Noronhia myrtoides H. Perrier

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: 183-186

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Noronhia myrtoides H. Perrier


55. Noronhia myrtoides H. Perrier   in Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. 2:

302. 1949 ( Fig. 40A).

Typus: M   ADAGASCAR. Prov. Toliara: Ampandrandava, dans les rochers de Pisopiso, [24°02’S 45°42’E], 750 m, XI.1943, Seyrig 299 (= Herb. Jard. Bot. Tan. 5392) (holo-: P [ P03558897]!) GoogleMaps   .

Small trees to 5 m tall, trunk to 5 cm diameter; young twigs cylindrical, 0.6-1.3 mm diameter, glabrous; bark medium to light gray, smooth to slightly rugose. Leaves opposite, persistent; bud scales persistent; blades dark green above, lighter below, oblong to lanceolate, 4-8 3 1-2.5 cm, coriaceous, glabrous, domatia absent, base acute, margin slightly revolute, apex acute to acuminate, the acumen 1-8 mm long, midrib sunken above, slightly raised below, secondary veins barely visible, 7-11 per side, 3.5-11 mm apart, looping 0.5-3.5 mm from the margin; petiole light gray, 2.5-7.5 3 0.6-1.3 mm, entirely woody, glabrous. Flowers fasciculate; pedicel 3-7 mm long, glabrescent; calyx moderately pubescent to tomentose outside, glabrous inside, lobes deltate, 1-2 3 0.6-2 mm; corolla ivory white, cupuliform, 3.8-6 mm long, glabrous on both sides, the tube 2.5-4 mm long, lobes widely ovate, apex obtuse; corona present, 1-2 mm long, lobed; stamens 1.5-2.6 mm long, anthers widely ovate, 1.2-2.4 mm long; pistil 2-3.7 mm long, stigma capitate. Fruiting pedicel 4-9 3 0.7-1.4 mm; young fruits green, dark red when mature, ovoid to subglobose, 9-17 3 8.5-14.5 mm, surface smooth, sometimes covered with white dots, apex apiculate; dry pericarp 0.2-1.1 mm thick; endocarp woody; seed 5.5-11.5 3 4-9.5 mm.

Noronhia myrtoides   occurs in low- to mid-elevation dry forests and thickets from Bemaraha in the west to Andohahela in the south ( Fig. 36). It produces flowers and fruits throughout the year except in April and May.

The assessment included 20 collections representing 19 localities and resulted in an EOO of 78,840 km 2, an AOO of 92 km 2, and 21 subpopulations representing 17 locations, of which 11 occur within protected areas (Amoron’i Onilahy, Andohahela, Bemaraha, Beza-Mahafaly, Complexe zones Mangoky, Menabe-Antanimena, Vohidava-Betsimalaho, and Zombitsy). With a large EOO, an actual AOO that is likely larger than 2,000 km 2, and many locations that are well represented within the network of protected areas, N. myrtoides   is assigned a preliminary status of “Least Concern”.

Noronhia myrtoides   can be recognized by its habit (a small tree), oblong to lanceolate leaf blades with barely visible venation, and fasciculate white flowers. It differs from N. alleizettei   by the shape of its leaves (oblong to lanceolate vs. narrowly elliptic) and the presence of a corona, and from N. buxifolia   by the shape of its leaves (oblong to lanceo-

184 Additional specimens examined

late vs. ovate) and fruits (ovoid to subglobose vs. ovoid) and by the color of its flowers (white vs. red). The specimen of Humbert 5236 deposited at P, with duplicates housed in several other herbaria, bears the annotation “type”. However, in the protologue, PER- RIER DE LA BâTHIE (1949) designated Seyrig 299 (= Herb. Jard. Bot. Tan. 5392) as the type and Humbert 12949 as a “co-type”; the former is therefore recognized here as the type and the latter as a paratype.

MADAGASCAR. Prov. Toliara: Ambatoabo, Andohahela PN, Mt Apiky , 24°47’19”S 46°43’04”E, 647 m, 18. I.2007, Andriamihajarivo et al. 1165 ( MO, P, TAN) GoogleMaps   ; Amboasary Sud, Marotsiraka, Ankotsy , 24°17’13”S 46°08’24”E, 513 m, 11.XI.2008, Andriamihajarivo et al. 1559 ( MO, P, TAN) GoogleMaps   ; c. 10 km N of Befandriana-Sud , 150 m, 21.XII.1961, Appert 51 ( MO)   ; Befandriana-Sud , 150 m, 15. V.1905, Appert 201 ( MO)   ; Vallée de la Sakoa, 23°42’S 44°46’E, 22.X.1940, Decary 16020 ( G, MO, P) GoogleMaps   ; vallée du Fiherenana , [23°18’S 43°38’E], 10-200 m, 14.IX.1924, Humbert & Perrier de la Bâthie 2575 ( P) GoogleMaps   ; vallée inférieure de l’Onilahy , [23°30’S 44°01’E], 10-50 m, 12.VIII.1928, Humbert & Swingle 5236 ( BR, K, P, WAG) GoogleMaps   ; de Tsivory à Anadabolava , [24°12’S 46°19’E], 300-400 m, XII.1933, Humbert 12329 ( P) GoogleMaps   ; Zombitsy ( Sakaraha ), 600-850 m, 26-29. III.1955, Humbert et al. 29649 ( G, MO, P)   ; Anadabolava, Betsimilaho , 24°13’06”S 46°17’16”E, 299 m, 1.VII.2011, Letsara et al. 1287 ( CAS, MO) GoogleMaps   ; entre Tuléar et St. Augustin , 23°28’S 43°47’E, 31.III.1966, Peltier & Peltier 5827 ( MO, P) GoogleMaps   ; env. de Soahanina, [18°35’S 44°14’E], s.d., Perrier de la Bâthie 8812 ( P) GoogleMaps   ; sur la Sakoa, bassin de l’Onilahy, [23°43’S 44°47’E], VIII.1925, Perrier de la Bâthie 17363 ( P) GoogleMaps   ; Beza Mahafaly RS near Betioky , 23°40’S 44°39’E, 180 m, 26.X.1987, Phillipson 2455 ( MO, P, TAN) GoogleMaps   ; Near Beza Mahafaly RS, 23°58’S 44°39’E, 150 m, 28.XI.1987, Phillipson 2618 ( MO, P, TAN) GoogleMaps   ; Sakaraha, Mahaboboka, Ankasy forest , 22°49’03”S 44°16’47”E, 581 m, 22. II.2011, A. Randrianasolo et al. 1441 ( G, MO, P, TAN) GoogleMaps   ; Amboasary Sud, Mahaly, Anadabolava , 24°14’38”S 46°18’25”E, 263 m, 24.X.2007, Randriatsivery et al. 248 ( MO, P, TAN) GoogleMaps   ; Manja, Beharoana, Vondrove , 21°48’03”S 44°10’43”E, 86 m, 20.IX.2007, Rasoafaranaivo et al. 267 ( MO, P, TAN) GoogleMaps   ; Ambatoabo, Ankoba , 2 km E d’Imonty, 24°47’56”S 46°40’24”E, 160 m, 17.XI.2009, Ratovoson 1496 ( G, MO, P, TAN) GoogleMaps   ; Zombitsy PN, [22°46’S 44°42’E], 600 m, 21.III.1951, Service Forestier 3387 ( P, TAN, TEF) GoogleMaps   ; Ankaraobato, Morondava , [20°10’30”S 44°37’50”E], 0-50 m, 13.XI.1952, Service Forestier 6063 ( MO, P, TEF) GoogleMaps   ; Menabe, Andoharano , [19°42’S 44°33’E], 16.XII.1957, Service Forestier 17866 ( G, P, TEF) GoogleMaps   ; Betioky, near Analafaly , 23°39’S 44°38’E, 1. VI.1987, Sussman 153 ( MO) GoogleMaps   .

Photos: taken by respective coLLectors

186 Diagnosis



Distribution, ecology and phenology

Conservation status


Botanische Staatssammlung München


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


"Alexandru Ioan Cuza" University


Missouri Botanical Garden


Parc de Tsimbazaza


Nanjing University


Royal British Columbia Museum - Herbarium


Conservatoire et Jardin botaniques de la Ville de Genève


Embrapa Agrobiology Diazothrophic Microbial Culture Collection


Royal Botanic Gardens


Wageningen University


California Academy of Sciences


Harvard University - Arnold Arboretum


Royal Botanic Garden Edinburgh


Centre National de la Recherche Appliquée au Developement Rural


Mykotektet, National Veterinary Institute