Abrahamia delphinensis 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 delphinensis

description: 7. <i>Abrahamia delphinensis</i> Randrian. &amp; Lowry, spec. nova (Fig. 6). Typus: MADAGASCAR. Prov. Toliara: Rég. Anosy, Vinanibe, W de Fort-Dauphin, [25°03’S 46°56’E], 7.XII.1968, fr., <i>Service Forestier 28606</i> (holo-: P [P06774807]!; iso-: G [G00341712]!, K!, MO- 5056712!, NY!, P [P00580305, P00580306]!, TEF [TEF000883]!) . <b>Diagnosis</b> <i>Abrahamia delphinensis Randrian. &amp; Lowry is easily distinguished from its congeners by its semicraspedodromous secondary veins, its thin petiole, and its fruits densely covered with short indument.</i> <b>Description</b> <i>Trees</i> 5-12 m tall, 20-21 cm DBH, bark with white latex; tips of young twigs with short, appressed indument. <i>Leaves</i> opposite or sub-opposite; blade obovate, 2.8-5.8-(6) <b>3</b> 1-3 cm, chartaceous, apex retuse, margins entire, base broadly cuneate, adaxial surface glabrous, abaxial surface sparsely strigose on midvein, venation semicraspedodromous, midvein prominent abaxially, secondary veins 18-25 pairs, 2-3 mm apart, raised and prominent abaxially, slightly raised adaxially, tertiary veins visible only on abaxial surface; petiole 7-15 mm, c. 0.5-1 mm in diam., usually glabrous but sometimes with very sparse short, appressed indument. <i>Inflorescence</i> axillary or terminal, a panicle, 1.5-5.5 cm long, pubescent. <i>Male</i> and <i>female flowers</i> small, 4-merous, c. 2 mm long; calyx lobes 0.5 <b>3</b> 1 mm, triangular, adaxial surface glabrous, abaxial surface pubescent; corolla lobes c. 2 <b>3</b> 1-1.2 mm, ovate, adaxial surface glabrous, abaxial surface pubescent. <i>Male flowers</i> with filaments 1-1.2 mm long, pubescent or sometimes glabrous, anthers c. 0.5-0.8 mm, subglobose, glabrous; disk slightly cupuliform, c. 1.5 mm in diam., glabrous; ovary completely absent. <i>Female flowers</i> with vestigial stamens, filaments c. 1 mm long, pubescent, anthers very small, c. 0.2 mm, sterile; disk glabrous, cupuliform, c. 1.5 mm in diam.; ovary c. 0.6-0.8 <b>3</b> 1 mm, depressed ovoid, completely covered with indument; style very short, inserted apically, partly covered with indument, stigmas capitate. <i>Fruits</i> 2.3-2.5 <b>3</b> 1.2-1.4 cm, ellipsoid, densely covered with short, appressed and slightly tangled indument, with longitudinal striations. <b>Distribution, ecology and phenology</b> <i>Abrahamia delphinensis</i> occurs in low elevation humid forest, including littoral forest on sand, and is restricted to the area around Fort Dauphin (Map 2). It flowers between September and November, and fruits between October and December. <b>Conservation status</b> With an EOO of 1442 km 2, a minimum AOO of 48 km 2, and 12 known localities representing a total of 7 locations, 3 of which are situated within protected areas (Andohahela, Mandena, and Sainte Luce) while the others are variously subjected mining as well as fire and land clearing leading to a projected decline in all 5 sub-criteria, <i>A. delphinensis</i> is assigned a preliminary conservation status of “Vulnerable” [VU B1ab(i,ii,iii,iv,v)+2ab (i,ii,iii,iv,v)] using the IUCN Red List Categories and Criteria (IUCN, 2012). 52 Boissiera 71 <b>Notes</b> <i>Abrahamia delphinensis</i> most closely resembles <i>A. lenticellata</i> but can be distinguished by its retuse (vs short acuminate to acuminate) leaf apex and the complete absence (vs presence) of a rudimentary ovary in male flowers. <b>Paratypi</b> MADAGASCAR. Prov. Toliara: Andohahela PN, NW of Tolagnaro, 24°45’S 46°51’E, 250-500 m, 17-20.X.1992, fl., <i>Malcomber et al. 1678</i> (BM, CAS, G, K, MO [2 sheets], NY, P, TAN, US, WAG); N of Fort-Dauphin, near Ste. Luce, 24°47’S 47°10’E, 10 m, 21.X.1989, y. fr., <i>McPherson 14196</i> (MO, P, TAN, TEF); Mandena, botanical garden, 24°57’S 47°00’E, 25 m, 25.X.1989, fl., <i>McPherson et al. 14244</i> (MO, P, TAN, TEF); Ste. Luce, N de Mahatalaky, 0-10 m, 28.IV.1989, ster., <i>Rabevohitra 1959</i> (MO, P, TAN); Andohahela PN, Isaka-Ivondro, 24°47’S 46°50’E, 0-500 m, 10-27.IX.1993, fl., <i>Randriamampionona 631</i> (A, BM, BR, BRIT, CAS, F, G, K, MO [2 sheets], NY, P [2 sheets], PRE, S, TAN, US, W, WAG, Z); Andohahela PN, Andranolava, 24°41’S 46°45’E, 28.VIII.1996, ster., <i>Randriamampionona 1338</i> (MO, P, TAN); Mandena forestry station, 24°57’S 47°00’E, 0-10 m, 18.XI.1996, ster., <i>A. Randrianasolo 546</i> (MO, P, TAN); N of Tolagnaro, Ste. Luce area, [24°47’S 49°09’E], 0-10 m, 19.XI.1996, ster., <i>A. Randrianasolo 569</i> (MO, P, TAN); Bevoay, Androranga, [24°29’39’’S 47°05’39’’E], 171 m, 18.XI.2009, fr., <i>Razakamalala 4680</i> (G, MO, P, TAN); Ifarantsa, Ivorona, 24°29’09’’S 47°04’43’’E, 35 m, 10.XII.2010, fr., <i>Razakamalala 5033</i> (G, K, MO, P, TAN); Mandena, [24°57’S 47°00’E], 16.XI.1948, fl., <i>Réserves Naturelles 1348</i> (G, MO, P); <i>ibid. loco,</i> 18.IX.1950, <i>Service Forestier 1545</i> (P, TEF); Marofanenitra, 25.IX.1951, <i>Service Forestier 4043</i> (P, TEF); Mandena, [17°30’S 48°38’E], 29.X.1953, fl., <i>Service Forestier 7826</i> (P, TEF); <i>ibid. loco,</i> 3.IX.1953, fl., <i>Service Forestier 8170</i> (MO, P, TEF); Col du Maningotry, 300-400 m, 27.IX.1953, fl., <i>Service Forestier 8510</i> (G, MO, P, TEF); Mandena, 15.XII.1954, fr., <i>Service Forestier 15622</i> (MO, P, TEF).
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 51-52, 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."]}