Acalypha crateriana I. Montero & Cardiel 2023, comb. nov.
Notice bibliographique
Résumé
12. Acalypha crateriana (Coode) I.Montero & Cardiel, comb. nov. Acalypha integrifolia Willd. subsp. marginata (Poir.) Coode var. crateriana Coode, Kew Bulletin 34: 44 (Coode 1979). — Type: Mauritius. Tamarin Falls, 2.III.1975, D. Lorence 1138 (holo-, K [K000431104]; iso-, K [K000431105], MAU [n.v.]). ICONOGRAPHY. — Unknown. ETYMOLOGY. — The epithet probably refers to the Kanaka crater in Mauritius. DISTRIBUTION AND HABITAT. — Endemic to the Mascarene Islands (Mauritius). Degraded lowland evergreen moist forest. Altitudinal range 700-800 m (Fig. 26). PRELIMINARY CONSERVATION ASSESSMENT. — Acalypha crateriana comb. nov. is only known from Kanaka crater and Grand Bassin peak in Mauritius. Its EOO is estimated to be 12.9 km 2 and its AOO 12 km 2. Native forest remnants of Mauritius are very restricted, covering less than 5% of the total landmass. This massive deforestation is due mainly to agriculture and urban expansion. Another threat to the Mauritius native flora is the widespread occurrence of alien species. Native plants are seriously affected by invasive plants, reducing their growth rate so regeneration of forests is extremely low (Safford 1997; Florens 2008; Baider & Florens 2013; Norder et al. 2017). No specimens of this species have been collected for 45 years. In recognition of its restricted geographic range (a single known location), the cited threats, and the absence of recent collections, A. crateriana comb. nov. is assigned a preliminary conservation status of Critically Endangered: CR B2ab(ii,iii,iv). MATERIAL EXAMINED. — 16 collections. Mauritius. Coode, M.J.E. 4694 (K), 4700 (K), 4701 (P[P04779343]), 4704 (K), 4705 (K, MO[MO-2452045]), 4718 (K), 4720 (K), 4721 (P[P04779349]), 4722 (K), 4729 (K), 4732 (K, MO[MO-2452041]), 4737 (K), 4744 (K, MO[MO-2452042]), 4748 (P[P04779342]); Lorence, D. 1138 (K[K000431104, K000431105]), DL1858 (MO [MO-2452048], P[P04779346]). REFERENCES. — Coode (1982: 74); Montero Muñoz et al. (2018a: 104) as A. marginata. DESCRIPTION Shrubs, leaf persistence unknown, to 2.7 m tall, probably dioecious. Branches appressed-pubescent, glabrescent when mature. Axillary buds naked, hispid. Stipules to 5 mm long, linear-lanceolate, densely pubescent with simple, appressed trichomes, margin papillate. Petioles 0.5-0.8 cm long, indumentum similar to that on young branches, glabrescent. Leaf blades 4-7(-10) × 1.5-3cm, elliptic to subobovate, chartaceous; base acute to cuneate; apex rounded to acute; margin crenate to crenate-dentate, slightly revolute, usually reddish or pinkish, teeth rounded; upper surface glabrous; lower surface sparsely hairy with appressed trichomes on veins; venation pinnate, secondary veins 7-8 per side. Stipels absent. Inflorescences spiciform (male) or glomerulate (female), unisexual, axillary. Male inflorescences to 5 cm long; peduncle to 5 mm long, indumentum similar to that on petioles; flowers glomerate; bracts to 1 mm long, triangular, appressed-pubescent. Female inflorescences 2-4 mm long;sessile; bracts 1-4, not enlarging in fruit, to 0.5 mm long, triangular-lanceolate, appressed-pubescent; margin entire; bracteoles absent. Male flowers: pedicel to 0.6 mm long, sparsely hairy; buds to 0.5 mm diameter, sparsely hairy. Female flowers 1 per bract, subsessile; sepals 3, to 1 mm long, triangular-lanceolate, appressed-pubescent; ovary c. 1 mm diameter,3-lobed,papillose, surface densely hispid; styles 3, to 4 mm long, distinct, sparsely hairy on rachis, each divided into 10-11 segments. Allomorphic flowers not seen. Capsules to 3 mm diameter, papillose-hispid, papillae ending in a simple, trichome to 1 mm long, surface sparsely hairy with simple, short trichomes, glabrescent. Seeds c. 1 × 0.7 mm, pyriform, minutely foveolate. NOTE Acalypha crateriana comb. nov. was treated by Coode (1979) as variety of A. integrifolia subsp. marginata, treated here as A. marginata. We consider A. crateriana comb. nov. to be a distinct species distinguished mainly by having petioles 0.5- 0.8 cm long and leaf blades 4-7(-10) × 1.5-3 cm, elliptic to subobovate; base acute to cuneate; apex rounded to acute; margin crenate to crenate-dentate, usually reddish or pinkish, slightly revolute, teeth rounded; vs petioles 0.5-3 cm long and leaf blades (4-)6-17-(21) × (2-)2.5-7(-8) cm, usually elliptic to elliptic-lanceolate, sometimes obovate; base rounded to cuneate; apex acute to subacuminate; margin crenate-serrate to serrate, discolorous, teeth rounded to acute, slightly callose-edged in A. marginata.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,002 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,003 | 0,002 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,001 | 0,001 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,020 | 0,016 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».