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Abundio Sagástegui Alva
Abundio Sagástegui Alva (1932–2012) was a Peruvian plant taxonomist and specialist of Asteraceae and the flora of Peru, particularly that of Northern Peru. Biography Sagástegui was born to a modest family in Guzmango, Contumazá Province, in 1932. His father was Godofrego Sagástegui Chávez and his mother Otilia Alva. He went to the local school, where he finished first in his class. Thanks to this he was granted a scholarship and continued his studies at the Colegio Nacional San Ramón, in Cajamarca where again he excelled in his studies. This dedication allowed him to continue his studies at the Universidad Nacional de Trujillo (UNT), where he would eventually achieve the degree of doctor of biological science in 1976. He is also remembered for his mentorship skills, his ebullient personality and the remarkable enthusiasm he displayed for his work. In 1956, after spending two years as a secondary education teacher in Otuzco, he entered the staff of the UNT where he woul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phytogeography
Phytogeography (from Greek φυτόν, ''phytón'' = "plant" and γεωγραφία, ''geographía'' = "geography" meaning also distribution) or botanical geography is the branch of biogeography that is concerned with the geographic distribution of plant species and their influence on the earth's surface. Phytogeography is concerned with all aspects of plant distribution, from the controls on the distribution of individual species ranges (at both large and small scales, see species distribution) to the factors that govern the composition of entire communities and floras. Geobotany, by contrast, focuses on the geographic space's influence on plants. Fields Phytogeography is part of a more general science known as biogeography. Phytogeographers are concerned with patterns and process in plant distribution. Most of the major questions and kinds of approaches taken to answer such questions are held in common between phyto- and zoogeographers. Phytogeography in wider sense (or geobo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verbesina
''Verbesina'', many species of which have crownbeard as part of their common names, is a genus of flowering plants, in the family Asteraceae. It is a large genus of about 350 species. All of the species bear white or yellow flowers similar to small sunflowers. The name ''Verbesina'' very likely refers to the similarity of the foliage to that of the (unrelated) ''Verbena.'' ''Verbesina'' species are used as food plants by the larvae of some Lepidoptera species. These include ''Schinia bina'', which has been recorded from '' V. encelioides'', and '' Schinia siren'' which feeds exclusively on that species. Pollen grains from eight of the nine species of ''Verbesina'' found in Brazil have been characterized as oblate-spheroidal, medium-sized, isopolar monads. They are 3-colplorate with a subtriangular amb, a small polar area, a long colpus, a lalongate endoaperture, a caveate exine and an echinate sexine. Selected species * ''Verbesina alternifolia'' * '' Verbesina auriculigera' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coreopsis
''Coreopsis'' () is a genus of flowering plants in the family Asteraceae. Common names include calliopsis and tickseed, a name shared with various tickseed, other plants. Description These plants range from in height. The flowers are usually yellow with a toothed tip, but can also be yellow-and-red bicolor or pink. They have showy flower heads with involucral bracts in two distinct series of eight each, the outer being commonly connate at the base. The flat fruits are small and dry and look like insects. There are nearly 40 species of ''Coreopsis'', all of which are native plant, native to North America, North, Central America, Central, and South America. The name ''Coreopsis'' is derived from the Ancient Greek words (), meaning "Bed bug, bedbug", and (), meaning "view", referring to the shape of the achene. Species 39 species are currently accepted by ''Plants of the World Online''. *''Coreopsis aristulata'' *''Coreopsis auriculata'' *''Coreopsis bakeri'' *''Coreopsis ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pteridology
The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients, and in having life cycles in which the branched sporophyte is the dominant phase. Ferns have complex leaves called megaphylls that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate ( Polypodiidae) and eusporangiate ferns, the latter group including horsetails, whisk ferns, marattioid ferns, and ophioglossoid ferns. The fern crown group, consisting of the leptosporangiates and eusporangiates, is estimated to have originated in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyperaceae
The Cyperaceae () are a family of graminoid (grass-like), monocotyledonous flowering plants known as wikt:sedge, sedges. The family (biology), family is large; botanists have species description, described some 5,500 known species in about 90 genus, generathe largest being the "true wikt:sedge, sedges" (genus ''Carex''), with over 2,000 species. Distribution Cyperaceae species are widely distributed with the centers of diversity for the group occurring in tropical Asia and tropical South America. While sedges grow in almost all environments, many thrive in wetlands or in poor soils. Community (ecology), Ecological communities dominated by sedges are known as s or as sedge meadows. Classification Some species superficially resemble the closely related Juncaceae , rushes and the more distantly related grasses. Features distinguishing members of the sedge family from grasses or rushes are stems with triangular cross-sections (with occasional exceptions, a notable example be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ángel Lulio Cabrera
Ángel Lulio Cabrera (born 19 October 1908 in Madrid, Spain – died 8 July 1999 in Buenos Aires, Argentina) was an Argentine botanist. Biography Born in Madrid, Cabrera was the son of zoologist and paleontologist Ángel Cabrera Ángel Leopoldo Cabrera (; born 12 September 1969) is an Argentine professional golfer who has played on both the European Tour and PGA Tour. He is known affectionately as ''"El Pato"'' in Spanish ''("The Duck")'' for his waddling gait. He is a ... and nephew of the first Anglican bishop in Spain, Juan Bautista Cabrera. His vocation in biology was influenced by family vacations in the Sierra de Guadarrama, as well as his father's profession. Abbreviation See also * Taxa named by Ángel Lulio Cabrera References 1908 births 1999 deaths Scientists from Madrid 20th-century Argentine botanists {{argentina-botanist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Plata
La Plata () is the capital city of Buenos Aires province, Argentina. According to the 2022 Argentina census, census, the La Plata Partido, Partido has a population of 772,618 and its metropolitan area, the Greater La Plata, has 938,287 inhabitants. It is located 9 kilometers (6 miles) inland from the southern shore of the estuary. La Plata was planned and developed to serve as the provincial capital after the city of Buenos Aires was Federalization of Buenos Aires, federalized in 1880. It was officially founded by Governor Dardo Rocha on 19 November 1882. Its construction is fully documented in photographs by Tomás Bradley Sutton. La Plata was briefly known as ''Ciudad Eva Perón'' (Eva Perón City) between 1952 and 1955. History and description After La Plata was designated the provincial capital, Rocha was placed in charge of creating the city. He hired urban planner Pedro Benoit, who designed a city layout based on a rationalism, rationalist urban planning, conception ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Morphology
Phytomorphology is the study of the physical form and external structure of plants.Raven, P. H., R. F. Evert, & S. E. Eichhorn. ''Biology of Plants'', 7th ed., page 9. (New York: W. H. Freeman, 2005). . This is usually considered distinct from plant anatomy, which is the study of the internal structure of plants, especially at the microscopic level. Plant morphology is useful in the visual identification of plants. Recent studies in molecular biology started to investigate the molecular processes involved in determining the conservation and diversification of plant morphologies. In these studies transcriptome conservation patterns were found to mark crucial ontogenetic transitions during the plant life cycle which may result in evolutionary constraints limiting diversification. Scope Plant morphology "represents a study of the development, form, and structure of plants, and, by implication, an attempt to interpret these on the basis of similarity of plan and origin". There ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floristics
Floristics is the study of plants of geographical regions. It is a branch of phytogeography, which technically makes it a branch of botany, geography, and a subbranch of biogeography. Harvard University has a history of research with early contributions. For example, Asa Gray was a Harvard researcher who studied the plants of North America and its connections to Asia. Floristics is essential to understanding floristic diversity across the world. Etymology The words "floristic" and "floristics" originate from the Latin word ''Flora'', from ''wikt:en:flos#Latin, flos'' (flower), and the prefix "''wikt:en:-istic, -istic''", a word-forming suffix indicating a relation to or of. References Phytogeography {{Botany-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnaldoa
''Arnaldoa'' is a genus of flowering plants in the aster family, Asteraceae. It is native to Ecuador and Peru.Ulloa, C. U., et al. (2002)''Arnaldoa argentea'' (Barnadesioideae: Asteraceae), a new species and a new generic record for Ecuador.''Novon'' 12 415-419. These plants are shrubs with spines located at the attachment point of each leaf to the stem. The flower heads contain disc florets in shades of orange, orange-red, purple, or cream and the pappus-tufted fruits are adapted for wind dispersal. The plants grow on dry, wooded or shrubby slopes at elevations between 1370 and 3000 metres. ; Species * '' Arnaldoa argentea'' C.Ulloa, P.Jørg. & M.O.Dillon – up to 3.5 meters tall with light orange or cream-colored florets (Ecuador) * '' Arnaldoa coccinosantha'' (Muschl.) Ferreyra - Peru * '' Arnaldoa macbrideana'' Ferreyra – purple florets (Peru) * '' Arnaldoa weberbaueri'' (Muschl.) Ferreyra – bright orange-red or occasionally purple florets up to 5 centimete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnaldo López Miranda
Arnaldo is a given name. Notable people with the name include: * Arnaldo Abrantes (born 1986), Portuguese track and field sprinter * Arnaldo Alonso (born 1979), Paraguayan footballer * Arnaldo André (born 1943), soap-opera Paraguayan actor * Arnaldo Andreoli (1893–1952), Italian gymnast who competed in the 1920 Summer Olympics * Arnaldo Maria Angelini (1909–1999), Italian scientist, working with Italy's power generation * Arnaldo Antunes (born 1960), writer and composer from Brazil * Arnaldo Baptista (born 1948), Brazilian rock musician and composer * Arnaldo Villalba Benitez (born 1978), Paraguayan footballer * Arnaldo Bonfanti (born 1978), footballer * Arnaldo Carli (1901–1972), Italian racing cyclist and Olympic champion * Arnaldo Cézar Coelho (born 1943), the first Brazilian to take charge of the FIFA World Cup final * Arnaldo Cohen, Brazilian pianist * Arnaldo da Silva (born 1964), former Brazilian athlete * Arnaldo de Oliveira Sales, GBM, OBE, JP, Chairman of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
