Noronhia marinae

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 : 174-177

publication ID

978-2-8277-0086-8

persistent identifier

https://treatment.plazi.org/id/824F8D54-FF08-3AA4-FE28-FEE6FE35F883

treatment provided by

Carolina

scientific name

Noronhia marinae
status

 

52. Noronhia marinae Hong-Wa, spec. nova (Fig. 37).

Typus: MADAGASCAR. Prov. Fianarantsoa: Atsimo-Atsinanana, Manombo RS, parcelle I, circuit Reharatra, 23°00’39”S 47°44’08”E, 12 m, 15.IX.2005, Rabarimanarivo et al. 118 (holo-: MO-6615562!; iso-: G [ G00341623 ]!, P [ P03559025 ]!, TAN!) GoogleMaps .

Noronhia marinae Hong-Wa can be distinguished from other congeneric species by its narrow leaves, its purplish pink flowers borne into compact inflorescences clustered around the nodes.

Trees to 16 m tall, trunk to 24 cm diameter; young twigs cylindrical, 0.5-2.5 mm diameter, glabrous; bark brownish, somewhat rugose, with slight exfoliations. Leaves opposite, persistent; bud scales deciduous; blades dark green above, lighter below, linear to lanceolate, 4-10.5 3 1-3 cm, subcoriaceous, glabrous, domatia absent, base acute to attenuate, margin flat to slightly revolute, apex acuminate, the acumen 3-13 mm long, midrib sunken above, raised below, secondary veins barely visible, 7-13 per side, 5-10 mm apart, looping 1-3.5 mm from the margin; petiole brownish, 1.5-10 3 0.7-2.2 mm, entirely woody, glabrous. Thyrses geminate to fasciculate, pauciflorous, compact; peduncle 2-5 mm long, moderately pubescent; pedicel 2-7 mm long, moderately pubescent; calyx moderately pubescent outside, glabrous inside, lobes triangular, 0.7-1.3 3 0.8-1.5 mm; corolla purplish pink, cupuliform, 3-5 mm long, glabrous on both sides, the tube 1-2 mm long, lobes ovate, apex rounded; corona present, 1-1.7 mm long, undivided; stamens 1.3-2 mm long, anthers oblong, 0.8-1 mm long; pistil 1.5-2.2 mm long, stigma slightly bilobed. Fruiting pedicel 5-7 3 1-1.3 mm; young fruits green, blackish when mature, ovoid, 12.5-13 3 9.5-10 mm, surface smooth, sometimes covered with white dots, apex flat to bluntly pointed, style persistent; dry pericarp 0.5-0.8 mm thick; endocarp woody.

This species is dedicated to Marina Rabarimanarivo , a botanist at the Missouri Botanical Garden in Madagascar, for collecting the type specimen and for adding to the ranks of (the still too few) female Malagasy botanists .

Noronhia marinae occurs in littoral to mid-elevation humid forests along the east coast in two distinct areas: from Antsirabe Nord to Antalaha in the north and from Farafangana to Fort-Dauphin in the south ( Fig. 36). It produces flowers and fruits from September to January.

Based on nine collections representing nine localities, an EOO of 50,885 km 2, an AOO of 32 km 2, and eight subpopulations representing eight locations were obtained. Five of the locations occur within protected areas (Andohahela, Ankarabolava-Agnakatrika,

176 Notes

Paratypi

Makirovana-Tsihomanaomby complex, Manombo, and Tsitongambarika). With an EOO exceeding 20,000 km 2 and an actual AOO likely larger than 2,000 km 2, N. marinae is assigned a preliminary status of “Near Threatened” [NT].

Noronhia marinae is similar to N. linocerioides , but can be distinguished by its woody (vs. non-woody) petioles, linear to lanceolate (vs. elliptic) leaf blades, cupuliform (vs. subrotate), purplish pink (vs. pale yellow) flowers, and apiculate (vs. rostellate) fruits. It can be recognized by its narrow leaves and purplish pink flowers borne in compact inflorescences clustered around the nodes.

MADAGASCAR. Prov. Antsiranana: Vohémar, Antsirabe Nord , Andravinambo , forêt de Tsihomanaomby , 14°06’S 50°02’E, 19.XI.2013, Rakotonirina et al. 273 ( DOV, MO, P, TAN) GoogleMaps ; Antalaha, Ambanitazana, près d’Andrapengy , [14°40’S 50°12’E], 22.X.1966, Service Forestier 24956 ( G, MO, P, TEF) GoogleMaps . Prov. Fianarantsoa: Manombo RS, 23°00’39”S 47°44’07”E, 16 m, 12.IX.2005, Rabarimanarivo et al. 60 ( G, MO, P, TAN) GoogleMaps ; Vangaindrano, Sianofana, Ambatomalama , forêt de Vohipaho , 23°26’34”S 47°31’04”E, 40 m, 20.IX.2009, Razanatsima & Zafindrafeno 723 ( MO, P, TAN) GoogleMaps ; Farafangana, Morarano , [22°48’00”S 47°41’30”E], 0-50 m, 10.X.1953, Service Forestier 10161 ( P, TEF) GoogleMaps . Prov. Toliara: Mahatalaky, Farafara Vatanibe , 24°51’02”S 47°00’20”E, 135 m, 14-18.XI.2009, Rakotovao et al. 4531 ( MO, P, TAN) GoogleMaps ; Enaniliha, forêt d’Andohahela-Trafonaomby , 24°35’40”S 46°44’18”E, 808 m, 28.X.2009, Randrianaivo & Andriantiana 1771 ( MO, P, TAN) GoogleMaps ; Fort-Dauphin, Ifarantsa , [24°54’S 46°52’E], 24.X.1956, Réserves Naturelles 8183 ( P) GoogleMaps .

Diagnosis

Description

Etymology

Distribution, ecology and phenology

Conservation status

Notes

I

"Alexandru Ioan Cuza" University

G

Conservatoire et Jardin botaniques de la Ville de Genève

P

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

TAN

Parc de Tsimbazaza

DOV

Delaware State University

MO

Missouri Botanical Garden

TEF

Centre National de la Recherche Appliquée au Developement Rural

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Oleaceae

Genus

Noronhia