Noronhia tubulosa 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: 267-269

publication ID

978-2-8277-0086-8

persistent identifier

http://treatment.plazi.org/id/824F8D54-FEAD-3B18-FE28-FEE6FE35F97C

treatment provided by

Carolina

scientific name

Noronhia tubulosa H. Perrier
status

 

83. Noronhia tubulosa H. Perrier   in Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. 2: 295. 1949 ( Fig. 67C).

Lectotypus (designated here): MADAGASCAR. Prov. Mahajanga: env. de Majunga, [15°43’S 46°19’E], XII.1918, Perrier de la Bâthie 12325 ( P [ P00418102]!; isolecto-: K [ K000233180, K000233181] images seen, P [ P00573407, P00573408]!) GoogleMaps   . Syntypus: MADAGASCAR. Prov. Mahajanga: env. de Majunga, s.d., Alleizette s.n. ( P, not found)   .

Small trees to 8 m tall, trunk to 19 cm diameter; young twigs cylindrical, 0.6-1.4 mm diameter, glabrous; bark medium gray to brownish, slightly rugose. Leaves opposite, persistent; bud scales persistent; blades light green above, yellowish below, elliptic, 3.5-7 3 1-2.5 cm, coriaceous, glabrous, domatia absent, base attenuate, margin flat to slightly revolute, apex retuse to slightly acuminate, the acumen 1-6 mm long, midrib slightly sunken above, distinctly raised below, secondary veins conspicuous mostly below, 5-12 per side, 4.5-11 mm apart, looping 1-2 mm from the margin; petiole medium gray, 3.5-6 3 0.7-1.5 mm, entirely woody, glabrous. Flowers fasciculate; pedicel 4-12 mm long, very sparsely pubescent; calyx very sparsely pubescent outside, glabrous inside, lobes triangular, 1-1.2 3 0.6-1.5 mm; corolla yellow tinged reddish, tubular, somewhat campanulate, 5-10 mm long, glabrous on both sides, the tube 4-8 mm long, lobes deltate, apex acute; corona present, 1.2-2 mm long, slightly lobed; stamens 1.7-2.5 mm long, anthers obovate, 1.3- 1.7 mm long; pistil 1.8-2 mm long, stigma capitate. Fruiting pedicel 3-14 3 0.6-1 mm; young fruits green, dark red when mature, subglobose, 9-17 3 7-12 mm, surface smooth, apex apiculate; dry pericarp 0.3-0.8 mm thick; endocarp woody; seed 5-13 3 4-7.5 mm.

Noronhia tubulosa   occurs in low-elevation dry forests in the Boina and Melaky regions

in the west ( Fig. 62). It produces flowers and fruits from November to May.

There were seven collections representing six localities available for analysis, which yielded an EOO of 20,371 km 2, an AOO of 20 km 2, and four subpopulations representing four locations, of which two occur within protected areas (Ankarafantsika and Mahavavy-Kinkony). The actual AOO, although surely larger than the estimated value given above, is likely less than 2,000 km 2. Moreover, due to wildfire, forest exploitation, grazing, and land conversion, subpopulations of N. tubulosa   are projected to experience continuing decline in habitat quality as well as habitat loss. Therefore, it is assigned a preliminary status of “Vulnerable” [VU B2ab(i,ii,iii,iv,v)].

Noronhia tubulosa   can be recognized by its coriaceous, elliptic leaf blades, fasciculate, yellow tinged red flowers with a tubular to somewhat campanulate corolla, and small, subglobose fruits. It differs from N. boinensis   , as previously discussed, by the conspicuousness of its leaf venation and the color and shape of its flowers.

268 Additional specimens examined

This species was based on two syntypes (Perrier de la Bâthie 12325 and Alleizette s.n.). However, PERRIER DE LA BâTHIE (1949, 1952) mentioned that Alleizette s.n. is in fact just a part of his own collection (Perrier de la Bâthie 12325), writing “même localité, simple part probable du précédent [i.e. Perrier de la Bâthie 12325]” in 1949 and “même localité, exemplaire qui n’est évidemment qu’une simple part du précédent [i.e. Perrier de la Bâthie 12325]” in 1952, which seems odd. In any case, Alleizette s.n. could not be located in the Paris herbarium, therefore a specimen of Perrier de la Bâthie 12325 has been chosen as the lectotype and Alleizette s.n. has not been listed as an isolectotype.

MADAGASCAR. Prov. Mahajanga: Ankarafantsika PN, 16°19’S 46°49’E, 60-200 m, 8.IV.1988, Gentry & Schatz 62153 ( MO, P, TAN) GoogleMaps   ; ibid. loc., 16°17’45”S 46°49’20”E, 116 m, 14.III.2009, Hong-Wa 629 ( MO, P, TAN) GoogleMaps   ; Maintirano, Ampasimandroro , [18°04’E 44°01’S], s.d., Service Forestier 16313 ( TEF) GoogleMaps   ; près de Benetsy, [15°56’S 45°47’E], 21.XI.1965, Service Forestier 24268 ( MO, P, TEF) GoogleMaps   ; Marovoay, Ampijoroa STF, 16°18’S 46°49’E, 200 m, 14-15.XII.1991, Service Forestier 34329 ( MO, TEF) GoogleMaps   .

Description

Distribution, ecology and phenology

Conservation status

P

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

K

Royal Botanic Gardens

MO

Missouri Botanical Garden

TAN

Parc de Tsimbazaza

TEF

Centre National de la Recherche Appliquée au Developement Rural

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Oleaceae

Genus

Noronhia

Loc

Noronhia tubulosa H. Perrier

Hong-Wa, Cynthia 2016
2016