Is<i>Rhizoplaca</i>(Lecanorales, lichenized Ascomycota) a monophyletic genus?
Bibliographic record
Abstract
Rhizoplaca Zopf is a genus characterized by an umbilicate thallus with an upper and a lower cortex, as well as a cupulate hypothecium. It has been considered to be related to Lecanora Ach., the type genus of the Lecanoraceae and, in particular, to the lobate species of this genus. The phylogeny of Rhizoplaca, the monotypic Arctopeltis thuleana Poelt, and a number of representatives of different groups of Lecanora is studied, using sequences from the nuclear ribosomal internal transcribed spacer (ITS) regions. The results suggest an origin for Rhizoplaca species within the large genus Lecanora. A well-supported monophyletic assemblage includes the umbilicate type species Rhizoplaca melanophthalma (DC.) Leuck. & Poelt, the lobate Lecanora novomexicana H. Magn., and five vagrant Rhizoplaca species. Rhizoplaca chrysoleuca (Sm.) Zopf and Rhizoplaca subdicrepans (Nyl.) R. Sant. form a separate well-supported group and Rhizoplaca peltata (Ram.) Leuck. & Poelt is more closely related to Lecanora muralis (Schreb.) Rabenh. Together with data on secondary chemistry, the results show that the umbilicate thallus with a lower and an upper cortex, as well as apothecia with a cupulate hypothecium found in Rhizoplaca and A. thuleana, have developed several times in independant lineages in Lecanora. The thallus morphology in lecanoroid lichens is highly variable and does not necessarily reflect phylogenetic relationships.Key words: Rhizoplaca, Lecanora, Lecanorales, phylogeny, ITS.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 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".