| Nitella opaca | |
|---|---|
 | |
| Nitella opaca from the Whitchurch canal | |
Scientific classification  | |
| (unranked): | Viridiplantae |
| (unranked): | Charophyta |
| Class: | Charophyceae |
| Order: | Charales |
| Family: | Characeae |
| Genus: | Nitella |
| Species: | N. opaca |
| Binomial name | |
| Nitella opaca (C.Agardh ex Bruzelius) C.Agardh | |
Nitella opaca is a species of algae in the family Characeae.
Nitella opaca is a dioecious species very similar to Nitella flexilis and difficult to distinguish from it. [1]
Nitella opaca has been observed in fresh waters, mostly lakes. Can be found up to 12 m deep. [2]
From the Latin adjective opaca, meaning "opaque", "not shining". [2]
The Prorocentrales are a small order of dinoflagellates. They are distinguished by having their two flagella inserted apically, rather than ventrally as in other groups. One flagellum extends forward and the other circles its base, and there are no flagellar grooves. This arrangement is called desmokont, in contrast to the dinokont arrangement found in other groups. Accordingly, the Prorocentrales may be called desmoflagellates, and in some classifications were treated as a separate class Desmophyceae.
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.
Characeae is a family of freshwater green algae in the order Charales, commonly known as stoneworts. They are also known as brittleworts or skunkweed, from the fragility of their lime-encrusted stems, and from the foul odor these produce when stepped on.
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. AlgaeBase classifies 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).
The Rivulariaceae are a family of cyanobacteria within the Nostocales in which the filaments (trichomes) are tapered from wider at the base to narrower at the tip.
Pyrenomonas is a genus of cryptomonad.
Nitella flexilis, the smooth stonewort, is a freshwater species of characean algae that is used as a model organism for its large cell size and relative ease of cultivation in the laboratory.
Nitella is a genus of charophyte green algae in the family Characeae.
Erythrotrichia is a red algae genus in the family Erythrotrichiaceae. In Iceland, E. carnea is red listed as a vulnerable species (VU).
Syracosphaerales is an order of algae consisting of three families:
The Characeae or stoneworts are a family of green algae. This is a partial list of species found in Britain and Ireland.
 | This green algae-related article is a stub. You can help Wikipedia by expanding it. |