A New Species of Poupartia (Anacardiaceae) from Madagascar Armand Randrianasolo and James S. Miller Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166-0299, U.S.A.ABSTRACT. Poupartia orientalis Capuron ex A.Randrianasolo & J. S. Miller is described fromMadagascar, and its distribution, habitat, and phe-nology are discussed. Poupartia orientalis is similarto P silvatica H. Perrier but is distinct in its ev-ergreen habit and subcoriaceous leaflets with fewerand less prominent tertiary veins. Poupartia Commerson is a genus presently con-sidered to comprise seven species restricted toMadagascar, the Mascarenes, and the Seychelles.Perrier de la Bathie (1946) recognized five speciesin Madagascar, but Poupartia caffra (Sonder) H.Perrier was transferred to Sclerocarya Hochstetterby Kokwaro (1986), and P gummifera Sprague, aspecies that occurs in Madagascar and SeychelleIslands, was transferred to Operculicarya H. Perrierby Capuron (1975). More recently, Friedmann(1994) accepted P gummifera in his treatment ofAnacardiaceae of the Seychelles over Operculicaryagummifera (H. Perrier) Capuron, a decision agree-ing with Eggli's (1995) revision that excluded 0.gummifera from his concept of Operculicarva.Three other species of Poupartia are endemic tothe Mascarene Islands (Friedmann, 1997), bringingto seven the total number of species in this genusprior to this publication. Latin American and Asiantaxa previously considered to belong to Poupartiahave all been transferred to other genera (Hill,1937; Metcalf, 1931; Cheng & Ming, 1980). Aforthcoming revision of Poupartia will provide ad-ditional information about P gummifera as well asa key for identifying all known species (Randriana-solo & J. S. Miller, in prep.). During preparation of a revision (of Anacardi-aceae for Madagascar, it became apparent that agroup of specimens collected in the northeasternand mid-eastern regions of the island represents anundescribed species. Although no specimens ofmale individuals were observed, study of the femaleflowers and fruits indicates that this undescribedspecies belongs to Poupartia.Poupartia orientalis Capuron ex A. Randriana-solo & J. S. Miller, sp. nov. TYPE: Madagas-car. Toamasina (Est): foret sublittorale, sur sa-bles, au Sud de Soanieran'Ivongo (P.K. 154), 27 Nov. 1962 (fl and yfr), SF 22124 Capuron (holotype, P; isotype, MO). Figure 1.NovoN 9: 546-548. 1999. Arbor uisquce ad 15-20 in alto. oltia persistcitia. alter-a:; toliolis 7 ;i 13. oppiositis vel sui1oppositis. itcr inali obovato. lateralilus inaequaliter ovatis. 3,.5-.0 ncm longis, apice acuminalis. base iniequaliter obttusis. supra ct infra glabhratis: petiolulis 3-4 rini longis. Inflorcscc ntia axillar-is. racitrosa. .-7 cmi lorga: pedicellis 1-5 t n longis. Ilores Ifctini i 5-miiri: lou)l lis (orollinis reflexis. oxalis. 2.5-3.5 Imm longis: s llis 5. Frunlts (Iruipaleus. lat ovo-idul s ad suil)gloi)l)osi . I.5-2 rii longus. 5-loe'laris. 5 oper<'ulatits. Evergreen trees, 15-20 m tall; young twigs gen-erally glabrous and with lentieels, rarely with sparse hairs at the tips of branches or branchlets. Leaves alternate, often clustered at the end of branches or branchlets. imparipinnately compound, 15-30 cm long; leaflets 7 to 13, opposite or subop-posite, subcoriaceous, lateral leaflets asymnnmetri-cally ovate and the terminal ones obovate, 3.5-9 cm long, 1.5-4 em wide, the apex long acuminate, the base unequally obtuse, sometimes very shortly decurrent, the margin entire and slightly revolute, the adaxial surface pubescent when young, almost glabrous when older except for a few hairs left on the midvein and on the margin at the leaflet base, abaxial surface pubescent when young, glabrous when mature, venation pinnate, generally brochi-dodromous but sometimes basal lateral veins reti-culodromous, the midvein prominent on the lower surface, the lateral veins arcuate, very slightly prominent on the lower surface, the tertiary veins very few, not prominent, ramified and admedial, sometimes connecting two adjacent lateral veins; petiolule of terminal leaflet 5-30 mm long; petio-lules of lateral leaflets 3-4 mm long, pubescent or glabrescent. Male inflorescence and flowers un-known. Female inflorescence axillary, racemose. 5-7 cm long, pubescent, sometimes glabrous; bracts very caducous, not observed. Flowers generally 5-merous, unisexual, small, ca. 3 mm long; pedicels 41-5 nmn long, scabrous or pubescent; calyx lobes deltate, ca. 1 mm long and ca. 1 mm wide, pubes-cent, imbricate; corolla lobes reflexed at anthesis, ovate, 2.5-3.5 mm long, ca. 2 mm wide, glabrous, yellow or pale yellow, imbricate. Staminodes in 2 whorls of 5; filaments 1-1.5 mm long (episepalous ones longer than epipetalous), straight and broad-ened at the base, inserted basally on the outer sur-face of the disc, glabrous, white; anthers ovate, ca.