Coleochaetaceae | |
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Coleochaete sp. | |
Scientific classification | |
(unranked): | Viridiplantae |
(unranked): | Charophyta |
Class: | Coleochaetophyceae |
Order: | Coleochaetales Chadefaud [1] |
Family: | Coleochaetaceae Nägeli [2] |
Genera [2] | |
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Coleochaetaceae is a family of algae. [2] It is the only family in the Coleochaetales, [1] an order of parenchymous charophyte algae, [3] that includes some of the closest multicellular relatives of land plants. [4] [5] They questionably include the fossil genus Parka .
The Chlorophyceae are one of the classes of green algae, distinguished mainly on the basis of ultrastructural morphology. They are usually green due to the dominance of pigments chlorophyll a and chlorophyll b. The chloroplast may be discoid, plate-like, reticulate, cup-shaped, spiral- or ribbon-shaped in different species. Most of the members have one or more storage bodies called pyrenoids located in the chloroplast. Pyrenoids contain protein besides starch. Some green algae may store food in the form of oil droplets. They usually have a cell wall made up of an inner layer of cellulose and outer layer of pectose.
The glaucophytes, also known as glaucocystophytes or glaucocystids, are a small group of unicellular algae found in freshwater and moist terrestrial environments, less common today than they were during the Proterozoic. The stated number of species in the group varies from about 14 to 26. Together with the red algae (Rhodophyta) and the green algae plus land plants, they form the Archaeplastida.
Sykidion is a genus of green algae. Pseudoneochloris is a synonym of this genus. As of March 2022, Sykidion was the only genus in the family Sykidiacaeae, which was the only family in the order Sykidiales.
The Mesostigmatophyceae are a class of basal green algae found in freshwater. In a narrow circumscription, the class contains a single genus, Mesostigma. AlgaeBase then places the order within its circumscription of Charophyta. A clade containing Chlorokybus and Spirotaenia may either be added, or treated as a sister, with Chlorokybus placed in a separate class, Chlorokybophyceae. When broadly circumscribed, Mesostigmatophyceae may be placed as sister to all other green algae, or as sister to all Streptophyta.
Chlorokybus is a multicellular (sarcinoid) genus of basal green algae or charophyte. It has been classified as the sole member of the family Chlorokybaceae, which is the sole member of the order Chlorokybales, in turn the sole member of the class Chlorokybophyceae. It grows on soil and rock surfaces, and is rare.
Mesostigma is a genus of unicellular biflagellate freshwater green algae, with a single species Mesostigma viride, covered by an outer layer of basket‐like scales instead of a cell wall. As of February 2022, AlgaeBase classified it as the only genus in the family Mesostigmataceae, the only family in the order Mesostigmatales, the only order in the class Mesostigmatophyceae. It is now considered to be one of the earliest diverging members of green plants/algae (Viridiplantae).
Chaetosphaeridium is a genus of green algae. Several classifications have been proposed. Its traditional classification is in the order Coleochaetales, related to the genus Coleochaete. AlgaeBase places it in the order Chaetosphaeridiales.
Pyrenomonas is a genus of cryptomonad.
Pyramimonadaceae is a family of green algae.
Eileen Alice Willa (1905–1999) was a New Zealand botanical collector, museum curator and writer.
Sycidiales is an order of fossil charophyte green algae. The reproductive structures in Sycidales have a calcified cover, called a utricle, that is thought to prevent the zygote being desiccated. Other Paleozoic families lack this cover, as do modern charophytes. Fossils of the family Sycidiaceae are found over the longest time span, from the Silurian to the Carboniferous.
Wislouchia is a genus of chlorophyte green algae. The name was first published in 2021, as a replacement name for Raciborskiella. As of February 2022, it was the only genus in the family Wislouchiaceae.