Noronhia cochleata Labat, M. Pignal & O. Pascal

Hong-Wa, Cynthia, 2016, A taxonomic revision of the genus Noronhia Stadtm. ex Thouars (Oleaceae) in Madagascar and the Comoro Islands, Boissiera 70, pp. 1-292 : 72-73

publication ID

https://doi.org/ 10.5281/zenodo.7599432

DOI

https://doi.org/10.5281/zenodo.7586744

persistent identifier

https://treatment.plazi.org/id/824F8D54-FFEE-3A5C-FE28-FEE6FCC5FC44

treatment provided by

Carolina

scientific name

Noronhia cochleata Labat, M. Pignal & O. Pascal
status

 

14. Noronhia cochleata Labat, M. Pignal & O. Pascal View in CoL View at ENA in Novon 9: 66. 1999 ( Fig. 7C View Fig ).

Typus: M AYOTTE: Mlima Combani, [12°50’S 45°10’E], 28.XII.1995, Pascal 281 (holo-: P [ P00075025 ]!; iso-: K [ K000691509 ] image seen, MO –5203140!, P [ P00075026 , P00075027 ]!) GoogleMaps .

Description

Trees to 15 m tall, trunk to 15 cm diameter; young twigs cylindrical, 0.6-2.3 mm diameter, glabrous; bark medium gray, smooth. Leaves opposite, persistent; bud scales deciduous; blades medium green above, lighter below, oblong to elliptic, 6-12 3 2-4 cm, chartaceous, glabrous, domatia common, base acute to attenuate, margin flat to slightly undulate, apex acuminate, the acumen 6-15 mm long, midrib flat to slightly sunken above, raised below, secondary veins conspicuous, 8-13 per side, 4-18 mm apart, looping 1.5-4 mm from the margin; petiole yellow, 5-12 3 0.7-2.4 mm, not woody or only partially, glabrous. Thyrses geminate to fasciculate, pauciflorous, diffuse; peduncle 6-8 mm long, moderately pubescent; pedicel 1.5-9 mm long, moderately pubescent; calyx moderately pubescent outside, glabrous inside, lobes deltate, 0.5-1.2 3 0.8-1.4 mm; corolla pinkish outside, white inside, cupuliform to subrotate, 3-5.5 mm long, glabrous on both sides, the tube 1-3 mm long, lobes oblong to ovate, apex apiculate; corona present, 1-1.5 mm long, undivided; stamens 1.2-2 mm long, anthers oblong, 0.9-1.3 mm long; pistil 1.3-2 mm long, stigma capitate. Fruiting pedicel 3-10 3 0.8-1.2 mm; young fruits green, purplish black when mature, ovoid, 14-17 3 8-11 mm, surface smooth, covered with white dots, apex rostellate, the rostellum circular, rounded, with the persistent style; dry pericarp 0.3-0.5 mm thick; endocarp woody; seed 11.5-12 3 5-6 mm.

Distribution, ecology and phenology

Noronhia cochleata occurs in low- to mid-elevation humid forests on Mayotte in the Comoro Islands ( Fig. 9 View Fig ). It produces flowers and fruits from September to April.

Conservation status

The assessment was based on 15 collections representing 13 localities and indicated an EOO of just 161 km 2, an AOO of 40 km 2, and five subpopulations representing five locations, of which four are encompassed within protected areas (Réserves forestières de Benara, des Crêtes du Sud, de Majimbini et de Songoro Mbili). Subpopulations of N. cochleata will likely experience continuing decline in habitat quality and habit loss due to land conversion, therefore the species is assigned a preliminary status of “Endangered” [EN B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)].

Notes

Noronhia cochleata can be recognized by its non-woody petioles, oblong to elliptic leaf blades bearing domatia, diffuse inflorescences and distinctly rostellate fruits. It differs mostly from N. comorensis by its non-woody (vs. woody) petioles, thyrsoid inflorescences (vs. fasciculate flowers), and pinkish-white (vs. yellow tinged reddish) corolla.

Additional specimens examined

MAYOTTE: Grande Terre, Chiconi, réserve forestière de Sohoa, 21.XII.2000, Barthelat 148 ( G, K, MO, P) ; Mamoudzou, Ilot Bouzi, 14.III.2001, Barthelat 327 ( G, K, MO, P) ; Bandrele, Contreforts du Choungui kely, 17.IX.2001, Barthelat 503 ( G, K, MO, P) ; Mamoudzou, La Convalescence, Réserve forestière de Majimbini, 12. I.2002, Barthelat 684 ( G, K, MO, P) ; ibid. loc., Mlima M’Tsapéré, 12°46’10”S 45°11’26”E, 300-400 m, 19.XI.2000, Labat 3258 ( B, G, K, MO, P, WAG) GoogleMaps ; Combani, base du Mlima Combani, 12°48’27”S 45°09’13”E, 20.XI.2000, Labat 3261 ( K, MO, P) GoogleMaps ; Réserve forestière du Benara, sommet du Bepilipli, 12°52’46”S 45°09’19”E, 550 m, 29.XI.2000, Labat 3308 ( BR, G, K, MO, P) GoogleMaps ; Sommet du Mlima Choungi, 12°57’20”S 45°07’55”E, 500-640 m, 1.XII.2000, Labat 3339 ( G, K, MO, P, PRE) GoogleMaps ; Shungui, 13.XI.1990, Ménager 15 ( MO, P) ; Mlima Choungi, [12°57’S 45°07’E], 16.XI.1995, Pascal 205 ( G, K, MO, P, WAG) GoogleMaps ; Sohoa, 30.XI.1995, Pascal 257 ( MO, P) ; ibid. loc., 12°50’S 45°08’E, 160 m, 14.III.1996, Pascal 418 ( MO, P) GoogleMaps ; Dapani, 150 m, 7. I.1997, Pascal 857 ( K, MO, WAG) ; Sazile Be, 12°58’39”S 45°12’01”E, 116. IV.1999, Pignal 1112 ( MO, P) GoogleMaps .

M

Botanische Staatssammlung München

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

K

Royal Botanic Gardens

MO

Missouri Botanical Garden

G

Conservatoire et Jardin botaniques de la Ville de Genève

I

"Alexandru Ioan Cuza" University

B

Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet

WAG

Wageningen University

BR

Embrapa Agrobiology Diazothrophic Microbial Culture Collection

PRE

South African National Biodiversity Institute (SANBI)

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Oleaceae

Genus

Noronhia

Loc

Noronhia cochleata Labat, M. Pignal & O. Pascal

Hong-Wa, Cynthia 2016
2016
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