Abrahamia turkii Randrian. & Lowry

Randrianasolo, Armand, Lowry II, Porter P. & Schatz, George E., 2017, Taxonomic treatment of Abrahamia Randrian. & Lowry, a new genus of Anacardiaceae from Madagascar, Boissiera 71, pp. 1-152: 139-141

publication ID

978-2-8277-0087-5

persistent identifier

http://treatment.plazi.org/id/038887C6-FF41-FF58-FE43-83651FB70C29

treatment provided by

Carolina

scientific name

Abrahamia turkii Randrian. & Lowry
status

spec. nova

33. Abrahamia turkii Randrian. & Lowry   , spec. nova (Fig. 31).

Typus: MADAGASCAR. Prov. Fianarantsoa: Rég. Vatovavy-Fitovinany, Ranomafana National Park, parcelle 3, S of National road 25 at 7 km W of Ranomafana , Talatakely trail system, 21°15’30’’S 47°25’00’’E, 950-1150 m, 20.X.1993, fl., Solo & J. Randrianasolo 35 (holo-: MO-6671437!; iso-: G, K, MO-6671438!, P [ P06168911]!, TAN [ TAN002002 View Materials ]!, WAG) GoogleMaps   .

Abrahamia turkii Randrian. & Lowry   can be distinguished from other members of the genus by its coriaceous leaves, inflorescence with thick axes and ferruginous indument, and fruits that are small in size (1.8-2 3 1 cm) and glabrous.

Trees 11-30 m tall, 18-100 cm DBH, bark with white latex; young twigs sericeous on tips, lenticellate farther from the tip. Leaves usually alternate, sometimes subopposite; blade obovate, 2.5-8 3 1.5-3.5 cm, coriaceous, apex usually emarginate or retuse, sometimes rounded, margin slightly revolute, sometimes undulate, base cuneate, adaxial surface sparsely pubescent, abaxial surface sericeous or strigose, venation craspedodromous, midvein prominent abaxially, secondary veins 14-24 pairs, 1-4 mm apart, raised on both surfaces, tertiary veins visible on both surfaces; petiole 0.5-1 cm long, 1-1.5 mm in diam., pubescent or scabrous, canaliculate on adaxial surface. Inflorescence axillary or terminal, a panicle, erect, axes thick, 1-5 cm long, reddish brown pubescent. Male flowers 5-merous, c. 3-4 mm long; pedicel c. 0.3-0.5 mm long, reddish brown pubescent; calyx lobes triangular, 1.5-2 3 1-2 mm, adaxial surface glabrous, abaxial surface, pubescent; corolla lobes ovate, 2-4 3 2 mm, adaxial surface glabrous, abaxial surface pubescent; stamens 5, filament 1-2 mm long, glabrous, anthers 1 mm long, ovoid to obloid, glabrous; disk slightly cupuliform, c. 2 mm in diam., glabrous; ovary very rudimentary or absent. Female flowers unknown. Fruits 1.8-2 3 1 cm, ovoid, glabrous, wrinkled when dry (longitudinal striations not as evident as in other species).

Abrahamia turkii   is distributed mainly in south-central and southern Madagascar, although one collection has been made at the Ambohitantely forest, far to the north of the other recorded subpopulations (Map 10). Flowering material has been recorded in October and November, and fruits have been collected in January.

With an EOO of 85,992 km 2, a minimum AOO of 40 km 2 but an estimated value well exceeding 2,000 km 2, and 9 localities, with subpopulations in 6 protected areas (Ambohitantely, Andohahela, Betampona, Kalambatritra, Pic d’Ivohibe, and Ranomafana), representing 9 locations, only some of which may be subjected to pressure from forest exploitation and land clearing, A. turkii   is assigned a preliminary conservation status of “Least Concern” [LC] using the IUCN Red List Categories and Criteria ( IUCN, 2012).

140 Notes

Paratypi

Abrahamia turkii   closely resembles A. ditimena   by its medium sized, coriaceous leaves with craspedodromous venation, usually emarginate or retuse apex, and tertiary venation that is visible on both surfaces, and its paniculate inflorescence, but it can easily be distinguished by its short (1-5 vs 2-10 cm) inflorescence covered with reddish brown pubescence (vs glabrescent or tomentose), and its glabrous (vs velutinous) fruits.

MADAGASCAR. Prov. Antananarivo: forêt d’Ambohitantely, 18 km NW of Ankazobe , [18°10’S 47°18’E], 1400-1646 m, 21.XI.1985, bud, Barnett et al. 533 ( MO, P, TAN). Prov. Fianarantsoa: Ivohibe RS, piste II et III, 22°29’00’’S 46°58’06’’E, 1275 m, 20.X.1997, fl., Rakotomalaza et al. 1434 ( G, MO, P, TAN); Ivohibe RS, 5.5 km SE d’Angondongodona, camp 4, 22°25’18’’S 46°53’54’’E, 1150 m, 4.XI.1997, fl., Rakotomalaza et al. 1494 ( G, K, MO, P, TAN); Haute Matsiatra, Ialatsara forest , 21°03’07’’S 47°12’42’’E, 12.X.2005, fl., Ranarivelo et al. 719 ( CAS, MO); Ranomafana PN GoogleMaps   , parcelle 3, Vatoharana trail system, 21°17’S 47°26’E, 1100-1250 m, 18.XI.1993, fl., Turk & J GoogleMaps   . Randrianasolo 585 ( G, MO, P, TAN); Andrambovato , E de Fianarantsoa, [21°31’S 47°25’E], 878-1000 m, 24. I GoogleMaps   .1955, fr., Service Forestier 11590 ( G, MO, P, TEF). Prov. Toamasina: RN1 [Betampona], s.d., fl. & y. fr., Anonymous s.n. ( G, MO, P [2 sheets]). Prov. Toliara: Betroka , Kalambatritra RS, forêt d’Analamaro , 23°28’28’’S 46°25’15’’E, 1423 m, 9. I GoogleMaps   .2004, fl., Andrianjafy et al. 601 ( MO, P, TAN); Andohahela PN   , parcelle 1, 13.5 km NW d’Eminiminy , 24°35’S 46°44’1’’E, 1200 m, 15.XI.1995, fl., Messmer et al. 105 ( G, MO) GoogleMaps   .

Description

Etymology

Vernacular names

Distribution, ecology and phenology

S

Department of Botany, Swedish Museum of Natural History

W

Naturhistorisches Museum Wien

J

University of the Witwatersrand

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

WAG

Wageningen University

MO

Missouri Botanical Garden

CAS

California Academy of Sciences

E

Royal Botanic Garden Edinburgh

I

"Alexandru Ioan Cuza" University

TEF

Centre National de la Recherche Appliquée au Developement Rural