James Boswell was a friend and biographer of Samuel Johnson (Life of Johnson, 2 vol., 1791). The 20th-century publication of his journals proved him to be also one of the world’s greatest diarists. Boswell’s father, Alexander Boswell, advocate and laird of Auchinleck in Ayrshire from 1749, was

same-sex marriage: …the Yale professor and historian John Boswell (1947–94), have argued that same-sex unions were recognized by the Roman Catholic Church in medieval Europe, although others have disputed this claim. Scholars and the general public became increasingly interested in the issue during the late 20th century, a period when attitudes toward…

the Boswell Sisters: …the New Orleans Philharmonic) featured Martha on piano, Helvetia (known to all as “Vet”) on violin, guitar, and banjo, and Connee on cello, saxophone, and trombone. By 1925 they had evolved into a singing group, but the few records they cut that year attracted little notice. During an early broadcast…

baseball pitch clock: Reactions to the changes: Legendary Washington Post baseball writer Thomas Boswell begged to differ, writing early in the season:

the Boswell Sisters: …Philharmonic) featured Martha on piano, Helvetia (known to all as “Vet”) on violin, guitar, and banjo, and Connee on cello, saxophone, and trombone. By 1925 they had evolved into a singing group, but the few records they cut that year attracted little notice. During an early broadcast engagement, the group…

Stanley Elkin: Elkin’s first novel, Boswell: A Modern Comedy (1964), tells of an ordinary man who founds a club for famous individuals, hoping like his namesake to bask in reflected glory. Criers and Kibitzers, Kibitzers and Criers (1966), a collection of comic short stories on Jewish themes and characters, was…

Burseraceae: Major genera and species: …several species of the genus Boswellia, called frankincense, was used in biblical times in incense, in medicine, and for embalming.

frankincense: Frankincense trees and harvest: …Burseraceae), particularly from the species B. frereana, B. sacra, B. papyrifera, and B. serrata, which are found in Somalia, the Hadhramaut region of Yemen, Oman, and parts of India and Pakistan. Incisions are made in the trunks of the trees, and the frankincense exudes

frankincense: Frankincense trees and harvest: sacra, B. papyrifera, and B. serrata, which are found in Somalia, the Hadhramaut region of Yemen, Oman, and parts of India and Pakistan. Incisions are made in the trunks of the trees, and the frankincense exudes as a milklike juice that hardens on exposure to air.…

frankincense: Frankincense trees and harvest: frereana, B. sacra, B. papyrifera, and B. serrata, which are found in Somalia, the Hadhramaut region of Yemen, Oman, and parts of India and Pakistan. Incisions are made in the trunks of the trees, and the frankincense exudes as a milklike juice that hardens on

frankincense: Frankincense trees and harvest: papyrifera, and B. serrata, which are found in Somalia, the Hadhramaut region of Yemen, Oman, and parts of India and Pakistan. Incisions are made in the trunks of the trees, and the frankincense exudes as a milklike juice that hardens on exposure to air. The resin is…

Battle of Bosworth Field, (August 22, 1485), battle in the English Wars of the Roses, fought 12 miles (19 km) west of Leicester and 3 miles (5 km) south of Market Bosworth, between the forces of the Yorkist king Richard III and the Lancastrian contender for the crown, Henry Tudor (the future Henry

James Fitzjames, duke of Berwick-upon-Tweed was an English nobleman and marshal of France who was a leading military commander in the French service in the earlier wars of the 18th century. Fitzjames was the “illegitimate” son of James, duke of York (later King James II of England), and Arabella

Superman: The modern era: …newcomer Brandon Routh as Superman, Kate Bosworth as Lois Lane, and Kevin Spacey as Lex Luthor. The film was a box-office disappointment, and Warner Brothers canceled its plans for a sequel. The studio turned to director Christopher Nolan and screenwriter David S. Goyer, the creative minds behind the highly successful…

Germanic law: Tribal Germanic institutions: …wergild in homicide cases and bot in others. Payment was voluntary at first; only later did it become obligatory. Even in the 7th century, Visigothic law still allowed retaliation in kind for all injuries except those to the head. The leges contained elaborate tariffs of compensation for different kinds of…

CAPTCHA: …automated computer programs, known as bots and spiders, from gaining access to websites. A CAPTCHA, which may consist of letters, numbers, or images, is distorted in some manner to prevent recognition by computers but not so distorted that a human with normal vision cannot identify the code and retype it.

bot fly, (family Oestridae), any member of a family of insects in the fly order, Diptera, in which the adults are beelike in appearance and hairy but without bristles. The larvae are parasitic on mammals. Horse bot flies (subfamily Gasterophilinae) include species of Gasterophilus, a serious horse

Pakistan: Transportation and telecommunications: …the basis of a “build-operate-transfer” (BOT) approach, which subsequently became popular in other developing countries. (In the BOT system, private entrepreneurs build and operate infrastructure facilities such as ports, highways, and power plants and then recover their costs by charging tariffs from the users. Once the investors have recovered…

Rio de Janeiro: South Zone: …hem in the district of Botafogo, the shape of which resembles a reclining figure. Its head is on the beach, one arm stretches back toward Laranjeiras, and the other is draped along the bay to Red Beach (Praia Vermelha), the home of the National War College and the Army Staff…

sour cream: Origins: … and first fermented by the Botai people of what is now Kazakhstan—who may have been among the first humans to tame horses. Mare’s milk has a much higher level of lactose than cow’s or yak’s milk and thus produces a strong laxative effect in humans if ingested raw. Fermentation

botanical garden, originally, a collection of living plants designed chiefly to illustrate relationships within plant groups. In modern times, most botanical gardens are concerned primarily with exhibiting ornamental plants, insofar as possible in a scheme that emphasizes natural relationships.

Singapore Botanic Gardens, botanical garden in Singapore that is one of the world’s finest in terms of both its aesthetic appeal and the quality of its botanical collection. The garden has approximately 3,000 species of tropical and subtropical plants and a herbarium of about 500,000 preserved

nutritional disease: Botanicals and functional foods: Many herbal products show sufficient promise in preventing or treating disease that they are being tested in rigorous scientific studies, including clinical trials. However, the “botanicals” currently on the market in many countries are untested with regard to safety and efficacy,…

botanical garden, originally, a collection of living plants designed chiefly to illustrate relationships within plant groups. In modern times, most botanical gardens are concerned primarily with exhibiting ornamental plants, insofar as possible in a scheme that emphasizes natural relationships.

Jardin des Plantes, one of the world’s foremost botanical gardens, located in Paris. It was founded in 1626 as a royal garden of medicinal plants and was first opened to the public in 1650. Under the superintendence of G.-L.L. Buffon (1739–88) the garden was greatly expanded, and it developed into

Komarov Botanical Institute, major botanical research centre in St. Petersburg, Russia. The 22-hectare (54-acre) garden has about 6,700 species of plants, many of which were obtained through a series of plant-collecting expeditions sent to all parts of the world. Its most important collections

Munich Botanical Garden, botanical garden founded in 1914 by the German botanist Karl von Goebel in Munich. The garden’s vast array of greenhouses, completed in 1958, includes 17 for display and 8 for service functions. The palm house is particularly notable. Other significant greenhouse

Berlin-Dahlem Botanical Garden and Botanical Museum, oldest botanical garden in Germany. Founded in the 17th century as a royal garden for flowers, medicinal plants, vegetables, and hops (for the royal brewery), it eventually became badly neglected. In 1801 the botanist Carl Ludwig Willdenow became

Botanize! is a podcast series that will introduce you to some of the world’s most remarkable plants, fungi, and algae. These overlooked organisms have fascinating evolutionary stories to tell about survival, exploitation, adaptation, and general scrappiness, and every episode will pique your

botany, branch of biology that deals with the study of plants, including their structure, properties, and biochemical processes. Also included are plant classification and the study of plant diseases and of interactions with the environment. The principles and findings of botany have provided the

Botany Bay, inlet of the Tasman Sea (Pacific Ocean), indenting New South Wales, Australia. Roughly circular, about 5 miles (8 km) across and 1 mile (1.6 km) wide at its mouth (between the La Perouse and Kurnell peninsulas), it receives the Georges and Cooks rivers. The bay was the site in 1770 of

eucalyptus: Major species and uses: …yield what is known as Botany Bay kino, an astringent dark reddish resin, obtained in a semifluid state from incisions made in the tree trunk.

Exclusive, in Australian history, member of the sociopolitical faction of free settlers, officials, and military officers of the convict colony of New South Wales, formed in the late 18th and early 19th centuries. The Exclusives sought to exclude Emancipists (former convicts) from full civil

Emancipist, any of the former convicts in New South Wales, Australia, in the late 18th and the first half of the 19th centuries, specifically those who were seeking civil rights. Technically, the term applied only to pardoned convicts; it was generally used as well, however, for “expirees”—convicts

angiosperm: Significance to humans: …exception of antibiotics, almost all medicinals either are derived directly from compounds produced by angiosperms or, if synthesized, were originally discovered in angiosperms. This includes some vitamins (e.g., vitamin C, originally extracted from fruits); aspirin, originally from the bark of willows (Salix; Salicaceae); narcotics (e.g.,

bittern, any of 12 species of solitary marsh birds of the subfamily Botaurinae, family Ardeidae (order Ciconiiformes), allied to the herons (subfamily Ardeinae) but with shorter neck and stouter body. Most bitterns bear a camouflage pattern—streaks of variegated brown and buff—which enables them to

bittern: There are four species of Botaurus and eight species of Ixobrychus.

bittern: The American bittern (B. lentiginosus), known locally as “stake driver” or “thunder pumper,” is slightly smaller. Other forms are the Australian bittern (B. poiciloptilus) and the South American, or pinnated, bittern (B. pinnatus).

bittern: …of the genus is the Eurasian bittern (B. stellaris), to 75 cm (30 inches), ranging from the British Isles to southeastern Asia and occurring also in South Africa. The American bittern (B. lentiginosus), known locally as “stake driver” or “thunder pumper,” is slightly smaller. Other forms are the Australian bittern…

Japanese literature: The novel between 1905 and 1941: …with humorous novels such as Botchan (1906; “The Young Master”; Eng. trans. Botchan), a fictionalized account of his experiences as a teacher in a provincial town. Botchan enjoyed phenomenal popularity after it first appeared. It is the most approachable of Sōseki’s novels, and the Japanese found pleasure in identifying themselves…

Fernando Botero was a Colombian artist known for his paintings and sculptures of inflated human and animal shapes. As a youth, Botero attended a school for matadors for several years, but his true interest was in art. While still a teenager, he began painting and was inspired by the pre-Columbian

Niccolò Machiavelli: Legacy: …example, was the Italian philosopher Giovanni Botero (1540–1617), who was among the first to establish the idea of a moral exemption for the state. Authors taking a similar approach developed, for safety’s sake, the practice of quoting passages from the Roman historian Tacitus (ad 56–120)—thus becoming known as “Tacitists”—when they…

Boteti River, river of Botswana. It emerges near Maun and the Thamakalane River, developing from the outflow of the Okavango Delta, Botswana. It flows in a southeasterly direction to Lake Xau (Dow), then north to enter the Makgadikgadi Pans after a course of 190 miles (305

Botev, highest peak (7,795 feet [2,376 metres]) in the Balkan Mountains of central Bulgaria. It was formerly called Ferdinandov and, until 1950,

Khristo Botev was a patriot and renowned poet, one of the heroes of the Bulgarian national revolutionary movement against Turkish rule. In 1863 Botev was sent to complete his education in Russia, where he was much influenced by nihilist ideas. He returned to Bulgaria in 1867 but then fled to

Botev, highest peak (7,795 feet [2,376 metres]) in the Balkan Mountains of central Bulgaria. It was formerly called Ferdinandov and, until 1950,

Romanian literature: After World War II: Demostene Botez, whose prewar poetry described the sadness of provincial life, later revealed a vigorous optimism, and Eugen Jebeleanu, who spent much of the 1930s as a left-wing journalist, produced increasingly abstracted poetry. Also among those who came to the fore during and after World…

bot fly, (family Oestridae), any member of a family of insects in the fly order, Diptera, in which the adults are beelike in appearance and hairy but without bristles. The larvae are parasitic on mammals. Horse bot flies (subfamily Gasterophilinae) include species of Gasterophilus, a serious horse

Oliver Cromwell: Military and political leader of Oliver Cromwell: …appointed a member of the Committee of Both Kingdoms, which became responsible for the overall strategy of the Civil War. But since he was engaged at the front during the campaigning season, Cromwell took little part in its deliberations.

George Wesley Bellows: …as Stag at Sharkey’s and Both Members of This Club (both 1909), date from this period as well; they remain among his most famous works.

Joni Mitchell: Later albums: …after performing her song “Both Sides Now.”

Juliette Binoche: …Avec amour et acharnement (Both Sides of the Blade), about a love triangle.

Maxwell Anderson: …humorous Pulitzer Prize-winning prose satire, Both Your Houses (1933), an attack on venality in the U.S. Congress. He reached the peak of his career with Winterset (1935), a poetic drama set in his own times. A tragedy inspired by the Sacco and Vanzetti case of the 1920s and set in…

Italianate painters: …the Italianates were Bartholomeus Breenbergh, Andries and Jan Both, Nicolaes Berchem, and Jan Asselijn. The Both brothers, of Utrecht, were to some degree rivals of the Haarlem-born Berchem. Andries painted the figures that populated Jan’s landscapes. Berchem’s own compositions were largely derived from the Arcadian landscapes of the French painter…

Jan Both was a Baroque painter and etcher, the leading master of the “Italianate” trend of Dutch landscape painting in the 17th century. Both first studied with his father, Dirck Both, a glass painter, and then with Abraham Bloemaert. From 1638 to 1641 he lived in Rome with his brother Andries; in

Jan Both was a Baroque painter and etcher, the leading master of the “Italianate” trend of Dutch landscape painting in the 17th century. Both first studied with his father, Dirck Both, a glass painter, and then with Abraham Bloemaert. From 1638 to 1641 he lived in Rome with his brother Andries; in

Jan Both was a Baroque painter and etcher, the leading master of the “Italianate” trend of Dutch landscape painting in the 17th century. Both first studied with his father, Dirck Both, a glass painter, and then with Abraham Bloemaert. From 1638 to 1641 he lived in Rome with his brother Andries; in

Pieter Both was a Dutch colonialist who was the first governor-general of the Netherlands East Indies. After sailing as an admiral in the Indies (1599–1601), he was sent in November 1609 to govern the colony, with instructions to see to it that the Netherlands had the entire monopoly of the trade

Louis Botha was a soldier and statesman who was the first prime minister of the Union of South Africa (1910–19) and a staunch advocate of a policy of reconciliation between Boers and Britons, as well as of limiting the political rights of Black South Africans. The son of a voortrekker (Boer pioneer

P. W. Botha was the prime minister (1978–84) and first state president (1984–89) of South Africa. A native of the Orange Free State, he studied law at the University of Orange Free State at Bloemfontein from 1932 to 1935 but left without graduating. Already active in politics in his teens, he moved

P. W. Botha was the prime minister (1978–84) and first state president (1984–89) of South Africa. A native of the Orange Free State, he studied law at the University of Orange Free State at Bloemfontein from 1932 to 1935 but left without graduating. Already active in politics in his teens, he moved

Walther Bothe was a German physicist who shared the Nobel Prize for Physics in 1954 with Max Born for his invention of a new method of detecting subatomic particles and for other resulting discoveries. Bothe taught at the universities of Berlin (1920–31), Giessen (1931–34), and Heidelberg

Walther Bothe was a German physicist who shared the Nobel Prize for Physics in 1954 with Max Born for his invention of a new method of detecting subatomic particles and for other resulting discoveries. Bothe taught at the universities of Berlin (1920–31), Giessen (1931–34), and Heidelberg

pleuronectiform: Annotated classification: Family Bothidae (left-eyed flounders) Eyes sinistral; anus generally far up on blind side; gill membranes connected; dorsal and anal fin rays shortened posteriorly; two series of intramuscular bones; pelvic fin bases on ocular side long, on blind side shorter, 6-fin rays in all but 1 species.…

English literature: Arnold and Clough: The Bothie of Tober-na-Vuolich (1848) is a narrative poem of modern life, written in hexameters. Amours de Voyage (1858) goes beyond this to the full-scale verse novel, using multiple internal narrators and vivid contemporary detail. Dipsychus (published posthumously in 1865 but not available in an…

Bay of Bothnia, gulf forming the northern part of the Gulf of Bothnia, the northern arm of the Baltic Sea, which lies between Finland and

Gulf of Bothnia, northern arm of the Baltic Sea, between Sweden (west) and Finland (east). Covering an area of about 45,200 square miles (117,000 square km), the gulf extends for 450 miles (725 km) from north to south but only 50 to 150 miles (80 to 240 km) from east to west; it is nearly closed

Bothnian Sea, the southern part of the Gulf of Bothnia, the northern arm of the Baltic Sea, which lies between Finland and

Philipp, prince of Eulenburg was a diplomat and intimate friend and adviser of the German emperor William II. After leaving the army, Eulenburg entered the diplomatic service (1877) and served as secretary to the Prussian mission in Munich (1881–88). A close friend of William II since 1886, he

bluestem: Silver beardgrass, or silver bluestem (Bothriochloa saccharoides, formerly A. saccharoides), reaches 0.6 to 1.3 metres (about 2 to 4 feet) in height and has silvery white flower clusters 7–15 cm (about 3–6 inches) long; it is a forage grass in the southwestern United States.

Bothriolepis, genus of extinct fishes of the order Antiarcha, class Placodermi, characteristic of the Middle and Late Devonian (from about 387 million to 360 million years ago). The front end of Bothriolepis was very heavily encased in bony armour. The eyes were located on top of the head shield

ant: Notable ant behaviors: The queen of Bothriomyrmex decapitans of Africa, for example, allows herself to be dragged by Tapinoma ants into their nest. She then bites off the head of the Tapinoma queen and begins laying her own eggs, which are cared for by the “enslaved” Tapinoma workers. Workers of the…

scorpion: Annotated classification: Family Bothriuridae 112 species found in South America, India, southern Africa, and Australia. 3 lateral eyes on each side. Family Diplocentridae 85 species found in warm regions of the Middle East, Mexico southward to northern South America, and the Antilles islands. Tubercular spine under stinger. Family…

scorpion: Annotated classification: Family Bothriuridae 112 species found in South America, India, southern Africa, and Australia. 3 lateral eyes on each side. Family Diplocentridae 85 species found in warm regions of the Middle East, Mexico southward to northern South America, and the Antilles islands. Tubercular spine under stinger. Family…

Lepidodendron: Lepidodendron and its relatives—Lepidophloios, Bothrodendron, and Paralycopodites—were related to modern club mosses. They grew up to 40 metres (130 feet) in height and 2 metres (about 7 feet) in diameter. During their juvenile stages, these plants grew as unbranched trunks with a shock of long, thin leaves that sprouted…

fer-de-lance, any of several extremely venomous snakes of the viper family (Viperidae) found in diverse habitats from cultivated lands to forests throughout tropical America and tropical Asia. The fer-de-lance, known in Spanish as barba amarilla (“yellow chin”), is a pit viper (subfamily

fer-de-lance: The wutu, a dangerous South American snake, is about 1.2 metres long. It is brown, boldly marked on its sides with thick dark semicircles outlined in yellow.

fer-de-lance: …name to the terciopelo (B. asper) and the common lancehead (B. atrox) of South America. The name fer-de-lance has also been used collectively to describe all snakes of the Central and South American genus Bothrops and the Asian genus Trimeresurus. Among these snakes, all venomous, are the habus (T.…

snake: Specializations for securing food: …such as that of the golden fer-de-lance (Bothrops insularis) of Queimada Island, off the Brazilian coast, which would lose as prey most of the birds it bites if they could fly very far away. Other venoms kill more slowly, and the snake bites, retires, and waits, finally trailing the bitten…

Río de la Plata: Animal life: …the cross viper, and the yarará (the most prevalent South American representative of the viper family). Frogs and toads are plentiful, as are freshwater crabs. There are innumerable species of insects and spiders, and the islands are plagued by mosquitos. Herons, cormorants, storks, and game birds also are plentiful, as…

fer-de-lance: The jararaca, or yarará, is found chiefly in Brazil, where it is abundant in grassy regions. Its bite causes many deaths. It usually grows to about 1.2 metres (4 feet) and is olive-brown or grayish brown with darker brown blotches. In Argentina the name yarará also…

fer-de-lance: …to the Martinique lancehead (Bothrops lanceolatus) found on the island of the same name in the West Indies. Several authoritative sources, however, frequently apply the name to the terciopelo (B. asper) and the common lancehead (B. atrox) of South America. The name fer-de-lance has also been used collectively to…

fer-de-lance: The jumping viper is an aggressive brown or gray Central American snake with diamond-shaped crosswise markings on its back. It is usually about 60 cm (2 feet) long. It strikes so energetically that it may lift itself off the ground. Its venom, however, is not especially…

Bothriolepis, genus of extinct fishes of the order Antiarcha, class Placodermi, characteristic of the Middle and Late Devonian (from about 387 million to 360 million years ago). The front end of Bothriolepis was very heavily encased in bony armour. The eyes were located on top of the head shield

flounder: …90 cm (35 inches); the peacock flounder (Bothus lunatus), a tropical American Atlantic species attractively marked with many pale blue spots and rings; the brill (Scophthalmus rhombus), a relatively large commercial European species, reaching a length of 75 cm (29 inches); and the dusky flounder (Syacium papillosum), a tropical western…

Francis Stewart Hepburn, 5th earl of Bothwell , was a nephew of the 4th earl. By his dissolute and proud behaviour, he caused King James VI of Scotland (afterward James I of Great Britain) to gradually consider him a rival and a threat to the Scottish crown and was made an outlaw. Through his

James Hepburn, 4th earl of Bothwell was the third husband of Mary, Queen of Scots. He evidently engineered the murder of Mary’s second husband, Henry Stewart, Lord Darnley, thereby precipitating the revolt of the Scottish nobles and Mary’s flight to England, where she was imprisoned by Queen

James Hepburn, 4th earl of Bothwell was the third husband of Mary, Queen of Scots. He evidently engineered the murder of Mary’s second husband, Henry Stewart, Lord Darnley, thereby precipitating the revolt of the Scottish nobles and Mary’s flight to England, where she was imprisoned by Queen

loach: Among these are the clown loach (Botia macracanthus), an orange fish about 13–30 centimetres (5–12 inches) long and marked with three vertical black bands, and the kuhli loach (Pangio kuhlii), a pinkish, eel-like species about 8 centimetres long, marked with many vertical black bands. Other loaches include the stone…

Boteti River, river of Botswana. It emerges near Maun and the Thamakalane River, developing from the outflow of the Okavango Delta, Botswana. It flows in a southeasterly direction to Lake Xau (Dow), then north to enter the Makgadikgadi Pans after a course of 190 miles (305

information system: Computer crime and abuse: …and organize them into so-called botnets that can launch massive attacks against other systems to steal information or sabotage their operation. There is a growing concern that, in the “Internet of things,” computer-controlled devices such as refrigerators or TV sets may be deployed in botnets. The variety of devices makes…

river dolphin: The largest species is the Amazon river dolphin (Inia geoffrensis). Also called boto, bufeo, and pink dolphin, it is common in the turbid waters of the Amazon and Orinoco river basins. A male Amazon river dolphin can grow to over 2.4 metres (8 feet) and 160 kg (350 pounds); females…

Mongo Beti was a Cameroonian novelist and political essayist. A member of the Beti people, he wrote his books in French. An essential theme of Beti’s early novels, which advocate the removal of all vestiges of colonialism, is the basic conflict of traditional modes of African society with the

Botocudo, South American Indian people who lived in what is now the Brazilian state of Minas Gerais. They spoke a language of the Macro-Ge group. Their culture was similar to that of other nomadic tribes of the forests and mountains of eastern Brazil. Hunting bands of from 50 to 200 members were

Botoşani, city, capital of Botoşani judeƫ (county), northeastern Romania. It lies in a rich farming area of northern Moldavia, near the border with Moldova. As a settlement, it was first documented in 1439. The Popăuƫi Church dates from 1496. Long known as a market centre for agricultural produce

Botoşani, judeƫ (county), northeastern Romania, occupying an area of 1,925 square miles (4,986 square km), and bounded on the north by Ukraine and on the east by Moldova. The Prut and Siret rivers are, respectively, the county’s eastern and western borders. Both rivers drain southeastward. Botoşani

Botox, trade name of a drug based on the toxin produced by the bacterium Clostridium botulinum that causes severe food poisoning (botulism). When locally injected in small amounts, Botox blocks the release of the neurotransmitter acetylcholine, interfering with a muscle’s ability to contract. It is

Belgium: Relief, drainage, and soils: …(694 metres) is reached at Botrange.

Ophioglossaceae: The genus Botrychium, with about 50 species, distributed throughout the world, includes the grape ferns and moonworts. The rattlesnake fern (B. virginianum) of North America is sometimes placed by itself in the genus Botrypus.

Ophioglossaceae: The rattlesnake fern (B. virginianum) of North America is sometimes placed by itself in the genus Botrypus.