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Praecereus
''Praecereus'' is genus of cactus A cactus (: cacti, cactuses, or less commonly, cactus) is a member of the plant family Cactaceae (), a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. The word ''cactus'' derives, through Latin, .... It is sometimes included in the genus '' Cereus''. Description Plants have a bushy to tree-like species that are sometimes stretched out, mostly freely branched and reach a height of up to 6 meters. The slender, columnar to hanging shoots have 7 or more ribs with protruding, round and gray areoles from which needle-like or umbilical thorns arise. The robust, funnel- to bell-shaped flowers are white to yellowish green and open during the day. Its strong flower cup and flower tube are thick-walled, fleshy and often curved. The fleshy, short, ovoid fruits that split open lengthwise are red with a persistent flower residue and contain white flesh. The black, bumpy seeds are oblong and ovoid and some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praecereus Euchlorus (F
''Praecereus euchlorus'' is a flowering plant in the family Cactaceae that is found in Brazil, Bolivia and Paraguay at elevations of 700 to 1300 meters Description ''Praecereus euchlorus'' initially grows slightly upright, is less branched and later bent over and leaning in sympathy. The slender shoots are up to 5 meters long. There are 4 to 14 low and sharp-edged ribs. The up to 20 thorns are weak, whitish, needlelike and often very unevenly long. The up to 4 middle spines, which may be missing, are up to 5 (rarely to 7.5) inches long. The much shorter edge spines have a length of 5 to 10 (rarely to 15) millimeters. The white to greenish white flowers are up to 8 centimeters long. Their pericarpell and the flower tube are covered with very little scales and otherwise bald. The fruits are elongated. Subspecies Accepted Subspecies: * ''Praecereus euchlorus'' subsp. ''amazonicus'' * ''Praecereus euchlorus'' subsp. ''diffusus'' * ''Praecereus euchlorus'' subsp. ''euchlorus'' * '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praecereus Saxicola
''Praecereus saxicola'' is a flowering plant in the family Cactaceae that is found in Bolivia, Argentina and Paraguay Description Praecereus saxicola grows shrubby with sparsely to well branched, upright to spreading, blue green stems of 1.5 to 3 centimeters in diameter. There are 6 to 9 ribs available. The 1 to 5 needle-like middle spines are up to 1.5 inches long. The 6 to 9 needles are white and have a black tip. They are 2 to 6 millimeters long. The greenish-white flowers are up to 12 centimeters long. The fruits have diameters of up to 3 centimeters. Distribution ''Praecereus saxicola'' is widespread in southwestern Brazil and northeastern Argentina at altitudes of 300 to 900 meters. Taxonomy The first description as ''Cereus saxicola'' was published in 1893 by Thomas Morong. The specific epithet saxicola is derived from the Latin words saxum for 'rock' and -cola for '-dwelling' and refers to the rocky habitat of the species. Nigel Paul Taylor placed the species in the gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praecereus
''Praecereus'' is genus of cactus A cactus (: cacti, cactuses, or less commonly, cactus) is a member of the plant family Cactaceae (), a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. The word ''cactus'' derives, through Latin, .... It is sometimes included in the genus '' Cereus''. Description Plants have a bushy to tree-like species that are sometimes stretched out, mostly freely branched and reach a height of up to 6 meters. The slender, columnar to hanging shoots have 7 or more ribs with protruding, round and gray areoles from which needle-like or umbilical thorns arise. The robust, funnel- to bell-shaped flowers are white to yellowish green and open during the day. Its strong flower cup and flower tube are thick-walled, fleshy and often curved. The fleshy, short, ovoid fruits that split open lengthwise are red with a persistent flower residue and contain white flesh. The black, bumpy seeds are oblong and ovoid and some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cactus
A cactus (: cacti, cactuses, or less commonly, cactus) is a member of the plant family Cactaceae (), a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. The word ''cactus'' derives, through Latin, from the Ancient Greek word (''káktos''), a name originally used by Theophrastus for a spiny plant whose identity is now not certain. Cacti occur in a wide range of shapes and sizes. They are native to the Americas, ranging from Patagonia in the south to parts of western Canada in the north, with the exception of ''Rhipsalis baccifera'', which is also found in Africa and Sri Lanka. Cacti are adapted to live in very dry environments, including the Atacama Desert, one of the driest places on Earth. Because of this, cacti show many adaptations to conserve water. For example, almost all cacti are succulents, meaning they have thickened, fleshy parts adapted to store water. Unlike many other succulents, the stem is the only part of most cacti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cereus (plant)
''Cereus'' ( "serious") is a genus of Cactus, cacti (family Cactaceae) including around 33 species of large columnar cacti from South America. The name is derived from Greek language, Greek (κηρός) and Latin words meaning "wax", "torch" or "candle". ''Cereus'' was one of the first cactus genera to be described; the circumscription varies depending on the authority. The term "cereus" is also sometimes used for a ceroid cactus, any cactus with a very elongated body, including columnar growth cacti and epiphytic cacti. Description ''Cereus'' are shrubby or treelike, often attaining great heights (''Cereus hexagonus, C. hexagonus, Cereus lamprospermus, C. lamprospermus, Cereus trigonodendron, C. trigonodendron'', ''Cereus ingens, C. ingens'' up to ). Most stems are angled or distinctly ribbed, ribs long, usually well developed and have large areoles, usually bearing spines. Cephalium is not present; ''Cereus mortensenii, C. mortensenii'' develops pseud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
