Taxonomic revision of <i>Corallina hombronii</i> : Type sequencing of <i>Jania hombronii</i> reveals its synonymy with <i>Corallina chamberlainiae</i> (Corallinales, Rhodophyta)
Bibliographic record
Abstract
The identity of the geniculate coralline red alga, Corallina hombronii, collected from the subantarctic Auckland Islands in 1840, has remained unclear and the name is rarely used. To clarify its identity, we sequenced portions of the psbA and rbcL genes from the type specimen. Phylogenetic analyses of psbA gene sequences resolved a clade that included type material of both C. hombronii and C. chamberlainiae (type locality: Gough Island, Tristan da Cunha), along with specimens from New Zealand mainland locations (including the Chatham Islands), Chile and the Falkland Islands. This clade was also resolved in phylogenies inferred from rbcL sequences that included material from these Southern Hemisphere locations. Thus, we synonymize C. hombronii and C. chamberlainiae, with the former, earlier published, name having taxonomic priority. This taxonomic assessment with contemporary collections confirms that C. hombronii is restricted to the Southern Hemisphere below latitudes of 30 degrees south in both the Atlantic and Pacific Oceans.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".