Abrahamia capuronii 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 capuronii

description: 4. <i>Abrahamia capuronii</i> Randrian. &amp; Lowry, spec. nova (Fig. 4). Typus: MADAGASCAR. Prov. Antsiranana: Rég. SAVA, Dist. Sambava, S de l’Anjehabe, [14°18’30’’S 49°44’40’’E], c. 600 m, 7.XI.1950, fl., <i>Service Forestier 767</i> (holo-: P [P06774827]!; iso-: G [G00341710]!, MO- 6684132!, NY!, P [P06774828, P06774829]!, TEF [TEF000881]!). <b>Diagnosis</b> <i>Abrahamia capuronii Randrian. &amp; Lowry can be distinguished from all other species of Abrahamia by a combination of its elliptic leaves, narrow corolla lobes (3</i> <b>3</b> <i>1.2 mm), and slender inflorescence axes.</i> <b>Description</b> <i>Trees</i> 10-15 m tall, 20 cm DBH, bark with white or translucid latex; young twigs only pubescent at the tips. <i>Leaves</i> alternate or sub-opposite; blade obovate to elliptic, 4-7.8 <b>3</b> 2-3.6 cm, chartaceous to subcoriaceous, apex rounded or retuse, margin undulate, base cuneate, adaxial surface glabrous, abaxial surface with short appressed indument, mainly along the midvein and at the base, venation craspedodromous, midvein prominent abaxially, secondary veins 18-33 pairs, 1-4 mm apart, prominent abaxially, slightly raised adaxially, tertiary veins slightly visible on adaxial surface; petiole 10-25 mm long, c. 0.5-1 mm in diam., canaliculate on adaxial surface, glabrescent. <i>Inflorescence</i> axillary or terminal, a panicle, 2-8 cm long, axes slender, strigose. <i>Male flowers</i> 5-merous, small, c. 2-2.5 mm long, subtended by a very small, pubescent bract; pedicel short, c. 0.3-0.5 mm long, pubescent; calyx lobes small, widely ovate, 1 <b>3</b> 1 mm, valvate, connate at the base, adaxial surface glabrous, abaxial surface sparsely covered with short indument, glabrescent; corolla lobes 3 <b>3</b> 1.2 mm, lanceolate, imbricate, adaxial surface glabrous, abaxial surface pubescent along its longitudinal axis or glabrescent to glabrous, white (according to field notes); stamens 5, filament c. 1.5 mm, glabrous, anthers c. 1 mm long, obloid, glabrous; disk glabrous, c. 1.2-1.5 mm in diam.; ovary rudimentary. Mature and opened <i>female flowers</i> unknown, developing buds with calyx lobes triangular to deltate, c. 1 <b>3</b> 0.5- 0.8 mm, adaxial surface glabrous, abaxial surface with some indument; corolla lobes ovate, c. 1.5 <b>3</b> 1 mm, mostly glabrous but abaxial surface with a few appressed short trichomes; stamens vestigial; disk glabrous; ovary depressed, ovoid, 0.3-0.5 <b>3</b> 0.5 mm, glabrous; style c. 1 mm, glabrous, stigmas capitate. <i>Young fruits</i> ellipsoid, very slightly asymmetrical, glabrous, with longitudinal striations. <b>Etymology</b> The species epithet honors René Capuron, whose extensive field work contributed so much to our knowledge of Madagascar’s woody flora, and who personally collected material of 24 of the 34 species of <i>Abrahamia</i>. 44 Boissiera 71 <b>Distribution, ecology and phenology</b> <i>Abrahamia capuronii</i> is restricted to far northeastern Madagascar (Map 1), where it occurs in mid-elevation humid and transitional forests on rocky substrate up to an elevation of 700 m. Material with buds and flowers has been collected in October and early November, and specimens with young fruits have been gathered in late November. <b>Conservation status</b> With an EOO of 2,585 km ² and a minimum AOO of 24 km ², <i>A. capuronii</i> would qualify as “Endangered” under Criteria B1 and B2 of the IUCN Red List (IUCN, 2012) if other qualifying criteria were met. However, it is known from a total of 6 locations, one of which is situated within a protected area (Loky Manambato) while the others are at sites potentially subjected to clearing and habitat degradation, and should thus be assigned a preliminary status of “Vulnerable’’ [VU B1ab(iii)+2ab(iii)]. <b>Notes</b> <i>Abrahamia capuronii</i> resembles both <i>A. grandidieri</i> and <i>A. sericea</i> by its relatively closely spaced, parallel and craspedodromous secondary veins, but can be distinguished from these two species by its smaller number of secondary veins (10-33 in <i>A. capuronii</i> vs 35-40(-47) in <i>A. grandidieri</i> and 40-70 in <i>A. sericea</i>). <b>Paratypi</b> MADAGASCAR. Prov. Antsiranana: Mont Anjenabe, [14°17’S 49°46’E], 650 m, 3-7. XI.1950, fl., <i>Humbert 24055</i> (G, K, MO, P [2 sheets], TAN); Vohémar, forêt de Binara, 13°15’S 49°37’E, 700 m, 8.XI.2001, fl., <i>Gautier et al. 4125</i> (G, MO, TAN); Vohémar, Analamazava forest, 13°15’43’’S 49°35’22’’E, 25.XI.2004, y. fr., <i>Ranarivelo 446</i> (MO); Daraina, Ambilobe, 13°44’10’’S 49°23’07’’E, 1299 m, 27.X.2007, bud, <i>Randriambololomamonjy et al. 166</i> (MO, P, TAN); Vohémar, Daraina, forêt d’Analamazava, [13°15’58’’S 49°36’14’’E], 700 m, 29.X.2005, fl., <i>Randrianaivo 1259</i> (CNARP, MO, P, TAN); Vohémar, Daraina, forêt d’Antsahabe, 13°12’37’’S 49°33’29’’E, 545 m, 31.X.2005, fl., <i>Razafitsalama 741</i> (CNARP, MO, P, TAN); Vohémar, Andrafainkona, Ampisarahana, 13°38’28’’S 49°31’51’’E, 1009 m, 9.XI.2007, bud, <i>Razakamalala et al. 3716</i> (G, 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 43-44, 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."]}