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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 would o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secondary Education
Secondary education or post-primary education covers two phases on the International Standard Classification of Education scale. Level 2 or lower secondary education (less commonly junior secondary education) is considered the second and final phase of basic education, and level 3 (upper) secondary education or senior secondary education is the stage before tertiary education. Every country aims to provide basic education, but the systems and terminology remain unique to them. Secondary education typically takes place after six years of primary education and is followed by higher education, vocational education or employment. In most countries secondary education is compulsory education, compulsory, at least until the age of 16. Children typically enter the lower secondary phase around age 12. Compulsory education sometimes extends to age 19. Since 1989, education has been seen as a basic human right for a child; Article 28, of the Convention on the Rights of the Child states that ... [...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 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 other plants. Description These plants range from in height. The flowers are usually yellow with a toothed tip, but may also be yellow-and-red bicolor. 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 75–80 species of ''Coreopsis'', all of which are native to North, Central, and South America. The name ''Coreopsis'' is derived from the Greek words κόρις (''koris''), meaning " bedbug", and ὄψις (''opsis''), meaning "view", referring to the shape of the achene. Taxonomy ''Coreopsis'' is a variable genus closely related to ''Bidens''. In fact, neither ''Coreopsis'' nor ''Bidens'', as defined in the 20th century, is strictly monophyletic. ''Coreopsis'' is best described ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pteridology
A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except the lycopods, and differ from mosses and other bryophytes 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. Ferns first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyperaceae
The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus ''Carex'' with over 2,000 species. These species are widely distributed, with the centers of diversity for the group occurring in tropical Asia and tropical South America. While sedges may be found growing in almost all environments, many are associated with wetlands, or with poor soils. Ecological communities dominated by sedges are known as sedgelands or sedge meadows. Some species superficially resemble the closely related 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 being the tule which has a round cross-section) and leaves that are spirally arranged in three ranks. In comparison, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Plata
La Plata () is the capital city of Buenos Aires Province, Argentina. According to the , it has a population of 654,324 and its metropolitan area, the Greater La Plata, has 787,294 inhabitants. It is located 9 kilometers (6 miles) inland from the southern shore of the Río de la Plata estuary. La Plata was planned and developed to serve as the provincial capital after the city of Buenos Aires was 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. The city is home to two important first division football teams: Estudiantes de La Plata and Gimnasia y Esgrima La Plata. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Morphology
Phytomorphology is the study of the morphology (biology), 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 Anatomy, 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 similarit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floristics
{{Short pages monitor ... [...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 A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ... contain disc florets in shades of orange, orange-red, purple, or cream. 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 - ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museum
A museum ( ; plural museums or, rarely, musea) is a building or institution that cares for and displays a collection of artifacts and other objects of artistic, cultural, historical, or scientific importance. Many public museums make these items available for public viewing through exhibits that may be permanent or temporary. The largest museums are located in major cities throughout the world, while thousands of local museums exist in smaller cities, towns, and rural areas. Museums have varying aims, ranging from the conservation and documentation of their collection, serving researchers and specialists, to catering to the general public. The goal of serving researchers is not only scientific, but intended to serve the general public. There are many types of museums, including art museums, natural history museums, science museums, war museums, and children's museums. According to the International Council of Museums (ICOM), there are more than 55,000 museums in 202 countrie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbarium
A herbarium (plural: herbaria) is a collection of preserved plant specimens and associated data used for scientific study. The specimens may be whole plants or plant parts; these will usually be in dried form mounted on a sheet of paper (called ''exsiccatum'', plur. ''exsiccata'') but, depending upon the material, may also be stored in boxes or kept in alcohol or other preservative. The specimens in a herbarium are often used as reference material in describing plant taxa; some specimens may be types. The same term is often used in mycology to describe an equivalent collection of preserved fungi, otherwise known as a fungarium. A xylarium is a herbarium specialising in specimens of wood. The term hortorium (as in the Liberty Hyde Bailey Hortorium) has occasionally been applied to a herbarium specialising in preserving material of horticultural origin. History The making of herbaria is an ancient phenomenon, at least six centuries old, although the techniques have changed l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
