Costularia
genus of plants
Costularia is a plant genus in the family Cyperaceae. It includes 15 species native to southeastern Africa, ranging from South Africa (KwaZulu-Natal and Northern Provinces) through Eswatini, Mozambique, Zimbabwe, and Malawi, and to the islands Madagascar, Réunion, and the Seychelles in the Western Indian Ocean.
The genus was formerly circumscribed to include 25 species. A molecular phylogenetic study found that circumscription to include four distinct lineages:
Costularia s.s. (11 species) from Africa, Madagascar, the Mascarene Islands and Seychelles.
Chamaedendron Larridon (five species) from New Caledonia.
a group largely conforming to subgenus Lophoschoenus (eight species) from New Caledonia and Malesia that are now considered to be part of a redelimited genus Tetraria.
the species Xyroschoenus hornei, which is endemic to the Seychelles.
In 2019, the genus was revised to include 15 species, generally corresponding to Costularia s.s. and including a few previously undescribed species.
The public source identifies “Costularia” as genus of plants. This brief keeps that definition visible, then builds a research path around Costularia, genus and plants.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Costularia”, the useful work is to connect “genus of plants” to the records capable of establishing context and consequence.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Jan 21, 2025. The linked authority identifier is Q8351368. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2019.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Costularia”, its source revision and the description used here.
- Expand the search: follow Costularia primary sources, Costularia archive and Costularia research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Costularia”?
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This entry incorporates text from “Costularia” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.