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Peltandreae
Peltandreae is a tribe of plants in the arum family. Distribution The distribution is disjunct. ''Peltandra'' is native to Eastern North America and the Caribbean (Canada, USA, Cuba) and ''Typhonodorum'' is native to Africa (the Comoros, Madagascar, Mauritius, Tanzania). Taxonomy Taxonomic history The tribe was first described in 1876 by the German botanist Heinrich Gustav Adolf Engler (Engl.). Engler placed ''Typhonodorum'' in a separate tribe Typhonodoreae.Engler, A. (1876)"Vergleichende Untersuchungen über die morphologischen Verhältnisse der Araceae (Vol. 3)."Druck von E. Blochmann & Sohn für die Akademie in Commission bei Wilh. Engelmann in Leipzig.Boodle, L. A., & HILL, A. W. (1929)"''Typhonodorum lindleyanum'': The development of the embryo and germination of the seed."Annals of Botany, 43(171), 437-450.Engler, A. (1915)"Araceae-Philodendroideae-Anubiadeae, Aglaonemateae, Dieffenbachieae, Zantedeschieae, Typhonodoreae, Peltandreae."/ref> However, it is now included ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ambrosina Bassii (16636137351)
''Ambrosina'' is a genus in the family Araceae that consists of only one species, ''Ambrosina bassii'', and the only genus in the tribe Ambrosineae. This species is the smallest aroid in the Mediterranean, growing only to 8 cm tall. It is usually found growing in woodlands on north faces of hillsides and in humus soil that is covering limestone. It is distributed in Sardinia, Corsica, Sicily, southern mainland Italy, Tunisia, and Algeria. Description ''Ambrosina bassii'' has oval leaves that are 3.5 to 6 cm long and resemble the leaves of many aroid seedlings. The inflorescence is 2.5 cm long bent over and has an unusual spathe. The spathe is shaped like an egg and is greenish brown with dots on it. Inside the egg shaped spathe is divided two chambers. In one chamber is contained a single female flower and in the other are 8 to 10 male flowers. The seeds have an elaiosome.Bown, Deni (2000). ''Aroids: Plants of the Arum Family''. Timber Press. . Howe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aroideae
Aroideae is a subfamily of flowering plants in the family Araceae. It is the largest subfamily in Araceae and consists of about 72 different genera, and 2,300 species. Many Aroideae have spiny pollen grains without a sporopollenin outer exine layer and lacking an aperture. Genera Taxonomy May be subdivided into a series of twenty five tribes: * Aglaonemateae * Anubiadeae * Areae * Arisaemateae * Arisareae * Arophyteae * Caladieae * Callopsideae * Colocasieae * Cryptocoryneae * Culcasieae * Homalomeneae * Nephthytideae * Peltandreae * Philodendreae * Philonotieae * Pistieae * Schismatoglottideae * Spathicarpeae * Stylochaetoneae * Thomsonieae * Zantedeschieae ''Zantedeschia'' is a genus of eight species of herbaceous, perennial plant, perennial, flowering plants in the family (biology), family Araceae, native plant, native to southern Africa from South Africa north to Malawi. The genus has been intr ... References * Bown, Deni (2000). ''Aroids: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', " chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Ear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victoria Botanical Garden
The National Botanical Garden of Seychelles (also known as Victoria Botanical Garden and Mont Fleuri Botanical Garden) in Mahé, Seychelles. History The garden was founded in 1901 by Mauritian agronomist Paul Evenor Rivalz Dupont, who served as the Director of Agricultural Services and Naturalist of Seychelles, with the aim of creating an agricultural station. As of March 2024 the botanical garden accommodate both departments of Seychelles' Ministry of Agriculture, Climate Change & Environment: the Department of Climate Change & Energy, and the Department of Environment, which is also tasked with overseeing the management of the place. Research The main objective of the garden is to function as a central hub for the preservation and study of biodiversity, featuring an arboretum An arboretum (plural: arboreta) in a general sense is a botanical collection composed exclusively of trees of a variety of species. Originally mostly created as a section in a larger garden or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peltandra
''Peltandra'', the arrow arums, is a genus of plants in the family Araceae. It is native to the eastern United States, eastern Canada, and Cuba. ;Species # '' Peltandra sagittifolia'' - (Michx.) Morong - Spoon flower or the white arrow arum - southeastern US from eastern Louisiana to Virginia # ''Peltandra virginica'' (L.) Schott - Arum arrow - Cuba, Quebec, Ontario, Oregon, California, Washington; eastern US from Maine to Florida, west to Texas, Kansas, and Minnesota # †''Peltandra primaeva'' – Eocene, Golden Valley Formation The Golden Valley Formation is a stratigraphic unit of Late Paleocene to Early Eocene age in the Williston Basin of North Dakota.Hickey, 1977 It is present in western North Dakota and was named for the city of Golden Valley by W.E. Benson and W.M. ..., North Dakota, USA References Aroideae Araceae genera Flora of North America {{Araceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Typhonodorum
''Typhonodorum'' is a monotypic genus of flowering plants in the family Araceae. The single species making up this genus is ''Typhonodorum lindleyanum''. The genus is native to Madagascar, the Comores, Zanzibar, Réunion and Mauritius. This genus is believed to be closely related to ''Peltandra'' even though ''Peltandra'' is only found in North America and there don't appear to exist closely related genera in the Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...n mainland. There isn't fossil evidence to link the two genera so it has been proposed that there once was a genus in Africa from which the two genera had originated. The African mainland genus spread to North America and to Madagascar 50 million years ago before it broke off. Then the African genus became extinct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tribe (biology)
In biology, a tribe is a taxonomic rank above genus, but below family (biology), family and subfamily. It is sometimes subdivided into subtribes. By convention, all taxonomic ranks from genus upwards are capitalized, including both tribe and subtribe. In zoology, the standard ending for the name of a zoological tribe is "-ini". Examples include the tribes Goat-antelope#Tribe Caprini, Caprini (goat-antelopes), Hominini (hominins), Bombini (bumblebees), and Thunnini (tunas). The tribe Hominini is divided into subtribes by some scientists; subtribe Hominina then comprises "humans". The standard ending for the name of a zoological subtribe is "-ina". In botany, the standard ending for the name of a botanical tribe is "-eae". Examples include the tribes Acalypheae and Scilloideae#Hyacintheae, Hyacintheae. The tribe Hyacintheae is divided into subtribes, including the subtribe Massoniinae. The standard ending for the name of a botanical subtribe is "-inae". In bacteriology, the form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araceae
The Araceae are a family of monocotyledonous flowering plants in which flowers are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe (or leaf-like bract). Also known as the arum family, members are often colloquially known as aroids. This family of 114 genera and about 3,750 known species is most diverse in the New World tropics, although also distributed in the Old World tropics and northern temperate regions. Description Within the Araceae, species are often rhizomatous or tuberous; many are epiphytic, creeping lianas or vining plants, and the leaves and tissues of the entire plant nearly always contains irritating calcium oxalate crystals or raphides, in varying degrees. The foliage can vary considerably from species to species. The majority of species produce an inflorescence consisting of a spadix (which some compare to a corn cob, in appearance), which is nearly always surr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinrich Gustav Adolf Engler
Heinrich Gustav Adolf Engler (25 March 1844 – 10 October 1930) was a German botanist. He is notable for his work on plant taxonomy and phytogeography, such as ''Die natürlichen Pflanzenfamilien'' (''The Natural Plant Families''), edited with Karl A. E. von Prantl. Even now, his system of plant classification, the Engler system, is still used by many herbaria and is followed by writers of many manuals and floras. It is still the only system that treats all 'plants' (in the wider sense, algae to flowering plants) in such depth. Engler published a prodigious number of taxonomic works. He used various artists to illustrate his books, notably Joseph Pohl (1864–1939), an illustrator who had served an apprenticeship as a wood-engraver. Pohl's skill drew Engler's attention, starting a collaboration of some 40 years. Pohl produced more than 33 000 drawings in 6 000 plates for ''Die naturlichen Pflanzenfamilien''. He also illustrated ''Das Pflanzenreich'' (1900–1953), ''Die Pflanz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Clock
The molecular clock is a figurative term for a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged. The biomolecular data used for such calculations are usually nucleotide sequences for DNA, RNA, or amino acid sequences for proteins. The benchmarks for determining the mutation rate are often fossil or archaeological dates. The molecular clock was first tested in 1962 on the hemoglobin protein variants of various animals, and is commonly used in molecular evolution to estimate times of speciation or radiation. It is sometimes called a gene clock or an evolutionary clock. Early discovery and genetic equidistance The notion of the existence of a so-called "molecular clock" was first attributed to Émile Zuckerkandl and Linus Pauling who, in 1962, noticed that the number of amino acid differences in hemoglobin between different lineages changes roughly linearly with time, as estimated from fossil ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
