First Report of <i>Puccinia vincae</i> on <i>Vinca</i> spp. in California
Bibliographic record
Abstract
In 2000, chlorotic leaves with inconspicuous leaf spots were observed on several Vinca major L. and V. minor L. plants in a 0.8-ha area in Woodside, CA. In August 2001, 80 to 90% of the plants were symptomatic. Uredinia measuring 2 to 3 × 1 mm were present on the lower surface of leaves. Urediniospores were ellipsoidal to oblong, 27 to 36 × 17 to 27 μm, with cinnamon-brown walls 1 to 2 μm thick, echinulate, and with three or four equatorial or slightly supraequatorial germ pores. Telia were produced in the uredinia. Teliospores were 1-septate, ellipsoidal to clavate, slightly constricted at the septum, and 34 to 45 × 19 to 30 μm. Teliospore walls were chestnut brown, 1.5 to 2.5 μm thick, and verrucose, with the verrucae sometimes in longitudinal lines. One germ pore covered by a hyaline papilla was present in each cell, at the apex in the upper cell and adjacent to the short, hyaline pedicel in the lower cell. The rust was identified as Puccinia vincae Berk. (1). P. vincae is widespread in Europe on Vinca species and is common on V. major in the eastern United States, Washington, and Idaho (2). To our knowledge, this is the first report of P. vincae on V. major in California (vouchers BPI 841363, 841364) and on V. minor in the United States (voucher BPI 841365). References: (1) J. C. Arthur. Page 324 in: Manual of Rusts in the United States and Canada. Purdue Research Foundation, Lafayette, IN, 1934. (2) D. F. Farr et al. Pages 35 and 916 in: Fungi on Plants and Plant Products in the United States. American Phytopathological Society, St. Paul, MN, 1989.
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 | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| 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".