Resolving páramo<i>Poa</i>(Poaceae): morphometric and phylogenetic analysis of the ‘<i>Cucullata</i>complex’ of north-west South America
Bibliographic record
Abstract
Abstract Species delimitation in the Poa taxa of the ‘Cucullata complex’ from the páramos of north-west South America, morphologically defined by open panicles and webbed calluses, among other characters, has been complicated by their large morphological variability coupled with a lack of available taxonomic treatments. Using multivariate morphometric and phylogenetic analyses, distinct groupings of taxa were identified including the new páramo taxa, P. bricenoi sp. nov. from Venezuela and P. cucullata subsp. cucullatella subsp. nov. from Ecuador, which are described and illustrated. Poa scabrivaginata is also presented as a new record for Ecuador and páramo vegetation in general. Based on the results from this study, updated descriptions and images are also presented for P. chirripoensis, P. cucullata s.s., P. petrosa and P. scabrivaginata, and an identification key is provided for the species of the Cucullata complex and other open-panicled Poa spp. from Ecuador, Colombia and Venezuela.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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".