Phylogenetic insights resolve Dacampiaceae (Pleosporales) as polyphyletic: Didymocyrtis (Pleosporales, Phaeosphaeriaceae) with Phoma-like anamorphs resurrected and segregated from Polycoccum (Trypetheliales, Polycoccaceae fam. nov.)
Bibliographic record
Abstract
A phylogenetic analysis of nuLSU and ITS sequences representing genera previously included in Dacampiaceae indicates that the family is strongly polyphyletic and that the type species of Dacampia is placed in Pleosporales . The genus Munkovalsaria s. str. is placed in Didymosphaeriaceae ( Pleosporales ). Polycoccum s. str. and two species of Clypeococcum are shown to form a new lineage sister to the Trypetheliaceae in Trypetheliales and described here as Polycoccaceae . Other members of Polycoccum s. lat. are included in the Pleosporales and are closely related to lichenicolous Phoma -like species of the family Phaeosphaeriaceae . The genus Didymocyrtis is resurrected for these species and for lichenicolous species previously assigned to Diederichia , Diederichomyces , Leptosphaeria and Phoma . The genera Diederichia and Diederichomyces are synonymized with Didymocyrtis . The new combinations Didymocyrtis bryonthae , D. cladoniicola , D. foliaceiphila , D. infestans , D. kaernefeltii , D. melanelixiae , D. pseudeverniae , D. ramalinae , D. slaptoniensis and D. xanthomendozae are made, and the new name D. epiphyscia is introduced for Phoma physciicola . Some anamorph-teleomorph relationships are resolved, such as Didymocyrtis ramalinae – Phoma ficuzzae and Didymocyrtis consimilis – Phoma caloplacae , the phylogenetic results being supported by single ascospore cultures that lead to the asexual stage producing pycnidia and conidia in culture. Speciation by host switching is assumed to be important in the genus Didymocyrtis . An identification key to Didymocyrtis species is provided.
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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 | 0.001 | 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) | 0.002 | 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".