Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
A genera
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "A genera" is not correct in English.
The correct term is "a genus" when referring to a category in biological classification. You can use it when discussing biological taxonomy, specifically when identifying or classifying organisms. Example: "The lion belongs to a genus that includes other big cats, such as tigers and leopards."
⚠ May contain grammatical issues
Science
Encyclopedias
News & Media
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
5 human-written examples
They can signal the end of a species, a genera, or even a whole family of creatures.
Science & Research
This was supported by a direct and positive relationship between macrofauna and nematode richness, and implies a genera enrichment process across size classes and phyla.
L29-30 – how is a genera "unknown in databases", I think you meant to say they are novel?
Science
a Genera having species with single sites in one position and other species with single sites in a different position were excluded from this sample.
Science
Bacteria networks unique for skin, gut, and oral cavity are shown in Fig. 2. Different colors of the nodes indicate different network modules, and the node size represents relative abundance: The larger the nodes, the higher the relative abundance of a genera.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
Menispermaceae leaves are typically simple, with a palmatinerved venation, although a few genera have a pinnate venation.
Science
A few genera lack a soldier caste, and the mechanisms for defense in these groups are not known.
Encyclopedias
Even in this context Proserpinus is extremely conservative with all but one species feeding on a few genera within a single plant family Onagraceae and nothing else.
Science
The available anthozoan resources are limited in taxonomic diversity and dominated by a few genera from a narrow geographic range (Meyer and Weis 2012).
Science
We were able to assemble a matrix with a wide genera representation and relatively little missing data.
Science
Ultimately, absent a wood density value for a species or genera, a default regional wood density value of 0.56 for Central America was used [52].
Expert writing Tips
Best practice
When referring to a single genus, use the singular form "genus". "Genera" is the plural form and should be used when referring to multiple genera.
Common error
Avoid using "genera" when you intend to refer to a single group in biological classification. Always use "genus" in the singular.
Source & Trust
80%
Authority and reliability
2.2/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a genera" attempts to function as a noun phrase, likely intending to identify a single taxonomic group. However, it is grammatically incorrect because "genera" is the plural form of "genus". Ludwig AI highlights this error, suggesting the use of the singular form instead.
Frequent in
Science
63%
Encyclopedias
17%
News & Media
10%
Less common in
Formal & Business
0%
Social Media
0%
Wiki
10%
Ludwig's WRAP-UP
In summary, the phrase "a genera" is grammatically incorrect. The correct singular form is "a genus". Ludwig AI flags this error and suggests using the singular form when referring to a single taxonomic group. While the phrase appears in scientific and encyclopedic contexts, its incorrect usage undermines its effectiveness. Always remember to use "genus" for the singular and "genera" for the plural.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
A genus
Singular form of "genera", grammatically correct.
One genus
Synonymous with "a genus".
A specific genus
Highlights a particular genus out of many.
The genus
Refers to a specific, already identified genus.
A group of genera
Emphasizes that more than one genera are being referred to.
A type of genus
Refers to a category within the genus classification.
A kind of genus
Indicates a particular variety or sort of genus.
An example of a genus
Illustrates the concept of a genus with a concrete instance.
A category of genera
Highlights the concept of a category containing multiple genera.
Certain genera
Emphasizes that specific genera are being considered, without naming them.
FAQs
What is the correct singular form of "genera"?
The correct singular form of "genera" is "a genus". "Genera" is the plural form.
How do I use "genus" in a sentence?
You can use "genus" in a sentence like this: "The lion belongs to the genus Panthera." Remember to use the correct plural form, "genera", when referring to more than one.
Which is correct, "a genus" or "a genera"?
"A genus" is correct. "A genera" is grammatically incorrect. Always use "genus" for the singular form.
What are some examples of different genera?
Examples of different genera include Panthera (lions, tigers, leopards), Canis (dogs, wolves, coyotes), and Rosa (roses). These are all distinct "genera" within their respective families.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
80%
Authority and reliability
2.2/5
Expert rating
Real-world application tested