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Lithophylloideae
The Lithophylloideae are a monophyletic subfamily of Corallinaceaen Coralline algae with uniporate conceptacle Conceptacles are specialized cavities of marine and freshwater algae that contain the reproductive organs. They are situated in the receptacle and open by a small ostiole.Boney, A.D. (1969). ''A Biology of Marine Algae''. Hutchinson Educational Ltd ...s. References Bikont subfamilies Corallinaceae {{rhodophyta-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corallinaceae
The Corallinaceae are one of the two extant Coralline families of red algae; they are differentiated from the morphologically similar Sporolithaceae by their formation of grouped sporangial chambers, clustered into sori. The Corallinoideae is monophyletic; the other subfamilies form another monophyletic group. Genera The following genera are listed in the World Register of Marine Species: *Subfamily Amphiroideae **Genus ''Amphiroa'' J.V. Lamouroux, 1812 **Genus '' Lithothrix'' J.E. Gray, 1867 *Subfamily Corallinoideae **Genus '' Alatocladia'' (Yendo) Johansen, 1969 **Genus '' Arthrocardia'' Decaisne, 1842 **Genus '' Bossiella'' P.C. Silva, 1957 **Genus '' Calliarthron'' Manza, 1937 **Genus '' Cheilosporum'' (Decaisne) Zanardini, 1844 **Genus '' Chiharaea'' Johansen, 1966 **Genus '' Corallina'' Linnaeus, 1758 **Genus '' Ellisolandia'' **Genus '' Haliptilon'' (Decaisne) Lindley, 1846 **Genus '' Jania'' J.V. Lamouroux, 1812 **Genus '' Marginisporum'' (Yendo) Ganesan, 1968 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphiroa
''Amphiroa'' is a genus of thalloid red algae comprising 55 species. Specimens can reach around 30 cm in size. The thalli take a crustose form; dichotomous branches are formed. The organisms possess secondary pit connections. ''Amphiroa'' reproduces by means of conceptacles; it produces tetraspores. Its pore canals are lined with parallel filaments; the morphology of the pore canal is a key trait used to delineate species within the genus. Species The valid species currently considered to belong to this genus are: # ''Amphiroa anastomosans'' Weber Bosse # ''Amphiroa anceps'' (Lamarck) Decaisne # ''Amphiroa annobonensis'' Pilger # ''Amphiroa annulata'' Me.Lemoine # ''Amphiroa articulata'' (Bory) Athanasiadis # ''Amphiroa beauvoisii'' J.V.Lamouroux # ''Amphiroa bowerbankii'' Harvey # ''Amphiroa brasiliana'' Decaisne # ''Amphiroa breviarticulata'' Areschoug # ''Amphiroa canaliculata'' G.Martens # ''Amphiroa capensis'' Areschoug # ''Amphiroa compressa'' M.Lemoine # ''Amph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coralline Alga
Coralline algae are red algae in the order Corallinales. They are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls. The colors of these algae are most typically pink, or some other shade of red, but some species can be purple, yellow, blue, white, or gray-green. Coralline algae play an important role in the ecology of coral reefs. Sea urchins, parrot fish, and limpets and chitons (both mollusks) feed on coralline algae. In the temperate Mediterranean Sea, coralline algae are the main builders of a typical algal reef, the ''Coralligène'' ("coralligenous"). Many are typically encrusting and rock-like, found in marine waters all over the world. Only one species lives in freshwater. Unattached specimens (maerl, rhodoliths) may form relatively smooth compact balls to warty or fruticose thalli. A close look at almost any intertidal rocky shore or coral reef will reveal an abundance of pink to pinkish-grey patches, distributed thro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ezo (alga)
(also spelled Yezo or Yeso) is the Japanese term historically used to refer to the people and the lands to the northeast of the Japanese island of Honshu. This included the northern Japanese island of Hokkaido, which changed its name from "Ezo" to "Hokkaidō" in 1869, Nussbaum, Louis-Frédéric. (2005)"Ezo"in ''Japan Encyclopedia'', p. 184. and sometimes included Sakhalin and the Kuril Islands. In reference to the people of that region, the same two kanji used to write the word ''Ezo'' can also be read ''Emishi''. The descendants of these people are most likely related to the Ainu people of today. Etymology Japanese sources that include an etymology describe ''Ezo'' as probably originally a borrowing from the Ainu word meaning . The term is first attested in Japanese in a text from 1153 in reference to any of the non-Japanese people living in the northeast of Honshū, and then later in 1485 in reference to the northern islands where these people lived, primarily Hokkai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithophyllum
''Lithophyllum'' is a genus of thalloid red algae belonging to the family Corallinaceae. Fossil record This genus is known in the fossil record from the Silurian to the Quaternary (from about 418.7 to 0.0 million years ago). Fossils of species within this genus have been found in Europe, United States, South America, Egypt, Iran, Iraq, India, Japan and Australia. Description The monomerous, crustose thalli are composed of a single system of filaments which grow close to the underlying surface. ''Lithophyllum'' reproduces by means of conceptacles. The epithallus is periodically shed to avoid organisms growing on top of the alga. Species The valid species currently considered to belong to this genus are: *''Lithophyllum acanthinum'' Foslie, 1907 *''Lithophyllum accedens'' Foslie, 1907 *''Lithophyllum acrocamptum'' Heydrich, 1902 *''Lithophyllum aequum'' Foslie, 1907 *''Lithophyllum albanense'' Lemoine, 1924 *'' Lithophyllum almanense'' Lemoine, 1920 *''Lithop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conceptacle
Conceptacles are specialized cavities of marine and freshwater algae that contain the reproductive organs. They are situated in the receptacle and open by a small ostiole.Boney, A.D. (1969). ''A Biology of Marine Algae''. Hutchinson Educational Ltd, London Conceptacles are present in Corallinaceae,Irvine, L.M. and Chamberlain, Y.M. (1994). ''Seaweeds of the British Isles''. Volume 1, Part 2B. Natural History Museum, London. and Hildenbrandiales, as well as the brown Fucales. In the Fucales there is no haploid phase in the reproductive cycle and therefore no alternation of generations.Fritsch, F.E. (1945). ''The Structure and Reproduction of the Algae''. Vol 2. Cambridge University Press, Cambridge The thallus is a sporophyte.Smith, G.M. (1938). ''Cryptogamic Botany. Algae and Fungi''. Second edition, Volume ''1'', McGraw-Hill Bok Company, Inc. The diploid plants produce male (antheridia) and female (oogonia) gametangia by meiosis. The gametes are released into the surrounding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bikont Subfamilies
A bikont ("two flagella") is any of the eukaryotic organisms classified in the group Bikonta. Many single-celled members of the group, and the presumed ancestor, have two flagella. Enzymes Another shared trait of bikonts is the fusion of two genes into a single unit: the genes for thymidylate synthase (TS) and dihydrofolate reductase (DHFR) encode a single protein with two functions. The genes are separately translated in unikonts. Relationships Some research suggests that a unikont (a eukaryotic cell with a single flagellum) was the ancestor of opisthokonts (Animals, Fungi, and related forms) and Amoebozoa, and a bikont was the ancestor of Archaeplastida (Plants and relatives), Excavata, Rhizaria, and Chromalveolata. Cavalier-Smith has suggested that Apusozoa, which are typically considered ''incertae sedis'', are in fact bikonts. Relationships within the bikonts are not yet clear. Cavalier-Smith has grouped the Excavata and Rhizaria into the Cabozoa and the Archaeplastida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
