Hidden in Plain Sight: A New <i>Cuscuta</i> Species from Southwest Utah and Northwest Arizona (Section <i>Californicae</i> , Subgenus <i>Grammica</i> , Convolvulaceae)
Bibliographic record
Abstract
Abstract— Cuscuta nuwuviana , a new species from southwest Utah and northwest Arizona is described and illustrated. The phylogenetic analyses revealed that the new species belongs to a subclade of C. sect. Californicae (subg. Grammica ) that also includes C. draconella and C. decipiens . Although not statistically significant, a topological incongruence between the plastid and nuclear data suggests that C. draconella resulted from the homoploid hybridization of C. nuwuviana and C. decipiens , accompanied by plastid introgression. Optical and scanning electron microscopy were employed to morphologically distinguish C. nuwuviana from C. draconella and C. decipiens , and an identification key was provided. Field investigations allowed the description of the habitat and plant community of the new species, which is currently known from only two populations in which it parasitizes solely Gutierrezia microcephala (Asteraceae). Evolutionary relationships, infrastaminal scales, and the presence of floral stomatiferous protuberances in C. sect. Californicae are discussed.
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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 | 0.000 | 0.000 |
| 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 | 0.000 | 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".