Noronhia schatzii, Hong-Wa, 2016

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: 241-244

publication ID

978-2-8277-0086-8

persistent identifier

http://treatment.plazi.org/id/824F8D54-FF57-3AE1-FE28-FEE6FE35FA8A

treatment provided by

Carolina

scientific name

Noronhia schatzii
status

 

75. Noronhia schatzii   Hong-Wa, spec. nova (Fig. 60).

Typus: MADAGASCAR. Prov. Toamasina: Analanjirofo, Masoala Peninsula , Ambanizana , “ S Trail” ( S of Androka River ) climbing into hills SE of Ambanizana, 15°38’S 49°59’E, 500 m, 29.X.1992, Schatz 3354 (holo-: MO-4670844!; iso-: G [ G00341576], K, P [ P03532856]!, TAN) GoogleMaps   .

Noronhia schatzii   Hong-Wa can be distinguished from other members of the genus by its whitish bark, its lanceolate somewhat discolor leaf blades, and its white to light yellow tinged pink flowers.

Trees to 14 m tall, trunk to 15 cm diameter; young twigs cylindrical, 0.7-1.4 mm diameter, glabrous; bark light gray to whitish, smooth, with scattered lenticels. Leaves opposite, persistent; bud scales rarely persistent; blades medium green above, lighter below, lanceolate, 7-11.5 3 2-5 cm, subcoriaceous, glabrous, domatia absent, base attenuate, margin flat, apex acuminate, the acumen 7-16 mm long, midrib slightly sunken above, distinctly raised below, secondary veins conspicuous only below, 7-11 per side, 8-15 mm apart, looping 2-5 mm from the margin; petiole light gray to whitish, 5-10 3 1-2 mm, entirely woody, glabrous. Thyrses geminate to fasciculate, multiflorous, compact; peduncle 3-8 mm long, glabrescent to glabrous; pedicel 3-6 mm long, glabrescent to glabrous; calyx sparsely pubescent outside, glabrous inside, lobes triangular, 0.5-1 3 0.8-1.5 mm; corolla white to light yellow tinged pink to mauve, cupuliform, 3-4.5 mm long, glabrous on both sides, the tube 1-2 mm long, lobes oblong to obovate; corona present, 1-1.5 mm long, undivided; stamens 1.3-1.7 mm long, anthers oblong, 0.7-1 mm long; pistil 1.3-1.8 mm long, capitate. Fruiting pedicel 4-20 3 0.7-1.7 mm; young fruits green, brownish when mature, ovoid, 14.5-19.5 3 8-13 mm, surface smooth, apex flat; dry pericarp 0.3-1 mm thick; endocarp subcrustaceous; seed 10.5-12 3 5-6 mm.

This species is dedicated to George E. Schatz, Curator at the Missouri Botanical Garden, who collected the type specimen and who has tremendously advanced the knowledge of the Malagasy flora through various projects, including the “Generic Tree Flora of Madagascar ” (SCHATZ, 2001), a rich source of botanical information   .

Noronhia schatzii   occurs in low- to mid-elevation humid forests on basement rocks along the east coast from the Masoala peninsula to Fort-Dauphin ( Fig. 49). It produces flowers and fruits from October to June.

242 Conservation status

Notes

Paratypi

Noronhia schatzii   is known from eight collections representing eight localities, and exhibits an EOO of 33,332 km 2, an AOO of 28 km 2, and five subpopulations representing five locations, of which four occur within protected areas (Makira, Masoala, and Tsitongambarika). It is very likely that the actual AOO is much larger than 2,000 km 2. Thus, N. schatzii   is assigned a preliminary status of “Least Concern”.

Noronhia schatzii   is similar to N. stevensiana   Hong-Wa, but can be distinguished by its entirely (vs. partially) woody petioles, multiflorous (vs. pauciflorous), compact (vs. compact to diffuse) thyrses, glabrescent to glabrous (vs. pubescent) peduncles and pedicels, and ovoid (vs. subglobose to ovoid) fruits. The whitish bark, lanceolate somewhat discolor leaf blades, and white to light yellow tinged pink flowers characterize this species.

MADAGASCAR. Prov. Toamasina: Maroantsetra, Antsirabe Sahatany, Anjiahely, 15°24’03”S 49°27’14”E GoogleMaps   , 725 m, 12. VI   .2004, Antilahimena 2493 ( MO, P); Masoala PN, near Andranobe, 15°40’54”S 49°57’28”E, 0 m GoogleMaps   , 6.X.1997, Malcomber 2811 ( K, MO); Masoala, 1-2 km E of Ambanizana, 15°36S 49°57’E GoogleMaps   , 340 m, 9. V   .1989, Schatz et al. 2709 ( MO, P, TAN). Prov. Toliara: Fort-Dauphin, Iaboko, Antsontso, Ivohibe forest , 24°34’13”S 47°12’01”E GoogleMaps   , 286 m, 23. V   .2006, Antilahimena et al. 4820 ( G, MO, P, TAN, TEF); Bemangidy Forest , 24°35’02”S 47°12’44”E GoogleMaps   , 100-250 m, 7. II   .2006, Lowry et al. 6685 ( G, MO, P, TAN); Iabakoho, Antsotso, 24°34’S 47°11’E GoogleMaps   , 9.XII.2007, Rabenantoandro et al. 1870 ( G, MO, P, TAN); ibid. loc., 24°34’16”S 47°12’06”E GoogleMaps   , 271 m, 8.XII.2007, Razakamalala et al. 3810 ( MO, P, TAN)   .

244 Description

S

Department of Botany, Swedish Museum of Natural History

G

Conservatoire et Jardin botaniques de la Ville de Genève

K

Royal Botanic Gardens

P

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

TAN

Parc de Tsimbazaza

E

Royal Botanic Garden Edinburgh

VI

Mykotektet, National Veterinary Institute

MO

Missouri Botanical Garden

V

Royal British Columbia Museum - Herbarium

TEF

Centre National de la Recherche Appliquée au Developement Rural