Abrahamia betamponensis Randrian. &amp; Lowry 2017, spec. nova
Creators: name: Randrianasolo, Armand
name: Lowry II, Porter P.
name: Schatz, George E.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Sapindales
Anacardiaceae
Abrahamia
Abrahamia betamponensis

description: 2. <i>Abrahamia betamponensis</i> Randrian. &amp; Lowry, spec. nova (Fig. 2). Typus: MADAGASCAR. Prov. Toamasina: Rég. Atsinanana, Betampona RN, [17°55’S 49°13’E], 24.X.1955, bud, <i>Réserves Naturelles 7701</i> (holo-: P [P06774885]!; iso-: TEF [TEF000880]!). <b>Diagnosis</b> <i>Abrahamia betamponensis Randrian. &amp; Lowry can easily be distinguished from other members of the genus by its large leaves (9-24</i> <b>3</b> <i>4.3-8.5 cm) with a remarkably prominent midvein on the abaxial surface, a long, thick petiole (15-18 mm in length), numerous secondary veins (50-60 pairs), and fruit surface covered with dense, short indument.</i> <b>Description</b> <i>Trees</i> c. 7 m tall; bark with lenticels; young twigs whitish-gray to light tan, pubescent at the very tips. <i>Leaves</i> opposite or subopposite; blade oblanceolate, 9-24 <b>3</b> 4.3-8.5 cm, subcoriaceous to coriaceous, apex shortly acuminate, retuse or emarginate, margin slightly revolute, base cuneate, adaxial surface glabrous, abaxial surface sparsely strigose along midvein, venation craspedodromous, midvein strikingly prominent abaxially, secondary veins 50-60 pairs, 2-5 mm apart, raised on both surfaces, tertiary veins visible on both surfaces, petiole 15-18 mm long, canaliculate on adaxial surface, c. 2.5-3 mm in diam., glabrous. <i>Inflorescence</i> terminal and axillary, a panicle, 2-7 cm long, axes thick, covered with dense, short, appressed indument; bracts triangular, c. 4 <b>3</b> 2 mm, adaxial surface glabrous, abaxially surface with short, appressed indument. <i>Male flowers</i> 5-merous, small, c. 3 mm long, subtended by a small, deltoid bract; pedicel short, c. 1 mm long, strigose; calyx lobes triangular, 2.5 <b>3</b> 1 mm, adaxial surface glabrous, abaxial surface pubescent; corolla lobes very widely ovate, 2 <b>3</b> 2 mm, adaxial surface glabrous, abaxial surface pubescent; stamens 5, filaments 1.2-1.3 mm long, anthers c. 1 mm long, ovoid; disk thin, dish-shaped and glabrous. <i>Female flowers</i> unknown. <i>Fruits</i> 2.4-3.2 <b>3</b> 1.4-1.8 cm, ellipsoid, covered with dense, short indument, with longitudinal striations. <b>Vernacular names</b> “Hazombarorana”, “Hazombarorana à grandes feuilles”, “Vatodinga’’, “Voatodinga”. <b>Distribution, ecology and phenology</b> <i>Abrahamia betamponensis</i> is known only from Betampona reserve and its vicinity, with a single collection from Zahamena national park (Map 1). It occurs in mid-elevation humid forest. Material in bud has been collected in October and fruiting specimens have been made in January. <b>Conservation status</b> <i>Abrahamia betamponensis</i> has a minimum EOO of 8 km 2, but its two known localities are both situated within protected areas (Betampona reserve and Zahamena national park) so in the absence of any data on population size, no future decline is expected in terms of AOO, EOO, or quality of habitat. It has therefore assigned a preliminary status of “Least Concern’’ [LC] using the IUCN Red List Categories and Criteria (IUCN, 2012). <b>Notes</b> <i>Abrahamia betamponensis</i> belongs to a group of species with large leaves (up to 37 cm long) that have numerous (40-70) secondary veins. Within this group, <i>A. betamponensis</i> most closely resembles <i>A. sambiranensis</i>, but differs by the dense, short indument on the surface of its mature fruit (vs glabrescent or glabrous). <b>Paratypi</b> MADAGASCAR. Prov. Toamasina: Rég. Antisnana, Fotsimavo, [Betampona RN], [17°55’S 49°13’E], 300-400 m, 20.I.1950, fr., <i>Réserves Naturelles 2366</i> (P, TAN); <i>ibid. loco, Réserves Naturelles 2489</i> (P, TAN); Anjiro, Ambodiriana, [Betampona RN], [17°55’S 49°13’E], 26.X.1957, bud, <i>Réserves Naturelles 9148</i> (P, TEF); Mangabe, [Zahamena PN], [17°42’S 48°54’E], 20.I.1963, old fr., <i>Réserves Naturelles 12446</i> (MO, P, TEF); Betampona RN, 17°54’29”S 49°12’16”E, 530 m, 13.I.2017, ster., <i>Schatz et al. 4472</i> (MO, P, TAN).
description: Published as part of <i>Randrianasolo, Armand, Lowry II, Porter P. &amp; Schatz, George E., 2017, Taxonomic treatment of Abrahamia Randrian. &amp; Lowry, a new genus of Anacardiaceae from Madagascar, pp. 1-152 in Boissiera 71</i> on pages 34-35, DOI: 10.5281/zenodo.7618113
description: {"references": ["IUCN (2012). IUCN Red List Categories and Criteria: Version 3.1 ed. 2. IUCN Species Survival Commission, Gland &amp; Cambridge."]}