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Siparuna Vasqueziana
''Siparuna vasqueziana'' is an evergreen dioecious shrub which grows to 5 m in height. It is found in primary forest habitats in Amazonian Peru. It can be distinguished from all other ''Siparuna'' species by its yellow flowers with exceptionally long tepal A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e. of very ...s. References New species of ''Siparuna'' Siparunaceae Dioecious plants Plants described in 2000 {{Laurales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Susanne Renner
Susanne Sabine Renner is a German botanist. She is professor of biology at the Ludwig Maximilian University of Munich as well as director of the Botanische Staatssammlung München and the Botanischer Garten München-Nymphenburg. Education Renner received her M.Sc. degree in biology in 1980 and her Ph.D. in 1984, both from the University of Hamburg. She qualified as Professor in Systematic Botany in 1992. Career From 1987 to 1992 Renner was associate professor at the Botanical Institute at the University of Aarhus. From 1993 to 1996 she was Professor at the Johannes Gutenberg University Mainz. From 1996 to 2006 she was professor at the University of Missouri-St. Louis, affiliated with one of the largest botanical gardens worldwide, the Missouri Botanical Garden. Since 2003 she is professor for systematic botany at the Ludwig Maximilian University of Munich as well as director of the Botanische Staatssammlung München, the Botanischer Garten München-Nymphenburg and the University ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerlinde Hausner
663 Gerlinde is a minor planet orbiting the Sun The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared rad .... References External links Lightcurve plot of 663 Gerlinde Palmer Divide Observatory, '' B. D. Warner'' (2005) Asteroid Lightcurve Database (LCDB) query form) Dictionary of Minor Planet Names Google books – Observatoire de Genève, Raoul Behrend – Minor Planet Center * * Background asteroids Gerlinde Gerlinde X-type asteroids (Tholen) 19080624 {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evergreen
In botany, an evergreen is a plant which has foliage that remains green and functional through more than one growing season. This also pertains to plants that retain their foliage only in warm climates, and contrasts with deciduous plants, which completely lose their foliage during the winter or dry season. Evergreen species There are many different kinds of evergreen plants, both trees and shrubs. Evergreens include: *Most species of conifers (e.g., pine, hemlock, blue spruce, and red cedar), but not all (e.g., larch) * Live oak, holly, and "ancient" gymnosperms such as cycads *Most angiosperms from frost-free climates, and rainforest trees *All Eucalypts * Clubmosses and relatives *Bamboos The Latin binomial term , meaning "always green", refers to the evergreen nature of the plant, for instance :'' Cupressus sempervirens'' (a cypress) :'' Lonicera sempervirens'' (a honeysuckle) :'' Sequoia sempervirens'' (a sequoia) Leaf longevity in evergreen plants varies from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dioecious
Dioecy (; ; adj. dioecious , ) is a characteristic of a species, meaning that it has distinct individual organisms (unisexual) that produce male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproduction is biparental reproduction. Dioecy has costs, since only about half the population directly produces offspring. It is one method for excluding self-fertilization and promoting allogamy (outcrossing), and thus tends to reduce the expression of recessive deleterious mutations present in a population. Plants have several other methods of preventing self-fertilization including, for example, dichogamy, herkogamy, and self-incompatibility. Dioecy is a dimorphic sexual system, alongside gynodioecy and androdioecy. In zoology In zoology, dioecious species may be opposed to hermaphroditic species, meaning that an individual is either male or female, in which case the synonym gonochory is more often used. Most animal species are dio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shrub
A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple stems and shorter height, less than tall. Small shrubs, less than 2 m (6.6 ft) tall are sometimes termed as subshrubs. Many botanical groups have species that are shrubs, and others that are trees and herbaceous plants instead. Some definitions state that a shrub is less than and a tree is over 6 m. Others use as the cut-off point for classification. Many species of tree may not reach this mature height because of hostile less than ideal growing conditions, and resemble a shrub-sized plant. However, such species have the potential to grow taller under the ideal growing conditions for that plant. In terms of longevity, most shrubs fit in a class between perennials and trees; some may only last about fiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Primary Forest
An old-growth forestalso termed primary forest, virgin forest, late seral forest, primeval forest, or first-growth forestis a forest that has attained great age without significant disturbance, and thereby exhibits unique ecological features, and might be classified as a climax community. The Food and Agriculture Organization of the United Nations defines primary forests as naturally regenerated forests of native tree species where there are no clearly visible indications of human activity and the ecological processes are not significantly disturbed. More than one-third (34 percent) of the world's forests are primary forests. Old-growth features include diverse tree-related structures that provide diverse wildlife habitat that increases the biodiversity of the forested ecosystem. Virgin or first-growth forests are old-growth forests that have never been logged. The concept of diverse tree structure includes multi-layered canopies and canopy gaps, greatly varying tree hei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amazon Basin
The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries of Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela. Most of the basin is covered by the Amazon rainforest, also known as Amazonia. With a area of dense tropical forest, this is the largest rainforest in the world. Geography The Amazon River begins in the Andes Mountains at the west of the basin with its main tributary the Marañón River and Apurimac River in Peru. The highest point in the watershed of the Amazon is the second biggest peak of Yerupajá at . With a length of about before it drains into the Atlantic Ocean, it is one of the two longest rivers in the world. A team of scientists has claimed that the Amazon is longer than the Nile, but debate about its exact length continues. The Amazon sys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peru
, image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Firm and Happy for the Union" , national_anthem = "National Anthem of Peru" , march = "March of Flags" , image_map = PER orthographic.svg , map_caption = , image_map2 = , capital = Lima , coordinates = , largest_city = capital , official_languages = Peruvian Spanish, Spanish , languages_type = Co-official languages , languages = , ethnic_groups = , ethnic_groups_year = 2017 , demonym = Peruvians, Peruvian , government_type = Unitary state, Unitary Semi-presidential system, semi-presidential republic , leader_title1 = President of Peru, President ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siparuna
''Siparuna'' is a genus of plants belonging to the family Siparunaceae. These aromatic evergreen trees and shrubs are found throughout the Neotropical realm. Over 70 species have been described. Species Species include: *'' Siparuna aspera'' *'' Siparuna calantha'' *'' Siparuna campii'' *'' Siparuna cascada'' *'' Siparuna cervicornis'' *'' Siparuna conica'' *''Siparuna cristata'' *'' Siparuna croatii'' *'' Siparuna cuspidata'' *''Siparuna decipiens'' *''Siparuna echinata'' *'' Siparuna eggersii'' *'' Siparuna gentryana'' *''Siparuna gesnerioides'' *''Siparuna gigantotepala'' *''Siparuna grandiflora'' *'' Siparuna guajalitensis'' *''Siparuna guianensis'' *''Siparuna harlingii'' *''Siparuna hispida'' *''Siparuna laurifolia'' *''Siparuna lepidota'' *'' Siparuna lozaniana'' *''Siparuna macrotepala ''Siparuna'' is a genus of plants belonging to the family Siparunaceae. These aromatic evergreen trees and shrubs are found throughout the Neotropical realm. Over 70 species have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechanism for the union of sperm with eggs. Flowers may facilitate outcrossing (fusion of sperm and eggs from different individuals in a population) resulting from cross-pollination or allow selfing (fusion of sperm and egg from the same flower) when self-pollination occurs. There are two types of pollination: self-pollination and cross-pollination. Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is when pollen is transferred from the anther of one flower to the stigma of another flower on a different individual of the same species. Self-pollination happens in flowers where the stamen and carpel mature at the same time, and are positione ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tepal
A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e. of very similar appearance), as in '' Magnolia'', or because, although it is possible to distinguish an outer whorl of sepals from an inner whorl of petals, the sepals and petals have similar appearance to one another (as in ''Lilium''). The term was first proposed by Augustin Pyramus de Candolle in 1827 and was constructed by analogy with the terms "petal" and "sepal". (De Candolle used the term ''perigonium'' or ''perigone'' for the tepals collectively; today, this term is used as a synonym for ''perianth''.) p. 39. Origin Undifferentiated tepals are believed to be the ancestral condition in flowering plants. For example, '' Amborella'', which is thought to have separated earliest in the evolution of flowering plants, has flowers with undi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siparunaceae
Siparunaceae is a family of flowering plants in the magnoliid order Laurales. It consists of two genera of woody plants, with essential oils: ''Glossocalyx'' in West Africa and ''Siparuna'' in the neotropics. ''Glossocalyx'' is monospecific (''Glossocalyx longicuspis'') and ''Siparuna'' has about 74 known species. Until the 1990s, most taxonomists placed ''Glossocalyx'' and ''Siparuna'' in the family Monimiaceae. The monograph of Monimiaceae by William R. Philipson in 1993 was the last major work to do so. In the 1990s, molecular phylogenetic studies of DNA sequences showed that Monimiaceae, as then circumscribed, was paraphyletic. When the Angiosperm Phylogeny Group published their APG system in 1998, the old Monimiaceae was divided into three separate families: Siparunaceae, Atherospermataceae, and Monimiaceae sensu stricto. This classification remained unchanged in the APG III system of 2009 and the APG IV system of 2016. The families Siparunaceae, Gomortegaceae, and Ather ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
