Noronhia crassinodis 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: 80-83

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Noronhia crassinodis H. Perrier


18. Noronhia crassinodis H. Perrier   in Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. 2: 301. 1949 ( Fig. 12A).

Typus: M   ADAGASCAR. Prov. Antsiranana: Ouest-Nord, près de Diégo-Suarez, Sakaramy , [12°26’S 49°16’E], 400-500 m, IX.1926, Perrier de la Bâthie 17673 (holo-: P [ P00418100]!) GoogleMaps   .

Shrubs to small trees to 7 m tall, trunk to 8 cm diameter; young twigs cylindrical, 0.7- 1.8 mm diameter, glabrous; bark medium gray, smooth to rugose, with scattered lenticels. Leaves opposite, persistent; bud scales persistent; blades yellowish green, obovate, 3.5-6.5 3 1.5-4.5 cm, very coriaceous, glabrous, domatia absent, base acute to attenuate, margin flat to undulate, apex mucronulate, the mucro 2-9 mm long, midrib sunken above, flat to raised below, secondary veins conspicuous mostly below, 7-12 per side, 4-9 mm apart, looping 1-4 mm from the margin; petiole medium gray, 3.5-7 3 1-2.5 mm, entirely woody, glabrous. Flowers fasciculate; pedicel 8-20 mm long, glabrescent; calyx moderately pubescent outside, glabrous inside, lobes triangular, 2-2.5 3 1.5-2 mm; corolla red purplish, urceolate, 5.5-7 mm long, glabrous on both sides, the tube 5 mm long, lobes oblong, apex obtuse; corona present, 1.3-1.8 mm long, undivided; stamens 2-2.2 mm long, anthers oblong, 1.5-1.9 mm long; pistil 1.5-2.5 mm long, stigma capitate. Fruiting pedicel 3.5-13 3 1-2.5 mm; young fruits greenish, reddish-yellowish when mature, ovoid, 10.5-14 3 5-12.5 mm, covered with white dots, apex flat to bluntly pointed, style persistent; dry pericarp 0.6-0.8 mm thick; endocarp woody; seed 6-7.5 3 4.3-4.7 mm.

Noronhia crassinodis   occurs in low- to mid-elevation dry forests in the north, from Montagne des Français to Ankarana and Daraina ( Fig. 9). It produces flowers and fruits throughout the year.

The assessment was based on 16 collections representing 16 localities and yielded an EOO of 3,849 km 2, an AOO of 52 km 2, and 12 subpopulations representing 10 locations, of which six occur within protected areas (Andavakoera-Andrafiamena-Ambohipiraka, Ankarana, Loky-Manambato, Montagne d’Ambre, and Montagne des Français). Decline in habitat quality as well as loss of habitat and mature individuals resulting from land conversion, charcoal production and illegal and/or artisanal mining are expected outside of protected areas. Therefore, N. crassinodis   is assigned a preliminary status of “Vulnerable” [VU B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)].

Noronhia crassinodis   can be recognized by its thick nodes often with rigid bud scales, very coriaceous, obovate leaf blades terminated by a short mucro, fasciculate, red-purplish flowers, and punctate fruits. It differs from N. candicans   and N. clarinerva   by the

Additional specimens examined

features already discussed under these species, and differs from N. intermedia   by its obovate (vs. obovate to obtrullate), mucronulate (vs. acuminate) leaves, red-purplish (vs. pale green) flowers, and punctate (vs. smooth to rugose) fruits.

MADAGASCAR. Prov. Antsiranana: Marotaolana, Ankarana RS, forêt du Mahoro Analamisakana , 12°49’32”S 49°15’08”E, 6.XI.1997, Bardot-Vaucoulon & Andrianantoanina 929 ( K, MO, P, TAN) GoogleMaps   ; Tanambao-Marivorahona , 13°02’34”S 49°09’14”E, 45 m, 2.VII.2005, Guittou et al. 150 ( CNARP, MO, P, TAN) GoogleMaps   ; Andranovondronina, Antsisikala, forêt d’Ankatokobe , 12°10’33”S 49°12’58”E, 50 m, 18. V.2005, Leopold et al. 66 ( CNARP, G, MO, P, TAN) GoogleMaps   ; Ramena, Andavakoera, Montagne des Français , 12°21’01”S 49°21’32”E, 115 m, 11.IX.2004, Rabefarihy & Guittou 20 ( MO, P, TAN) GoogleMaps   ; Vohémar, Tsaratanana, forêt d’Ampondrabe , 12°58’18”S 49°41’57”E, 200 m, 4.XI.2005, Rakotonandrasana et al. 954 ( CNARP, G, MO, P, TAN) GoogleMaps   ; Ampitiliantsambo, 15 km à l’E d’Andranomanitra , 12°23’18”S 49°22’57”E, 233 m, 14. VI.2004, Ramananjanahary et al. 20 ( CNARP, G, MO, P, TAN) GoogleMaps   ; Montagne d’Ambre PN, 12°28’34”S 49°10’51”E, 682 m, 18.XII.2011, Ramandimbimanana et al. 175 ( G, MO, P, TEF) GoogleMaps   ; Ampitiliantsambo, Montagne des Français , 12°23’13”S 49°22’53”E, 239 m, 11.IX.2004, Randriambololomamonjy et al. 9 ( MO, P, TAN) GoogleMaps   ; Mahamasina, Ankarana RS, 12°58’S 49°08’E, 50 m, 15. VI.1995, Razafimandimbison & Andrianantoanina 96 ( K, MO, P, TAN) GoogleMaps   .

82 Photos: taken by respective coLLectors


Distribution, ecology and phenology

Conservation status


Botanische Staatssammlung München


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


Royal Botanic Gardens


Missouri Botanical Garden


Parc de Tsimbazaza


Royal British Columbia Museum - Herbarium


Conservatoire et Jardin botaniques de la Ville de Genève


Mykotektet, National Veterinary Institute


Centre National de la Recherche Appliquée au Developement Rural














Noronhia crassinodis H. Perrier

Hong-Wa, Cynthia 2016