Nam De was the founder of the first Vietnamese dynasty mentioned in extant historical records and Vietnam’s first great champion of independence. Ly Nam De led a successful revolt against the Chinese governor of Giao-chao province in 542 and captured the capital at Long Bien. Two years later he

Later Ly dynasty, (1009–1225), first of the three great dynasties of Vietnam. The kingdom, known later as Dai Viet, was established by Ly Thai To in the Red River Delta area of present northern Vietnam. Its capital was Thang Long (Hanoi). (It is “later” with respect to the Earlier Ly dynasty,

Ly Nam De was the founder of the first Vietnamese dynasty mentioned in extant historical records and Vietnam’s first great champion of independence. Ly Nam De led a successful revolt against the Chinese governor of Giao-chao province in 542 and captured the capital at Long Bien. Two years later he

Hanoi: History: In 1010 Ly Thai To, the first ruler of the Ly dynasty (1009–1225) of Vietnam, chose the site of Hanoi—then called Thang Long (“Rising Dragon”)—for his capital. Thang Long remained the main capital of Vietnam until 1802, when the last Vietnamese dynasty, the Nguyen (1802–1945), transferred the…

Ho Chi Minh was the founder of the Indochina Communist Party (1930) and its successor, the Viet-Minh (1941), and president from 1945 to 1969 of the Democratic Republic of Vietnam (North Vietnam). As the leader of the Vietnamese nationalist movement for nearly three decades, Ho was one of the prime

Anatoly Lyadov was a Russian composer whose orchestral works and poetic, beautifully polished piano miniatures earned him a position of stature in Russian Romantic music. The son of the conductor of the imperial opera, Lyadov entered the conservatory in 1870, studying composition with Nikolay

Anatoly Lyadov was a Russian composer whose orchestral works and poetic, beautifully polished piano miniatures earned him a position of stature in Russian Romantic music. The son of the conductor of the imperial opera, Lyadov entered the conservatory in 1870, studying composition with Nikolay

Abdul Ahad Mohmand: …with two Soviet cosmonauts, commander Vladimir Lyakhov and research doctor Valery Polyakov. At the Mir space station, Mohmand conducted joint research experiments with Lyakhov and Polyakov and made observations of Afghanistan from space. Mohmand and Lyakhov left Mir on September 6 aboard Soyuz TM-5. The initial landing attempt failed owing…

New Siberian Islands: …groups: to the south the Lyakhovskye Islands, separated by Sannikova Strait from the New Siberian Islands proper, and to the northeast the small De Long Islands. The New Siberian Islands proper consist of the large islands of Novaya Sibir, Belkovsky, Kotelny, and Faddeyevsky. Between the last two lies Bunge Island,…

New Siberian Islands: …groups: to the south the Lyakhovskye Islands, separated by Sannikova Strait from the New Siberian Islands proper, and to the northeast the small De Long Islands. The New Siberian Islands proper consist of the large islands of Novaya Sibir, Belkovsky, Kotelny, and Faddeyevsky. Between the last two lies Bunge Island,…

Faisalabad, city, east-central Punjab province, Pakistan, in the Rechna Doab upland. The city, the district headquarters, is a distributing centre centrally located in the Punjab plain and connected by road, rail, and air with Multan and Lahore and by air with Lahore and Karachi. When founded in

Ob River: Physiography: …Great (Bolshoy) Yugan (left), the Lyamin (right), the Great Salym (left), the Nazym (right), and finally, at Khanty-Mansiysk, the Irtysh (left). In its course through the taiga, the middle Ob has a minimal gradient, a valley broadening to 18 to 30 miles (29 to 48 km) wide, and a correspondingly…

Fipa: …two states at Nkansi and Lyangalile replaced Milansi as the foci of political organization; led by the Twa lineage, new methods of production and exchange allowed these two states to grow in complexity. Although shaken by the Ngoni occupation in the mid-19th century, the people of Nkansi in particular found…

lyase, in physiology, any member of a class of enzymes that catalyze the addition or removal of the elements of water (hydrogen, oxygen), ammonia (nitrogen, hydrogen), or carbon dioxide (carbon, oxygen) at double bonds. For example, decarboxylases remove carbon dioxide from amino acids and

acid–base reaction: Alternative definitions: The terms lyonium and lyate ions are occasionally used in this way. In water, the lyonium and lyate ions are H3O+ and OH−; in ethanol, C2H5OH2+ and C2H5O−; and in liquid ammonia, NH4+ and NH2−. For a given solvent, an acid can then be defined as a substance that…

Louis-Hubert-Gonzalve Lyautey was a French statesman, soldier, marshal of France, and devoted believer in the civilizing virtues of colonialism, who built the French protectorate over Morocco. Despite a childhood spinal injury, Lyautey was an outstanding student and entered the Saint-Cyr Military

Sarykol Range: …reaches its highest point at Mount Lyavirdyr at 20,837 ft. The Sarykol Range forms the main watershed of the Amu Darya and Tarim River basins. It is composed of schists together with granites in the north and gneisses in the south. The sparse vegetation is of the high mountain-desert variety,…

Lycaon: …explain an extraordinary ceremony, the Lycaea, held in honour of Zeus Lycaeus at Mount Lycaeus. According to Plato (Republic, Book VIII), this ceremony was believed to involve human sacrifice and lycanthropy (assuming the form of a wolf). The Greek traveler Pausanias implies that the rite was still practiced in the…

blue butterfly: The Karner blue butterfly (Lycaeides melissa samuelis), once found throughout the savanna and barrens habitats of North America, is listed as endangered in the United States. Its numbers have declined as a result of habitat fragmentation and a lack of natural disturbances such as wildfire, which…

copper butterfly: The bronze copper butterfly (L. hyllus) is found in southern Canada and throughout most of the United States. Adults typically have a wingspan of about 3.2 to 4.8 cm (1.3 to 1.9 inches). Male and female bronze coppers are distinguished from other coppers by the gray-white…

copper butterfly: The American copper (Lycaena phleas) is the most common species in North America. Its larvae feed on clover, dock, or sorrel. Adults are delicate, with an 18- to 38-mm (0.75- to 1.5-inch) wingspan. They are rapid fliers and are usually distinguished by iridescent wings. The male’s…

gossamer-winged butterfly, (family Lycaenidae), any of a group of small, often brightly coloured butterflies (order Lepidoptera) that includes several hundred species commonly called coppers, blues, hairstreaks, harvesters, and metal marks. All are small to medium-sized butterflies (wingspan 1–3 cm

copper butterfly, (subfamily Lycaeninae), any member of a group of butterflies in the gossamer-winged butterfly family, Lycaenidae (order Lepidoptera). The copper’s typical coloration ranges from orange-red to brown, usually with a copper tinge and dark markings. The American copper (Lycaena

South American fox: Only Darwin’s fox (Lycalopex fulvipes), which lives in Chile, is listed as an endangered species. The IUCN has yet to evaluate the conservation status of the hoary fox (L. vetulus), which lives in the grasslands of Brazil, and the Sechuran

South American fox: …grasslands of Brazil, and the Sechuran fox (L. sechurae), which lives along the coasts of northwestern Peru and southwestern Ecuador.

South American fox: …the conservation status of the hoary fox (L. vetulus), which lives in the grasslands of Brazil, and the Sechuran fox (L. sechurae), which lives along the coasts of northwestern Peru and southwestern Ecuador.

lycanthropy, (from Greek lykos, “wolf ”; anthropos, “man”), mental disorder in which the patient believes that he is a wolf or some other nonhuman animal. Undoubtedly stimulated by the once widespread superstition that lycanthropy is a supernatural condition in which men actually assume the

Lycaon, in Greek mythology, a legendary king of Arcadia. Traditionally, he was an impious and cruel king who tried to trick Zeus, the king of the gods, into eating human flesh. The god was not deceived and in wrath devastated the earth with Deucalian’s flood, according to Ovid’s Metamorphoses, Book

African wild dog, (Lycaon pictus), wild African carnivore that differs from the rest of the members of the dog family (Canidae) in having only four toes on each foot. Its coat is short, sparse, and irregularly blotched with yellow, black, and white. The African wild dog is about 76–102 cm (30–41

Lycaonia, ancient region in the interior of Anatolia north of the Taurus Mountains, inhabited by a wild and warlike aboriginal people who pastured sheep and wild asses on the bleak central highlands. Little is known about the early Lycaonians. They seem to have escaped Persian domination but

Lycaste, genus of about 30 species of tropical American orchids (family Orchidaceae). Lycaste species are perennial and can be epiphytic or terrestrial. Several species and hybrids are cultivated. The plants have a thick egg-shaped pseudobulb (swollen stem) with one to three large folded leaves

lycée, in France, an upper-level secondary school preparing pupils for the baccalauréat (the degree required for university admission). The first lycée was established in 1801, under the educational reforms of Napoleon Bonaparte. Lycées formerly enrolled the nation’s most talented students in a

lycée: …and technological upper-secondary school (LEGT; lycée d’enseignement général et technologique); this is the successor to the traditional academic upper-secondary school. Students entering the LEGT choose one of three basic streams (humanities, science, or technology) their first year and then concentrate on somewhat more specialized fields of learning (e.g., literary-philosophical, or…

lycée: …the vocational upper-secondary school (LEP; lycée d’enseignement professionel), which offers a range of technical-vocational studies that give access to corresponding studies in higher education. Students entering the LEP choose courses of study leading to one of 30 or so technical baccalauréats.

Molière: Early life and beginnings in theater: …a good education at the Collège de Clermont (the school that, as the Lycée Louis-le-Grand, was to train so many brilliant Frenchmen, including Voltaire). Although his father clearly intended him to take over his royal appointment, the young man renounced it in 1643, apparently determined to break with tradition and…

Lyceum, Athenian school founded by Aristotle in 335 bc in a grove sacred to Apollo Lyceius. Owing to his habit of walking about the grove while lecturing his students, the school and its students acquired the label of Peripatetics (Greek peri, “around,” and patein, “to walk”). The peripatos was the

lyceum movement, early form of organized adult education, of widespread popular appeal in the northeastern and midwestern United States. The first lyceum was founded in 1826 in Millbury, Massachusetts, by Josiah Holbrook, a teacher and lecturer. The lyceum movement, named for the place where

Lyceum Theatre, playhouse on Wellington Street, just north of the Strand, in the Greater London borough of Westminster. A hall called the Lyceum was built near the site in 1771. A new building, called the Royal Lyceum and English Opera House, was built by Samuel Beazley to the west of the original

lych-gate, (from Middle English lyche, “body”; yate, “gate”) roofed-in gateway to a churchyard in which a bier might stand while the introductory part of the burial service was read. The most common form of lych-gate was a simple shed composed of a roof with two gabled ends, covered with tiles or

lychee, (Litchi chinensis), evergreen tree of the soapberry family (Sapindaceae), grown for its edible fruit. Lychee is native to Southeast Asia and has been a favourite fruit of the Cantonese since ancient times. The fruit is usually eaten fresh but can also be canned or dried. The flavour of the

Ohrid, town, southwestern North Macedonia, on the northeastern shore of Lake Ohrid (Ohridsko Jezero). The chief resort of North Macedonia, Ohrid is linked by road and air to Skopje. Agriculture, fishing, and tourism provide a livelihood for the population. In Classical antiquity Ohrid was a Greek

campion: Major species: Members of the genus Lychnis are usually included in Silene, though the taxonomy of the groups has been contentious.

campion: Major species: …Cross, or Jerusalem Cross (S. chalcedonica), has flowers of such a bright scarlet that they can be difficult to integrate into border plantings. Flower-of-Jove (S. flos-jovis) and Caucasian campion, or autumn catchfly (S. schafta), are popular in rock gardens.

Lycia, ancient maritime district of southwestern Anatolia (now Turkey). Lycia lay along the Mediterranean coast between Caria and Pamphylia, and extended inland to the ridge of the Taurus Mountains. In Egyptian, Hittite, and Ugaritic records of the 14th and 13th centuries bc, the Lycians are

Anatolia: Greek colonies on the Anatolian coasts, c. 1180–547 bce: Of the Lycians, to the east of Caria, nothing definite is known before the 6th century, though archaeological evidence shows that the Greeks had commercial contacts with Lycia as early as about 700. Curiously, it was under the aegis of Persian rule that Greek civilization penetrated into…

Lycian alphabet, writing system of the Lycian people of southwest Asia Minor, dating from the 5th–4th centuries bc. The Lycian alphabet is clearly related to the Greek, but the exact nature of the relationship is uncertain. Several letters appear to be related to symbols of the Cretan and Cyprian

Lycian language, one of the ancient Anatolian languages. Evidence for Lycian consists of more than 150 inscriptions on stone, some 200 on coins, and a handful on other objects. While a few of the coins may be earlier, the texts on stone all date from the 5th and 4th centuries bce. All but a few of

Lycia: …cities that made up the Lycian League. Neither Phrygia nor Lydia were able to bring Lycia under its control, but the country eventually fell to Cyrus’ general Harpagus after a heroic resistance. Under Achaemenian Persia and later under the rule of the Romans, Lycia enjoyed relative freedom and was able…

Solanales: Family characteristics: Lycianthe has about 200 species, mainly in Neotropical forests but with some species in tropical Asia. Another large but poorly known genus from Neotropical forests is Cestrum, with about 175 species. Better known, because of its ornamental and drug plants, is Nicotiana (tobacco), which has…

net-winged beetle, (family Lycidae), any of some 2,800 species of soft-bodied, brightly coloured, predominately tropical beetles (insect order Coleoptera) whose wing covers, or elytra, are broader at the tip than at the base and are characterized by a raised network of lines, or veins. The adults

Lycidas, poem by John Milton, written in 1637 for inclusion in a volume of elegies published in 1638 to commemorate the death of Edward King, Milton’s contemporary at the University of Cambridge who had drowned in a shipwreck in August 1637. The poem mourns the loss of a virtuous and promising

Per Daniel Amadeus Atterbom: …work is the fairy-tale play Lycksalighetens ö, 2 vol. (1824–27; “The Isle of the Blessed”), which, on the literal level, deals with King Astolf, who deserts his northern kingdom for the temptations of sensual beauty, and, on the symbolic level, with the beguiling power of imagination in the history of…

wolf snake: The common wolf snake (Lycodon aulicus) is a small, brown, nocturnal serpent of southeastern Asia that eats frogs, geckos, and lizards.

Lycoming, county, north-central Pennsylvania, U.S., constituting a mountainous upland region largely on the Allegheny Plateau. Notable features include Bald Eagle Mountain in the southwest and Pine Creek Gorge in the west. The county is drained by the West Branch Susquehanna River and Pine, Little

Lycoming College, private, coeducational institution of higher learning in Williamsport, Pennsylvania, U.S. It is affiliated with the United Methodist Church. Emphasizing a curriculum in the liberal arts, the college offers bachelor’s degrees in more than 30 fields and several preprofessional

Western painting: Pagan Roman paintings: …of the 2nd century; and Lycon, an Asiatic Greek, in the Temple of Juno at Ardea in the late 3rd or early 2nd century. Nothing is known about the work of these artists.

lycopene, an organic compound belonging to the isoprenoid series and responsible for the red colour of the tomato, the hips and haws of the wild rose, and many other fruits. Lycopene is an isomer of the carotenes, the yellow colouring matter, both having the same molecular formula, C40H56, but

Lycoperdaceae, former family of fungi in the order Agaricales (phylum Basidiomycota, kingdom Fungi), now placed in the family Agaricaceae. Phylogenetic analyses have shown Lycoperdaceae to be a subgroup within Agaricaceae, though the group does not have a defined status in the taxonomic

Agaricales: Agaricaceae: Lycoperdon is a genus of 50 cosmopolitan species of small common puffballs. Calvatia contains about 35 species, including the giant puffball (C. gigantea), which can be as large as 120 cm (4 feet) across.

Lycoperdaceae: L. perlatum (gemmatum) has spotlike scars on the surface and is edible only when young. These fungi are found in the woods or on sawdust in summer and autumn.

Lycoperdaceae: L. perlatum (gemmatum) has spotlike scars on the surface and is edible only when young. These fungi are found in the woods or on sawdust in summer and autumn.

tomato, (Solanum lycopersicum), flowering plant of the nightshade family (Solanaceae), cultivated extensively for its edible fruits. Labelled as a vegetable for nutritional purposes, tomatoes are a good source of vitamin C and the phytochemical lycopene. The fruits are commonly eaten raw in salads,

tomato, (Solanum lycopersicum), flowering plant of the nightshade family (Solanaceae), cultivated extensively for its edible fruits. Labelled as a vegetable for nutritional purposes, tomatoes are a good source of vitamin C and the phytochemical lycopene. The fruits are commonly eaten raw in salads,

wolf snake: The Cape wolf snake (Lycophidion capense), abundant from Egypt to South Africa, is a small, drab species with a metallic sheen and lives chiefly on lizards. It can grow to lengths of about 50 cm (20 inches). The common wolf snake (Lycodon aulicus) is a small,…

Lycophron of Chalcis was a Greek poet and scholar best known because of the attribution to him of the extant poem Alexandra. Invited to work in the Alexandrian library (c. 285 bc), Lycophron there wrote a treatise on comedy and numerous tragedies, of which only a few fragments survive. The

lycophyte, (class Lycopodiopsida), class of spore-bearing vascular plants comprising more than 1,200 extant species. Three lycophyte orders are recognized: the club mosses (Lycopodiales), the quillworts and their allies (Isoetales), and the spike mosses (Selaginellales). This classification is

club moss, (family Lycopodiaceae), any of some 400 species of seedless vascular plants constituting the only family of the lycophyte order Lycopodiales. The taxonomy of the family has been contentious, and the number of genera vary depending on the source. The plants are native mainly to tropical

lycophyte: Annotated classification: Order Lycopodiales (club mosses) Living and extinct plants with primary growth only; homosporous; 16 living genera, mostly tropical: Huperzia (10–15 species), Lycopodium (9–15 species), Lycopodiella (15 species), and Phylloglossum (1

club moss: Major genera and species: Members of the genus Lycopodiella are commonly known as bog club mosses. They grow in bogs and other wetland habitats nearly worldwide, and many species are native to tropical areas of the Americas.

lycophyte, (class Lycopodiopsida), class of spore-bearing vascular plants comprising more than 1,200 extant species. Three lycophyte orders are recognized: the club mosses (Lycopodiales), the quillworts and their allies (Isoetales), and the spike mosses (Selaginellales). This classification is

lycophyte: Annotated classification: …New Zealand; includes the extinct Lycopodites. The other extant genera are Austrolycopodium, Dendrolycopodium, Diphasiastrum, Diphasium, Lateristachys, Lycopodiastrum, Palhinhaea, Phlegmariurus, Pseudodiphasium, Pseudolycopodiella, Pseudolycopodium, and Spinulum. Order Selaginellales (

lycophyte: Life cycle: Although Lycopodium gametophytes are rarely found in nature, enough is known about them to recognize two fundamental types, based principally upon their mode of growth and nutrition. In some species the gametophyte becomes a small, green plant with numerous lobes, growing on the surface of the…

club moss: Major genera and species: Alpine club moss (Diphasiastrum alpinum), with yellowish or grayish leaves, is native to cold woods and alpine mountains in northern North America and Eurasia. Ground cedar (D. digitatum), native to northern North America, produces fanlike branches resembling juniper branchlets.

club moss: Major genera and species: …club moss, also known as running pine or stag’s horn moss (Lycopodium clavatum), has creeping stems up to 3 metres (about 10 feet) long and has 10-cm- (about 4-inch-) high ascending branches. The scalelike green leaves are set closely together. Running pine is native to open dry woods and rocky…

club moss: Major genera and species: Ground cedar (D. digitatum), native to northern North America, produces fanlike branches resembling juniper branchlets.

club moss: Major genera and species: Ground pine (Dendrolycopodium obscurum), a 25-cm- (10-inch-) tall plant, has underground-running stems. It is native to moist woods and bog margins in northern North America, to mountain areas farther south, and to eastern Asia.

Asyūṭ, capital of Asyūṭ muḥāfaẓah (governorate) and one of the largest settlements of Upper Egypt. It lies on the west bank of the Nile River, almost midway between Cairo and Aswān. The irrigated Nile River valley is about 12 miles (20 km) wide at that point. Known as Syut in ancient Egypt, the

Edward Charles Jeffrey: …reclassified all vascular plants into Lycopsida and Pteropsida; while later classifications have refined plant groupings, these two divisions remain as two of the four classes of vascular plants. His work on lycopsids furthered the investigation of the morphology and evolutionary trends in primitive vascular plants. Jeffrey’s The Anatomy of Woody…