Achnanthidium caledonicum Lange-Bert. (Lange-Bertalot 1999
Bibliographic record
Abstract
Achnanthidium caledonicum (Lange-Bert.) Lange-Bert. (Figs 2-4) Iconographia Diatomologica 6: 270-283 (Lange-Bertalot 1999). — Achnanthes microcephala f. scotica J.R.Carter in Carter & Bailey- Watts, Nova Hedwigia 33: 534, pl. 1, fig. 31 (Carter & Bailey-Watts 1981). — Achnanthes minutissima var. scotica (J.R.Carter) Lange- Bert.in Lange-Bertalot & Krammer, Bibliotheca Diatomologica 18: 106, pl. 55, figs 4-12, pl. 57, fig. 11, pl. 67, figs 35-56 (Lange-Bertalot & Krammer 1989). — Achnanthes scotica (J.R.Carter) Lange-Bert., Bibliotheca Diatomologica 27: 8 (Lange-Bertalot 1993), nom. illeg., non Achnanthes scotica Flower & V.J.Jones, Diatom Research 4: 228, figs 1-7, 42-53 (Flower & Jones 1989). — Achnanthidium minutissimum var. scoticum (J.R.Carter) H.Cremer in Cremer & Wagner, Polar Biology 26: 108 (Cremer & Wagner 2003). — Basionym: Achnanthes caledonica Lange-Bert. in Lange-Bertalot & Moser, Bibliotheca Diatomologica 29: 95 (Lange-Bertalot & Moser 1994). DESCRIPTION LM (Fig. 2 A-AN) Frustules moderately arched, with convex rapheless valves, concave raphe valves, and recurved poles. Valves linear with large, subcapitate to capitate poles, the latter sometimes wider than the maximum valve width at valve centre. Valve margins tapering slightly towards a small constriction before poles. At valve centre, margins slightly inflated, sometimes unilaterally, or straight. Valve dimensions (n = 20): length 17.5-37.5 µm, width at valve centre: 3.0-3.5 µm. On raphe valve (RV), shape of central area variable, either a small transverse fascia, or oval to round, bordered by one or several slightly shortened striae. Raphe filiform, straight, central pores hardly widened, distantly placed at margin of central area. Central area on rapheless valve (RL) narrow lanceolate. Axial area narrow linear on both valves. Striae radiate throughout on both valves, more distantly placed in valve centre, 30-32 in 10 µm. SEM (Figs 3 A-F; 4A-D) Raphe located on slightly raised sternum, terminal fissures straight terminating at valve/mantle junction. Internally, central raphe endings shortly deflected to opposite sides, terminal raphe endings form small helictoglossae. Striae composed of 2-4 (RV) and 2-5 (RL) areolae. Areolae round or oval, areolae adjacent to valve margin slit-like. Row of transapically elongated areolae on mantle separated from areolae on valve face by hyaline area. On the type slide (lecto-, BM[BM 94890], ex J.R. Carter 3665), the species is common, but many specimens are positioned in girdle view. The central area is often a fascia, as mentioned by Carter (Carter & Bailey-Watts 1981), but sometimes less conspicuous, irregular, and formed by more widely spaced central striae.
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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) | 0.001 | 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 | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.011 | 0.004 |
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".