Abrahamia minutifolia 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: 101-105

publication ID

978-2-8277-0087-5

persistent identifier

http://treatment.plazi.org/id/038887C6-FFAF-FFBC-FE43-83651FB70C34

treatment provided by

Carolina

scientific name

Abrahamia minutifolia Randrian. & Lowry
status

 

22. Abrahamia minutifolia Randrian. & Lowry   , spec. nova (Fig. 20-21).

Protorhus ditimena var. minutifolia H. Perrier   in Mém. Mus. Natl. Hist. Nat. 18: 261. 1944 [nom. inval.].

Typus: MADAGASCAR.Prov. Toamasina:Rég.Alaotra-Mangoro,Moramanga, Analamazaotra RS, “carrière de sable”, [18°56’S 48°26’E], 900-950 m, 29.X.1996, fl., A. Randrianasolo 516 (holo-: MO-04895273!; iso-: G!, K!, P [ P06169142]!, TAN [ TAN002000 View Materials ]!) GoogleMaps   .

Abrahamia minutifolia Randrian. & Lowry   can be distinguished by having leaves that are smaller (1-3 3 0.9-1.8 cm) than any other member of the genus and fruits that are among the smallest (1-1.5 3 0.5-0.8 cm).

Trees 3.5-12 m tall, 11.9-40 cm DBH, bark with translucid latex; young twigs waxy, lenticellate, with short, red, appressed indument at the tip. Leaves subopposite; blades, obovate, 1.8-4 3 0.9-1.8 cm, subcoriaceous to coriaceous, apex emarginate, retuse, or rounded, margin entire, base acute, adaxial surface glabrous, abaxial surface with very sparse appressed reddish indument when young, glabrescent, venation craspedodromous, midvein prominent below, secondary veins 15-20 pairs, 0.5-2 mm apart, prominent on both surfaces, tertiary veins raised on both surfaces; petiole 3-8 mm long, canaliculate on adaxial surface, reddish pubescent when young, later glabrescent. Inflorescence axillary or terminal, a thyrse, 1-3 cm long, axes somehow flattened, with ferruginous indument. Male and female flowers 4- or 5-merous; pedicel 0.2-0.3 mm long, pubescent; calyx lobes deltate, 1 3 1 mm, imbricate, glabrous, persistent on fruit; corolla lobes ovate, 2-2.2 3 1-1.5 mm, imbricate, adaxial surface glabrous, abaxial surface pubescent; stamens 4 or 5. Male flowers with filaments 1-1.5 mm long, glabrous, white, anthers c. 0.8 mm long, obloid to slightly ovoid, yellow, glabrous; disk cupuliform, c. 1 mm in diam., glabrous; ovary rudimentary. Female flowers with filaments 0.3-0.5 mm long, glabrous to slightly pubescent, white, anthers c. 0.5 mm long, subglobose to ovoid, sterile, yellow, glabrous; disk c. 1.5 mm in diam., glabrous; ovary widely to very widely ovoid, c. 1.5 3 1 mm, pubescent, placentation subapical; style shortly trifid, subapically to apically inserted, 0.5 mm long, partly pubescent, stigmas capitate. Fruits 1-1.5 3 0.5-0.8 cm, ellipsoid, slightly asymmetrical, surface velutinous, with longitudinal striations.

Abrahamia minutifolia   has been collected primarily in premontane forest along Madagascar’s eastern escarpment at an elevation of c. 900 m and in central high elevation forest at c. 1500 m, but it also occurs in humid forests in both the eastern and northwestern parts of the island (Map 7). It flowers between September and November, and fruits have been collected from November to April.

102 Conservation status

Notes

Paratypi

With an EOO of 117,262 km 2, a minimum AOO of 84 km 2, and 21 known localities, with subpopulations in at least 5 protected areas (Ambohitantely, Kalabenono, Masoala, Manongarivo, and Analamazaotra-Perinet), A. minutifolia   is assigned a preliminary conservation status of “Least Concern” [LC] using the IUCN Red List Categories and Criteria ( IUCN, 2012).

Abrahamia minutifolia   is part of a group of species, along with A. delphinensis   , A. ditimena   , A. itremoensis   , A. lenticellata   and A. sericea   , that has velutinous fruits, but is distinguished by its thyrsiform (vs paniculate) inflorescence and smaller fruits (1-1.5 3 0.5-0.8 vs 2-3-2.5 3 1.2-1.4 cm in A. delphinensis   , 2-3 3 1.4-1.6 cm in A. ditimena   , 1.5-2.3 3 1.2-1.5 cm in A. itremoensis   , 2-2.6 3 1.3-1.5 cm in A. lenticellata   and 2-3 3 0.8-1.3 cm in A. sericea   ).

The name Protorhus ditimena var. minutifolia   , published by PERRIER DE LA BâTHIE (1944) on the basis of a fragmentary specimen (Louvel 21), is invalid because it lacked a Latin diagnosis, as required for all names published between 1 January 1935 and 31 December 2011 under Article 39.1 of the International Code of Nomenclature ( MCNEILL et al., 2012). We have chosen to retain Perrier de la Bâthie’s epithet, which aptly characterizes this taxon, by formally describing it as a new species.

MADAGASCAR. Prov. Antananarivo: Ankazobe, Ambohitantely RS, 18°11’S 47°17’E, 1620 m GoogleMaps   , 14. I.1997 GoogleMaps   , fl., Randrianaivo et al. 53 ( G, K, MO, NY, P, TAN, WAG); forest E of Anjozorobe, E Antsahabe village   GoogleMaps , [18°22’S 47°47’E], 1400 m, 22.X.1996, fl., A. Randrianasolo 508 ( MO, P, TAN); Ambohitantely RS, 18°10’42’’S 47°17’00’’E, 1530 m GoogleMaps   , 23-24.XI.1993, fl., Schatz et al. 3565 ( G, K, MO, P, TAN); ibid. loco, [18°09’S 47°14’E], V GoogleMaps   .1953, fr., Service Forestier 7361 ( P, TEF); ibid. loco, [18°08’S 47°16’E], 1600 m GoogleMaps   , IV.1953, fr., Service Forestier 8417 ( P, TEF); ibid. loco GoogleMaps   , 26.VII.1954, ster., Service Forestier 11-R-282 ( P, TEF); Poste forestier Manankazo, Ankazobe , [18°09’S 47°14’E] GoogleMaps   , 22. VI.1955 GoogleMaps   , fr., Service Forestier 16814 ( P, TEF). Prov. Antsiranana: Ambanja, Bekolosy   GoogleMaps , 14°02’S 48°18’E, 1200 m, 28.III.1996, fr., Gautier & Be 2909 ( G, MO, P, TAN, TEF); ibid. loco, 14°02’S 48°18’E, 1070 m GoogleMaps   , 23.IX.1996, fl., Gautier et al. 3123 ( G, MO, P, TAN, TEF); Ambilobe , forêt de Kalabenono, 13°38’45’’S 48°40’45’’E, 934 m GoogleMaps   , 27.XI.2006, fr., Callmander et al. 631 ( G, MO); Andapa, Doany, forêt d’Andramanalana , 14°23’02’’S 49°21’36’’E, 1280 m GoogleMaps   , IV.2006, fr., Rakotovao et al. 3074 ( G, MO, P, TAN); Andramilolo , SE Anjanaharibe, 14°19’43’’S 49°18’08’’E, 1412 m GoogleMaps   , 12.XI.2006, fl., Razakamalala et al. 2939 ( G, MO, P, TAN). Prov. Fianarantsoa: Tolongoina, Andrambavato , 2 km S Tatamaly, 21°30’S 47°24’E, 1075 m GoogleMaps   , 13.X.2000, fl., Randriatafika 142 ( G, K, MO, P, TAN). Prov. Toamasina: Alaotra-Mangoro, Ambatovy , Analamay , 18°48’28’’S 48°20’10’’E, 1083 m GoogleMaps   , 2.XII.2005, fl., Antilahimena et al. 4316 ( G, MO, P, TAN); ibid. loco, fl., Antilahimena et al. 4318 ( G, MO, P, TAN); Moramanga, Ambatovy / Andranovery forest , 18°52’09’’S 48°18’15’’E, 1013 m GoogleMaps   , 26.X.2007, fl., Antilahimena 5937 ( G, MO, P, TAN); Analamazaotra   , IX.1925, bud, Louvel 21 ( P); Maroantsetra, Masoala PN, E slope of Ambohitsitondroinan’Mahalevona summit, 15°25’34’’S 49°57’22’’E, 1160 m GoogleMaps   ,

104 Fig. 21.

Abrahamia minutifolia Randrian. & Lowry.   A. Branches showing inflorescences and flower buds [Antilaimena 5937]; B. Branch with young fruits

[Callmander et al. 631].

Photos: A: P.. AntiLahimena;

B: M. CaLLmander

25.II.2003, fr., Lowry et al. 6190 ( G, K, MO, P, TAN, WAG); along road to Lakato, 18 km S of RN2, 19°04’06’’S 48°22’01’’E, 1050 m GoogleMaps   , 17.X.2004, fl., Lowry et al. 6547 ( G, MO, P, TAN); Ambatovy, Analamay, 18°49’26’’S 48°20’16’’E, 1000 m GoogleMaps   , 26. I.1997   , fr., Rakotomalaza et al. 1005 ( MO, P, TAN); Analamazaotra, 950 m, 29.X.1996, fl., A. Randrianasolo 515 ( G, MO, P, TAN); Mantadia PN, c. 11 km N of village of Andasibe, 18°49’47’’S 48°25’56’’E, 939 m GoogleMaps   , 10. I.2003 GoogleMaps   , ster., A. Randrianasolo   GoogleMaps 781 ( MO, P, TEF); Ambatovy, 18°49’28’’S 48°19’23’’E, 1134 m, 26.XI.2005, bud, Razafindraibe 135 ( MO, P, TAN); Analamazaotra-Périnet, [18°56’S 48°26’E] GoogleMaps   , 6.XI.1957, bud, Service Forestier 18400 ( G, K, MO, NY, P [2 sheets]); Ankazomanitra, PK 45, route Anosibe-Moramanga, [19°58’S 48°08’E] GoogleMaps   , 6.XI.1968, bud, Service Forestier 26800 ( G, MO, NY, P, TEF); W d’Antanandava (PK 45 Moramanga-Anosibe), [19°08’S 48°15’E] GoogleMaps   , XI.1968, fl., Service Forestier 28453 ( G, MO, P, TEF); ibid. loco GoogleMaps   , XI.1968, bud & fl., Service Forestier 28454 ( G, MO, NY, P, TEF)   .

Description

Vernacular names

Distribution, ecology and phenology

Conservation status

Notes

A

Harvard University - Arnold Arboretum

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

I

"Alexandru Ioan Cuza" University

MO

Missouri Botanical Garden

NY

William and Lynda Steere Herbarium of the New York Botanical Garden

WAG

Wageningen University

E

Royal Botanic Garden Edinburgh

V

Royal British Columbia Museum - Herbarium

TEF

Centre National de la Recherche Appliquée au Developement Rural

VI

Mykotektet, National Veterinary Institute

S

Department of Botany, Swedish Museum of Natural History

B

Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet

M

Botanische Staatssammlung München

N

Nanjing University

W

Naturhistorisches Museum Wien

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Sapindales

Family

Anacardiaceae

Genus

Abrahamia

Loc

Abrahamia minutifolia Randrian. & Lowry

Randrianasolo, Armand, Lowry II, Porter P. & Schatz, George E. 2017
2017
Loc

Protorhus ditimena var. minutifolia

H. Perrier 1944: 261
1944