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Derbesiaceae
Derbesiaceae are a family of green algae in the order Bryopsidales Bryopsidales is an order of green algae, in the class Ulvophyceae. It is a diverse group of mostly marine macroalgae. Characteristics The thallus is filamentous, highly branched, and may be packed into a mass. It is coenocytic, having multi-nu .... References Ulvophyceae families Bryopsidales {{green algae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryopsidales
Bryopsidales is an order of green algae, in the class Ulvophyceae. It is a diverse group of mostly marine macroalgae. Characteristics The thallus is filamentous, highly branched, and may be packed into a mass. It is coenocytic, having multi-nucleate cells consisting of cytoplasm contained within a cylindrical cell wall. There are no septae, and the many discoid chloroplasts, nuclei and other organelles are free to move through the organism. The whole organism may consist of a single cell; in the genus '' Caulerpa'', this single cell may be several metres across. In the genus ''Halimeda'', whole seabed meadows may consist of an individual, single-celled organism connected by filamentous threads running through the substrate. Reproduction Propagation is normally vegetative from small fragments which grow into new individuals. Under certain conditions, sexual reproduction occurs in a process called ''holocarpy''. Almost all of the cytoplasm in the thallus is converted into bifla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derbesia
''Derbesia'' is a genus of green algae in the family Derbesiaceae. The plant was originally known from different names applied to its larger sporophyte, ''Derbesia'', and its less conspicuous gametophyte A gametophyte () is one of the two alternating multicellular phases in the life cycles of plants and algae. It is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. The gametophyte is the se ..., ''Halicystis''. ''Derbesia'' was successfully cultured in the laboratories of German phycologist Peter Kornmann to learn that both it and the plant ''Halicystis'' were different parts of the life cycle of the same organism. The genus name of ''Derbesia'' is in honour of Auguste Alphonse Derbès (1818–1894), French naturalist, zoologist and botanist, Professor of Natural Sciences at the University of Aix-Marseille. List of species * '' Derbesia attenuata'' * '' Derbesia boergesenii'' * '' Derbesia corallicola'' * '' Derbes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pedobesia
''Pedobesia'' is a genus of green algae in the family Derbesiaceae. Species within this genus can be found in New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla .... References Ulvophyceae genera Bryopsidales {{green algae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Algae
The green algae (: green alga) are a group of chlorophyll-containing autotrophic eukaryotes consisting of the phylum Prasinodermophyta and its unnamed sister group that contains the Chlorophyta and Charophyta/ Streptophyta. The land plants ( Embryophytes) have emerged deep within the charophytes as a sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to include them. The completed clade that includes both green algae and embryophytes is monophyletic and is referred to as the clade Viridiplantae and as the kingdom Plantae. The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid (spherical), and filamentous forms, and macroscopic, multicellular seaweeds. There are about 22,000 species of green algae, many of which live most of their lives as single cells, while other species form coenobia (colonies), long filaments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulvophyceae Families
The Ulvophyceae or ulvophytes are a class of green algae, distinguished mainly on the basis of ultrastructural morphology, life cycle and molecular phylogenetic data. The sea lettuce, ''Ulva'', belongs here. Other well-known members include '' Caulerpa'', '' Codium'', '' Acetabularia'', '' Cladophora'', '' Trentepohlia'' and '' Monostroma''. The Ulvophytes are diverse in their morphology and their habitat. Most are seaweeds such as those listed above. Others, such as '' Rhizoclonium'', '' Pithophora'' and some species of '' Cladophora'' live in fresh water and in some areas are considered weeds. Morphology Ulvophycean algae are diverse in morphology. The thalli are typically colonial (some are unicellular). A few taxa have flagella in their vegetative stage, such as '' Oltmannsiellopsis''. Common forms include filaments (both unbranched and branched), tubular and blade-like thalli (such as in ''Ulva''), and siphonous thalli. Siphonous thalli are composed of a single gian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
