Bibliographic record
Abstract
A comprehensive, richly illustrated photographic field guide to the ferns and lycophytes of the eastern United States and Canada This is a comprehensive photographic field guide to the ferns, spikemosses, clubmosses, and quillworts of eastern North America. Accessible yet scientifically accurate, the book will appeal to beginners and experts alike and enhance the field experience of any user. Keys, range maps, detailed color photographs, and facing-page species descriptions aid exploration and allow reliable identification of all 305 species found in the area covered by the book—the United States east of the Mississippi and contiguous Canada, except for extreme northern and northeastern Canada. An introduction provides an easy-to-understand overview of identifying characteristics, life cycles, and evolutionary history. Checklists allow readers to record species they have seen, in four subregions. Indexes feature a complete list of common and scientific names, including synonyms, ensuring that users can find the plants they are looking for and keep track of changes in taxonomy. In addition, information about hybrids, polyploids, and reticulate relationships is provided, illuminating the fascinating processes that have led to such a rich diversity of species. Modern and innovative, this is the definitive guide to the ferns and lycophytes of eastern North America. Covers all 305 species, belonging to 96 genera and 30 families Features detailed color photos of all species—and facing-page species descriptions Provides checklists for keeping track of species seen Includes common and scientific names and notable synonyms
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) | 0.001 | 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 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.063 | 0.016 |
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".