Tetraplasandra
genus of plants
Tetraplasandra is a no longer recognised genus of plants in the ivy family, Araliaceae. They are small to medium trees, (rarely shrubs or large trees) of mesic to wet forests.
Some authors have recognized as many as 19 species in Tetraplasandra, while others have recognized as few as six. In 2007, the authors of a scientific paper recommended that the genus be divided into nine species. In 2010, all of these nine species were included in Polyscias subgenus Tetraplasandra, a subgenus of 21 species in the large genus Polyscias, which will comprise about 250 species, when about 90 undescribed species are published.
The range of variation in Tetraplasandra is unusually large for a genus in Araliaceae Most of the species were originally described in other genera which were later merged with Tetraplasandra.
The type species for the genus is T. hawaiensis.
As defined by William R. Philipson in 1970, Tetraplasandra is endemic to Hawaii and occurs on six of the eight main islands. Niʻihau and Kahoʻolawe are low-lying and dry; consequently, they do not support Tetraplasandra. T. oahuensis, T. kavaiensis, and T. hawaiensis are found on six, five, and four of the islands, respectively.
This brief starts where responsible research should: with the source description of “Tetraplasandra” as genus of plants. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the science & nature register because the source frames it as genus of plants. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Aug 28, 2025. The linked authority identifier is Q7706661. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2007, 2010 and 1970.
Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. 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 “Tetraplasandra”, its source revision and the description used here.
- Expand the search: follow Tetraplasandra primary sources, Tetraplasandra archive and Tetraplasandra 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 “Tetraplasandra”?
- Is the terminology current, historical or disputed?
- Which observation, specimen, dataset or publication supports the account?
Search terms from this dossier
This entry incorporates text from “Tetraplasandra” 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.