Abrahamia darainensis 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 darainensis

description: 5. <i>Abrahamia darainensis</i> Randrian. &amp; Lowry, spec. nova (Fig. 5). Typus: MADAGASCAR. Prov. Antsiranana: Rég. SAVA, Daraina, forêt d’Antsahabe, 13°12’53’’S 49°31’53’’E, 460 m, 25.I.2006, fr., <i>Ranirison &amp; Nusbaumer 1118</i> (holo-: G [G00090546]!; iso-: MO- 6671432!, P [P00580353]!, TEF [TEF000882]!). <b>Diagnosis</b> <i>Abrahamia darainensis Randrian. &amp; Lowry can be distinguished from other members of the genus by its small, chartaceous, glabrous, elliptic to obovate leaves with a short petiole (5-7 mm long), and its glabrous, ellipsoid fruits that measure 2.6</i> <b>3</b> <i>1.5 cm.</i> <b>Description</b> <i>Trees</i> 6 m tall, 9 cm DBH. <i>Leaves</i> alternate; blade elliptic to obovate, 4-7.5 <b>3</b> 1.2-2.2 cm, chartaceous, apex shortly acuminate, margin undulate, base cuneate, both surfaces glabrous, venation craspedodromous, midvein visible but not prominent on both surfaces, secondary veins 14-18 pairs, 3-5 mm apart, almost impressed adaxially, slightly raised baxially, tertiary veins few and only weakly visible adaxially; petiole 5-7 mm long, c. 0.5-1 mm in diam., canaliculate on adaxial surface, glabrous. <i>Inflorescence</i> and <i>flowers</i> unknown. <i>Fruits</i> 2.6 <b>3</b> 1.5 cm, ellipsoid, light red, glabrous, with longitudinal striations. <b>Distribution, ecology and phenology</b> <i>Abrahamia darainensis</i> is known only from humid forest on the eastern slope of Antsahabe in the Daraina region (Map 2). It was collected in fruit in January. <b>Conservation status</b> While <i>Abrahamia darainensis</i> is only known from a single locality, it is situated within a large block of forest in the Loky Manambato protected area (Daraina), and in the absence of data on population size, no future decline is expected in terms of AOO, EOO, or quality of habitat, so we therefore assign a preliminary conservation status of “Least Concern’’ [LC] using the IUCN Red List Categories and Criteria (IUCN, 2012). <b>Notes</b> <i>Abrahamia darainensis</i> is similar to <i>A. lenticellata</i> in having chartaceous leaves with a short acuminate apex and undulate margins, and fruits of similar size (2.6 <b>3</b> 1.5 cm in <i>A. darainensis</i> and 2-2.6 <b>3</b> 1.3-1.5 cm in <i>A. lenticellata</i>). It differs, however, by having secondary veins that are fewer in number (14-18 vs 20-25) and are craspedodromous (vs semicraspedodromous), a shorter petiole (5-7 mm vs 7-13 mm), and glabrous (vs velutinous) fruits. <i>Abrahamia darainensis</i> is only known from the type gathering.
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 page 47, 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."]}