Anthracoidea obtusatae (Anthracoideaceae, Ustilaginales), a new smut fungus on Carex obtusata (Cyperaceae) from Central Asia
Bibliographic record
Abstract
Anthracoidea species are highly host-specific smut fungi. Their host range is restricted to a single sedge species or sedge species belonging to the same or closely related sections. The species on Carex obtusata was referred to as Anthracoidea caryophylleae. However, the hosts of A. caryophylleae were reduced to carices in Carex sect. Mitratae, in its traditional circumscription. In the most recently proposed classification of Carex, C. obtusata has been placed within the Capitata Clade of C. subgen. Euthyceras. In order to clarify the taxonomic status of the Anthracoidea species on C. obtusata, we conducted a molecular study of specimens on C. obtusata and C. caryophyllea, using LSU rDNA sequences. It was found that the Anthracoidea species on C. obtusata is distinct from A. caryophylleae. A new species, Anthracoidea obtusatae on C. obtusata, is described and illustrated from Russia, based on a specimen from the Altay Mts. Its phylogenetic placement and affinities in Anthracoidea are analyzed. Anthracoidea obtusatae is distributed in Central Asia—the Northern Tian Shan Range (Zailiysky Alatau Range and Ketmen Ridge) and the Russian and Mongolian Altay Mts. A morphological examination of a specimen of Anthracoidea on C. obtusata from Canada found that its spore morphology did not match that of A. obtusatae. Additional collections and molecular study are required to clarify the taxonomic status of the North American Anthracoidea species on C. obtusata.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".