New taxa and nomenclatural notes on the flora of the Marojejy Massif, Madagascar. II. Anacardiaceae: A new species of Campnosperma

摘要: A new species of the genus Campnosperma, previously considered to contain only a single in Madagascar, is described from Massif de Marojejy northeastern Madagascar. Campnosperma parvifolium differs C. micranteium its smaller leaves, with fewer secondary veins, and sparsely but evenly lepidote leaf undersurface. It occurs on high mountain ridges at Anjanaharibe, while found sand littoral forests. The northeast province Antsiranana, has always been great interest botanically (Humbert, 1955), recent intensive collecting yielded variety (Miller, 1998; Miller & Pipoly, 1993). Anacardiaceae perhaps dozen tropical America, Seychelles, Asia, western Pacific, consist L. March (Perrier la Bathie, 1946). are trees having leaves scales, unisexual flowers twice as many stamens petals, 2-celled drupe. Rend Capuron had reviewed herbarium material Madagascar Laboratoire Phandrogamie, Museum National d'Histoire Naturelle (P) annotated specimens, recognizing several infraspecific taxa, his results were never published. Examination presently available collections indicates that variation presented much too significant be accounted for by (Miller Randrianasolo, prep.). One population particularly distinct following species. R. ex J. S. A. sp. nov. TYPE: Antsiranana: Reserve Marojejy, along trail summit Est, below third camp, lichen forest exposed wind-swept ridges, elev. 1100-1300 m, 14?26'S, 49015'E, 10 Oct. 1988, James et al. 3529 (holotype, MO 5067322; isotypes, G, K, NY, P, TAN, TEF, US). Figure 1. Arbor parva vel frutex, 2(10-12) m alta. Folia persistentia, coriacea; lamina elliptica ad obovata (1.4-)2-6.7 cm longa, (0.9-)1.5-3.3 lata, apice retusa rotundata, basi obtusa cuneata, pagina inferiore glabra sparsim stellata, lepidota. Inflorescentiae racemosae paniculatae, (1-)3.3-6.3 longae. Flores unisexuales, gemmae 1 mm Fructus drupaceus, ellipsoideus, 7-9 longus, 5-7 latis, glabratus. Small tree or shrub tall, young twigs densely covered mixture scales stellate hairs, later glabrescent smooth somewhat waxy. persistent, coriaceous; blades elliptic obovate, long, wide, apex retuse rounded, base obtuse cuneate, sometimes briefly decurrent petiole ca. 1-2 mm, margin strongly revolute, entire, adaxial surface glabrous, waxy, lustrous, lepidote, abaxial glabrous occasionally sparse (appearing gland-dotted), not overlapping, venation brochidodromous, prominent, raised both surfaces, veins 5-9, parallel, often slightly more prominent than dense reticulum tertiary lower surface; petioles 3-8 stout, canaliculate surface, stellate-pubescent. Inflorescences borne upper axils, branched panicles racemes branches stellate, each flower subtended triangular bract 0.5-1 long. Flowers unisexual, plants functionally dioecious, reduced anthers female ovaries male flowers, small, long bud, 34 diam. when open, pedicels 0.5-1.5 diam.; sepals 4, imbricate, deltate, 0.5 lepidote; petals broadly elliptic, an occasional scale exterior 8, filaments inserted disc, flattened broader base, 0.2 long; nectariferous disc annular unevenly lobed; ovary ovoid, partially immersed anNovoN 8: 170-172. 1998. This content downloaded 207.46.13.164 Mon, 27 Jun 2016 05:35:39 UTC All use subject http://about.jstor.org/terms Volume Number 2 1998 Randrianasolo 171