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Boojum Tree
''Fouquieria columnaris'', the Boojum tree or ''cirio'' () is a tree in the ocotillo family,(Fouquieriaceae) whose other members include the ocotillos. Some taxonomists place it in the separate genus ''Idria''. It is nearly endemic to the Baja California Peninsula (both the northern and southern states), with only a small population in the Sierra Bacha of Sonora, Mexico. The plant's English name, Boojum, was given by Godfrey Sykes of the Desert Laboratory in Tucson, Arizona and is taken from Lewis Carroll's poem "The Hunting of the Snark". Description This plant is a columniform, upwardly tapering tree. The central axis of the plant is homologous to the single stem of other species. It has a cortical water-storage network, a feature unique to the family. The ''Fouquieria columnaris'' trunk is up to 24 inches (61 centimeters) thick, off-white in color, with few or no major branches and with numerous thin, twiggy branches sticking out at right angles, all covered with small lea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euphorbia Ampliphylla
''Euphorbia ampliphylla'' is a succulent rainforest tree of the montane rainforests throughout East Africa and belonging to the Spurge Family (Euphorbiaceae). The branches are succulent and three-winged and pachycaulous. Like most euphorbs, it has milky white sap. The toxicity of many euphorbs is well known, but no specific information is available concerning ''E. ampliphylla''. It is used locally for medical purposes. It is particularly noted for two things: It is the tallest of all known succulent plants, definitely up to and indicated on a carefully scaled diagram as reaching . It is also the world's only known succulent rainforest tree. As most other succulent members of the genus ''Euphorbia'', its trade is regulated under Appendix II of CITES CITES (shorter name for the Convention on International Trade in Endangered Species of Wild Fauna and Flora, also known as the Washington Convention) is a multilateral treaty to protect endangered plants and animals from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Taxon
In biology, a monotypic taxon is a taxonomic group ( taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1906 San Francisco Earthquake
At 05:12 Pacific Standard Time on Wednesday, April 18, 1906, the coast of Northern California was struck by a major earthquake with an estimated moment magnitude of 7.9 and a maximum Mercalli intensity of XI (''Extreme''). High-intensity shaking was felt from Eureka on the North Coast to the Salinas Valley, an agricultural region to the south of the San Francisco Bay Area. Devastating fires soon broke out in San Francisco and lasted for several days. More than 3,000 people died, and over 80% of the city was destroyed. The events are remembered as one of the worst and deadliest earthquakes in the history of the United States. The death toll remains the greatest loss of life from a natural disaster in California's history and high on the lists of American disasters. Tectonic setting The San Andreas Fault is a continental transform fault that forms part of the tectonic boundary between the Pacific Plate and the North American Plate. The strike-slip fault is characterize ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Francisco
San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17th most populous in the United States, with 815,201 residents as of 2021. It covers a land area of , at the end of the San Francisco Peninsula, making it the second most densely populated large U.S. city after New York City, and the fifth most densely populated U.S. county, behind only four of the five New York City boroughs. Among the 91 U.S. cities proper with over 250,000 residents, San Francisco was ranked first by per capita income (at $160,749) and sixth by aggregate income as of 2021. Colloquial nicknames for San Francisco include ''SF'', ''San Fran'', ''The '', ''Frisco'', and ''Baghdad by the Bay''. San Francisco and the surrounding San Francisco Bay Area are a global center of economic activity and the arts and sciences, spurred ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ploidy
Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Sets of chromosomes refer to the number of maternal and paternal chromosome copies, respectively, in each homologous chromosome pair, which chromosomes naturally exist as. Somatic cells, tissues, and individual organisms can be described according to the number of sets of chromosomes present (the "ploidy level"): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is often used to describe cells with three or more chromosome sets. Virtually all sexually reproducing organisms are made up of somatic cells that are diploid or greater, but ploidy level may vary widely between different organisms, between different tissues within the same organism, and at different stages in an organism's life cycle. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fouquieria Purpusii
''Fouquieria'' is a genus of 11 species of desert plants, the sole genus in the family Fouquieriaceae. The genus includes the ocotillo ('' F. splendens'') and the Boojum tree or cirio ('' F. columnaris''). They have semi succulent stems with thinner spikes projecting from them, with leaves on the bases spikes. They are unrelated to cacti and do not look much like them; their stems are proportionately thinner than cactus stems and their leaves are larger. Taxonomy Taxonomic history ''Fouquieria'' species do not have a particularly close resemblance to any other sort of plants; genetic evidence has shown they belong in the Ericales. Before this, they had been variously placed in the Violales or their own order, Fouquieriales. The Seri people identify three species of ''Fouquieria'' in their area of Mexico: ''jomjéeziz'' or ''xomjéeziz'' ('' F. splendens''), ''jomjéeziz caacöl'' ('' F. diguetii'', Baja California tree ocotillo), and ''cototaj'' ('' F. columnaris'', boo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fouquieria Fasciculata
''Fouquieria'' is a genus of 11 species of desert plants, the sole genus in the family Fouquieriaceae. The genus includes the ocotillo ('' F. splendens'') and the Boojum tree or cirio ('' F. columnaris''). They have semi succulent stems with thinner spikes projecting from them, with leaves on the bases spikes. They are unrelated to cacti and do not look much like them; their stems are proportionately thinner than cactus stems and their leaves are larger. Taxonomy Taxonomic history ''Fouquieria'' species do not have a particularly close resemblance to any other sort of plants; genetic evidence has shown they belong in the Ericales. Before this, they had been variously placed in the Violales or their own order, Fouquieriales. The Seri people identify three species of ''Fouquieria'' in their area of Mexico: ''jomjéeziz'' or ''xomjéeziz'' ('' F. splendens''), ''jomjéeziz caacöl'' ('' F. diguetii'', Baja California tree ocotillo), and ''cototaj'' ('' F. columnaris'', boo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fouquieria
''Fouquieria'' is a genus of 11 species of desert plants, the sole genus in the family Fouquieriaceae. The genus includes the ocotillo ('' F. splendens'') and the Boojum tree or cirio ('' F. columnaris''). They have semisucculent stems with thinner spikes projecting from them, with leaves on the bases spikes. They are unrelated to cacti and do not look much like them; their stems are proportionately thinner than cactus stems and their leaves are larger. Taxonomy Taxonomic history ''Fouquieria'' species do not have a particularly close resemblance to any other sort of plants; genetic evidence has shown they belong in the Ericales. Before this, they had been variously placed in the Violales or their own order, Fouquieriales. The Seri people identify three species of ''Fouquieria'' in their area of Mexico: ''jomjéeziz'' or ''xomjéeziz'' ('' F. splendens''), ''jomjéeziz caacöl'' ('' F. diguetii'', Baja California tree ocotillo), and ''cototaj'' ('' F. columnaris'', booj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fouquieria Columnaris 0zz
''Fouquieria'' is a genus of 11 species of desert plants, the sole genus in the family Fouquieriaceae. The genus includes the ocotillo ('' F. splendens'') and the Boojum tree or cirio ('' F. columnaris''). They have semi succulent stems with thinner spikes projecting from them, with leaves on the bases spikes. They are unrelated to cacti and do not look much like them; their stems are proportionately thinner than cactus stems and their leaves are larger. Taxonomy Taxonomic history ''Fouquieria'' species do not have a particularly close resemblance to any other sort of plants; genetic evidence has shown they belong in the Ericales. Before this, they had been variously placed in the Violales or their own order, Fouquieriales. The Seri people identify three species of ''Fouquieria'' in their area of Mexico: ''jomjéeziz'' or ''xomjéeziz'' ('' F. splendens''), ''jomjéeziz caacöl'' ('' F. diguetii'', Baja California tree ocotillo), and ''cototaj'' ('' F. columnaris'', boo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nectar
Nectar is a sugar-rich liquid produced by plants in glands called nectaries or nectarines, either within the flowers with which it attracts pollinating animals, or by extrafloral nectaries, which provide a nutrient source to animal mutualists, which in turn provide herbivore protection. Common nectar-consuming pollinators include mosquitoes, hoverflies, wasps, bees, butterflies and moths, hummingbirds, honeyeaters and bats. Nectar plays a crucial role in the foraging economics and evolution of nectar-eating species; for example, nectar foraging behavior is largely responsible for the divergent evolution of the African honey bee, ''A. m. scutellata'' and the western honey bee. Nectar is an economically important substance as it is the sugar source for honey. It is also useful in agriculture and horticulture because the adult stages of some predatory insects feed on nectar. For example, a number of parasitoid wasps (e.g. the social wasp species '' Apoica flavissima'') ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stigma (botany)
The stigma () is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. Description The stigma, together with the style and ovary (typically called the stigma-style-ovary system) comprises the pistil, which is part of the gynoecium or female reproductive organ of a plant. The stigma itself forms the distal portion of the style, or stylodia, and is composed of , the cells of which are receptive to pollen. These may be restricted to the apex of the style or, especially in wind pollinated species, cover a wide surface. The stigma receives pollen and it is on the stigma that the pollen grain germinates. Often sticky, the stigma is adapted in various ways to catch and trap pollen with various hairs, flaps, or sculpturings. The pollen may be captured from the air (wind-borne pollen, anemophily), from visiting insects or other animals (biotic pollination), or in rare cases from surrounding water ( hydrophily). Stigma can vary from long an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
