Four new species and one new combination in the Malagasy endemic genus Micronychia Oliv. (Anacardiaceae) Randrianasolo, Armand Lowry Ii, Porter P. Adansonia 2009 3 2009-06-30 31 1 157 168 4325W Randrian. & Lowry Randrian. & Lowry 2009 Magnoliopsida Anacardiaceae Micronychia Plantae Sapindales 9 167 Tracheophyta species striata sp. nov.  ( Fig. 6)  Haec species quoad laminam foliarem utrinque glabram 8-15 cmlongam apice plerumque acutam usque acuminatam, in medio nerviis secundariis inter se 12 cmdistantibus adMicronychiam benono maxime accedit, sed ab ea foliis oppositis, petiolo 26 mmlongo, infructescentia 2.5-5 cmlonga atque fructu manifeste striato distinguitur.   TYPUS. —  Madagascar. Prov. Antsiranana, Andapa, Doany, Andranomilolo, forêt dense humide de moyenne altitude située au pied du sommet d’Anjanaharibe“ Nord”, 14°28’55”S, 49°32’43”E,  1098 m,  24.XI.2006, fr.,  Rakotovaoet al. 3518( holo-, MO!;  iso-, P!, TAN!).   PARATYPES. —  Madagascar. Prov. Antsiranana, massif de l’Anjanaharibe(pentes et sommet nord) à l’ouest d’Andapa(haute Andramonta, bassin de la Lokoho: Nord-Est), forêt ombrophile sur gneiss et granite, [ 14°36’S, 49°23’E],  700 m,  10.XII.1950-  3.I.1951, fr., et al. 24518 ( K, MO, NY, P[2 sheets]). — Anjanaharibe( Wdu district d’Andapa), campement 2, [ 14°36’S, 49°23’E],  880 m,  12.XII.1950, fr.,  Service Forestier(Capuron) 913( MO, P[2 sheets]). — District Andapa, Doany Anala, [ 14°28’S, 49°32’E],  24.VI.1951, fl.,  Service Forestier(Capuron) 3656( P, TEF).  DESCRIPTION Trees 8-25 mtall, dioecious; twigs glabrous. Leaves opposite, subcoriaceous, glabrous on both surfaces, 8-14 × 3.6-5.8 cm, obovate, base cuneate, apex usually shortly acuminate, rarely emarginate, midvein abaxially prominent, secondary venation camptodromous, 10 to 16 pairs, prominent, 1-2 cmfrom each other in median portion of blade, tertiary venation visible, more so abaxially. Petiole 2-6 mmlong, glabrous, shallowly canaliculate above. Staminate flowers small, c. 2 cmlong; pedicel c. 0.3-0.5 mmlong; sepals 1 × 1 mm, widely ovate, imbricate, glabrous on both surfaces; petals 2-3 × 1.5 cm, ovate, imbricate, glabrous on both surfaces; stamens 5, filaments 1 mmlong, broadened at the base, glabrous, anthers 1-1.5 mmlong, oblong, glabrous; disk dish-shaped, 1 mmin diam., glabrous; ovary very reduced. Pistillate flower not seen. Infructescence a terminal, erect panicle, glabrous, 2.5-5 cmlong; secondary axes borne at nearly 90° angles, held perpendicular to the primary axis, higher order axes zigzag in shape. Fruits drupaceous, mango-shaped, asymmetric, widely obovoid, 1.5-1.8 × 1.2-1.5 cm, markedly striate, green to dark green when fresh, yellow tan when dry.  REMARKS   Micronychia striatais known only from humid forest on granitic or gneissic substrate in the Anjanaharibe Sud Special Reserve W of Andapa and from the Anjanaharibe Nord massif near Doany ( Fig. 2). Among the species with glabrous leaves,  M. striatais distinctive in having opposite leaves and markedly striate fruits.  VERNACULAR NAME Hoditrovy.  CONSERVATION STATUS With an Extent of Occurrence < 100 km², an Area of Occupancy of 27 km², and two subpopulations, only one of which occurs within a protected area (Anjanaharibe Sud Reserve),  Micronychia striatais assigned a preliminary status of Endangered (EN B1ab(i,ii,iii)+2ab(i,ii,iii)) based on the IUCN Red List criteria ( IUCN 2001). 5067297308 2006-11-24 MO Rakotovao Madagascar 1098 -14.481944 Doany 21 49.545277 Andapa 9 166 1 Prov. Antsiranana holotype 5067297309 [434,585,1359,1383] 2006-11-24 P, TAN Rakotovao Madagascar 1098 -14.481944 Doany 21 49.545277 Andapa 9 166 1 Prov. Antsiranana isotype 5067297310 1950-12-10 1951-01-03 1950-12-10 K, MO, NY, P Humbert Madagascar 700 -14.6 l'Anjanaharibe 1287 49.383335 Andramonta 9 166 1 Prov. Antsiranana paratype 5067297307 1950-12-12 1951-01-03 1950-12-10 MO, P Service Forestier Madagascar 880 -14.6 d'Andapa 1287 49.383335 Anjanaharibe 9 166 1 Prov. Antsiranana paratype 5067297301 1951-06-24 1951-01-03 1950-12-10 P, TEF Service Forestier Madagascar 880 -14.466666 Doany Anala 1288 49.533333 District Andapa 9 166 1 Prov. Antsiranana paratype